Working on prototyping. Currently using Pd on a Mac and 10 independent channels (A/D and D/A done via an audio interface). OSC messages come into Pd (currently on a com port) and are parsed out to send control messages to each channel's pitch shifting Pd object, to control said pitch shifting.
I want to eventually have 10 or 12 independent channels and am thinking that my next level prototype might use one or two (or more) Belas, since I have the Pd part working already (though I assume it would need modification to run on the Bela).
What might be the best way to get 10 to 12 channels?
Option 1: Use two separate Belas each with a Bela Audio Expander Capelet to get 8 channels at 44K per Bela... OR...
Option 2: Assuming I could live with 22k sampling (probably not ultimately, but for my next prototype), use the Bela Mux Capelet on one Bela to reach say 16 channels (and only use 10 to 12 of them)?
Do these questions even make sense (I am new to this)? Are there other options?
Thanks very much for any input or direction.

    Hi anp

    With the audio expander you can get a maximum of 6 channels at 44.1k or 10 channels at 22.05k, so if you can live with the lower sample rate you might just be able to squeeze everything onto one Bela that way. If you use the multiplexer capelet to get 16 channels, the sample rate goes down to 11.025k which may not be suitable.

    My recommendation would be to try a single Bela with an audio expander to get 10 channels at 22.05k (you actually get 2 channels at 44k and 8 at 22k) and if that works for you, get another Bela + audio expander to give you the full 12 channels at 44.1k.

    There's a detailed description of the benefits and trade-offs of the audio expander capelet here, feel free to ask more questions if anything isn't clear.

      Liam,
      Thanks very much. It seemed like trying the expander might be a good first step.
      So, a few follow up questions:
      1) Do I understand that I need three things: a BB Black plus the "Bela Cape" plus the "Audio Expander Capelet"?
      2) I have a Beaglebone Black Rev B already. Will that work or will a Rev C be necessary?
      3) Out of curiosity, are all the analog ins used by one or the other cape? If so, in case I need them, can any of the GPIOs be used for analog ins?
      4) As I mentioned, I need to send serial messages to Pd which I'll eventually have running on the system. I assume that I can communicate with the board serially via the usual TX and RX?
      Thank you.
      Alan

        anp

        1) That's correct. You also need an SD card flashed with the Bela software which you can buy from our shop or follow the instructions on our wiki to make yourself. You might also find useful a handful of audio adapter cables (also available on our shop) which allow you to connect standard 3.5mm jack plugs to the audio expander capelet.

        2) Yes that should be fine.

        3) I'm not sure I quite understand what you mean - are you talking about the BeagleBone's native ADC inputs? The Bela cape uses its own ADC rather than the BeagleBone's and is much higher quality (16 bit vs 12 bit) allowing it to be used for audio signals. It is possible to use the BBB's native analog inputs for non-audio signals but it is not directly supported by the Bela software and you will not get the hard real time low-latency performance. The BeagleBone's digital GPIOs are supported by Bela however.

        4) It is possible to use the serial tx/rx (also known as UART) with Bela, see here for an example. Getting them to work with pd would require a little work but is definitely possible.

          As for #3, I was just wondering if the cape(s) take over the analog in pins (quite a while back I was looking at a Pi and a Wolfson board, but the board took over all the pins I might have wanted to use for something else). It was just more curiosity, since my application likely won't need those inputs (sensor output readings will go to another MCU which will then, via serial, control certain Pd externals (#4).

          So, thank you again. Fanastic. I wiIl order what I need ... forthwith.

          5 days later

          Sorry to bother again. I put in my order but am now finding out that running my Pd patch may not be as easy as I thought since it relies on several externals written (not by me) for pitch-shifting. There are several instances of them, one for each of several incoming channels.

          I truly want to try out Bela, but I suppose I should know for certain that it will work for me. My first step is to try running my existing Pd patch on it. So, some more questions:

          1) Do I understand that libpd, at least, can run externals? Is there any change needed to libpd for it to be able to do so?
          2) Do I understand that Heavy will not allow me to run externals?
          3) Then ... there is a possible threading issue. This seems to speak to it a bit....
          https://lists.puredata.info/pipermail/pd-list/2016-09/116224.html

          Not that I fully understand the threading issue, but I assume that if a pitch shifter is being used on several channels and the pitch tracking needs to be able to handle one or more low frequency channels (thereby needing more time to acquire periods...) that allowing for that will impact the time for render() to loop and therefore will affect all channels? (Am I stating that concern correctly and/or are there other related concerns that will hurt my chances of succeeding with Bela?)

          Thanks,
          Alan

          1) libpd can run externals, however these need to be compiled for ARM. If the external is not distributed for ARM, then you will have it compile it yourself on the board. The source code should come with instructions on how to build it. The process should be pretty straightforward and most likely work just fine on the board, but it really depends on the specific external whether any extra steps are required. Proper documentation on how to do this on Bela is not available yet, but it has been reported working, e.g.: here. I will have to write a proper tutorial at some point.

          2) Heavy cannot run Pd externals the easy way, actually it only supports a subset of the Pd vanilla objects. HOWEVER, depending on the application, there may be ways of using source code from an external and combine it with Heavy-generated code. This would be done by customizing the default render.cpp wrapper for Heavy code. This would require getting your signal out from Heavy, process them and then loop them back in appropriately (or send messages to the heavy context). You may get some performance loss for the heavy-generated code, as you will prevent it from doing some optimizations, but how much you lose highly depends on how much you need to re-work your Pd patch in order for this to work. This approach will require messing around with the Pd patch and most importantly with the C++ code. This is not recommended for beginners.

          3) in the post you reference, I talk about an issue which is common to the design of many Pd externals, which do large block-based computations in the audio thread, leading to inconsistent CPU load across audio callbacks. This is in the spirit of "predictable performance" which permeates the design of the core Pd code and expects the code to always run "in the same way" (see the follow-up discussion to that post). This issue is customarily addressed by Pd users by increasing the internal buffering ("Delay") of Pd, which in turn increases the overall roundtrip latency of Pd.

          Not that I fully understand the threading issue, but I assume that if a pitch shifter is being used on several channels and the pitch tracking needs to be able to handle one or more low frequency channels (thereby needing more time to acquire periods...) that allowing for that will impact the time for render() to loop and therefore will affect all channels? (Am I stating that concern correctly and/or are there other related concerns that will hurt my chances of succeeding with Bela?)

          Say that you have this simple Pd patch:
          alt text

          A simple oscillator and an [fft~] object in a subpatch re-blocked to 1024: Pd will perform an FFT of size 1024 samples with no overlap. Your code will have to accumulate 1024 samples before being able to perform the FFT. So, if you have an audio callback with a block size of 16 samples, during the first 63 callbacks, you will be doing no processing, only collecting samples for the FFT and storing them into an internal buffer. On the 64th callback you will finally have all of your 1024 samples in the internal buffer and you can perform the FFT. What the [fft~] Pd object does, is it performs the FFT as soon as the internal buffer is full and sends the output immediately in the same block. So your audio callback has been sitting doing nearly nothing (only memory copies) for 63 callbacks, but in the 64th callback it will have to perform a full 1024-samples long FFT, requiring a lot of CPU time, possibly more than the $\frac{16}{44100Hz} = 362\mu s$ within which the audio callback should be done.

          So if you run this patch on Bela, you will hear glitches (as a series of evenly-spaced "clicks" superimposed to your 440Hz tone). If you increase the block size on Bela to 128 samples, then each FFT will have more time to be done ( $\frac{128}{44100Hz} = 2.9ms$) and glitches will be gone. This way you tolerate larger variations on the amount of time that you can "wait for your FFT to finish" without glitching the audio in the rest of the patch (This is similar to what happens when increasing the "Delay" (internal buffering) in Pd).
          It must be noted - however - that by doing so you are only hiding away the real problem, which is that you have spikes in the CPU usage, which will cause SOME audio callbacks to take MUCH LONGER than others, forcing you to increase overall latency to account for those cases. If the CPU load of the rest of the patch increases (e.g.: you add more [osc~]), then this problem will hit you again and again. If you can set arbitrarily large audio-callback blocksizes (i.e.: you can tolerate arbitrarily large latency), then you can be happy* with this.
          Otherwise, a possible solutions is as follows: by allowing the FFT to run in another thread, the CPU load for the FFT is spread across multiple audio callbacks, over a much longer time. This allows to keep a small block size for the rest of the patch ([osc~] in our case), and having similar (slightly worse) latency figures for the block-based part of the patch ([fft~]).
          Hope this clarifies the point.

          * CPU time is not infinite. Threading helps to maximize the throughput, by avoiding the CPU sitting idle for extended periods of time, but you will at some point hit the upper CPU limit (earlier with the non-threaded version than the threaded one, for this very reason).
          Whether your algorithm is suitable to run on Bela, also depends on how much CPU it actually requires. No easy way to answer this question without knowing more about your processing chain (and still the best way of testing this is running it).

          I should reinforce the point that the issue with threaded/non-threaded behaviour of externals is NOT an issue with Bela, but it is inherent in the way the source code for the externals is written. Yet, if you want to achievelow latency, then the customary solution of increasing latency to compensate for these issues is not be a viable option.

          Also, let me reinstate that there is nothing Bela (or any platform, for what matters) can do against the inherent latency of a DSP algorithm:
          if a block-based external uses internal blocks of 4096 samples, the output from that external will always be (AT LEAST) 4096 samples late, with or without threading. The reason for threading is to allow the REST OF THE PATCH to run at a lower latency.
          Now, whether your external is affected by a similar issue or not really depends on the particular implementation in use.
          If it is affected and you cannot tolerate arbitrarily large blocksizes (i.e.: arbitrarily large latency), then you will need to re-arrange the code of your external so that it uses threads. This is not necessarily an easy task.

          My answers to questions you asked previously:

          • old3) the BBB's analogs are available (see Liam's recommendations): according to the documentation they cannot be used for anything else than analog input and are currently unused by Bela.

          • old4) serial is definitely possible on Bela. I am not sure Pd vanilla comes with any object that supports serial tx/rx on Linux. If it does, or if there is an external available, then it is to be checked whether it is affected by the same design flaws that affect [netsend] and [netreceive] (see here). I can deal with this if needed.

          a month later

          My Bela cape and Audio Expander unit arrived a couple of days ago along with an SD card.
          I checked the SD on my MacBook Pro and it looks fine, however, when I put it in the SD slot on the BBB (with or without the Bela cape attached) and power up the BBB, I see the LEDs go on (without the SD, they blink in ways that seem correct according to documentation I've read; and with the SD, the first three LEDs all stay on without blinking). However, I cannot connect to the BBB, via ssh or a browser to 192.168.7.2.
          This is likely a newbie question, but perhaps you might have a suggestion?
          Thanks.

          Thanks.
          I'm afraid there must be some other cause. I reflashed the SD card and I get the same three solid LEDs when trying to boot from it. Perhaps the BBB itself is not working properly since I also have trouble connecting even without the SD.
          Just another question: I believe I've waited long enough (several minutes) but how long should it take from power on to connectivity?
          Perhaps I should invest in a new BBB Rev C (I still have a Rev B ... and maybe now it is dead-ish. Until a couple of days ago, I had not used in it for a couple of years.

          It should take less than 30 seconds to have the IDE or ssh access.
          If you cannot connect even without SD, then - assuming you left the BBB in a working state - it may be the culprit, indeed, though that may be due to the fact that you may have updated your OS in the meantime and so connectivity has become a bit more tedious from Sierra - onwards (i.e.: you'll need new drivers, see here.

          Yet, the fact that it shows like it is booting from the embedded memory makes me think that it may be something wrong with the SD card (though the fact that it shows up on your computer should make me think it works fine 🙁 ).
          Anyhow, before getting a replacement BBB, I would try either flashing another SD card (if you have one with 4GB or more laying around), or - alternatively - try to read the data from the SD card and make sure these are not corrupted.
          I have no idea how SD cards deteriorate, but if there is an equivalent of hard disk's "bad sectors", then it may well be that it shows up on the host, but the card is defective and needs replacement.

          I purchased a new microSD, flashed it, and tried it. Same three solid LEDs. No connection via ssh, ping or http to 192.168.7.2. Booting without an SD. The LEDs flash in a likely proper way, but still no connection.

          I'm officially giving up and have purchased a new BBB Rev C on the assumption (though I think it unlikely) that the current BBB (Rev B) is defective itself. I hope I'm right. I'll keep you posted.

          As always, thank you.

          Well, I have news. I purchased a new BBB (Rev C) on the off chance that my old BBB was somehow not intact. My new BBB booted up nicely. ssh connection, http connection, even got to the IDE on port 3000.
          Then I put in the Micro SD that came with my Bela and rebooted. Never connected.
          I took the Micro SD out and now, again, no connecting....
          I am at a loss.

          Hmm
          Does it boot with the Bela SD card or does it get stuck with the leds solid on?

          If it boots, wait about thirty seconds and then look at the network devices on your computer. On mac try ifconfig at the terminal and send over the output of the command. Also, run sudo dmesg immediately after you connect the board and send us the output.

          What version of MacOS X are you on? Did you install the horndis drivers? What version?

          Long message, because of the output of the commands....

          Mac OS: Yosemite 10.10.5
          Drivers are from page, as of last night: http://beagleboard.org/getting-started
          EnergiaFTDIDrivers2.2.18.pkg
          HoRNDIS.pkg
          (on that web page, the version of HoRNDIS is not given, but checking http://joshuawise.com/horndis, and running MD5, I see that the version of HoRNDIS I installed on Feb 2 was rel8 (with support for OSX 10.11); the HoRNDISrel8 on the Bela SD is rel7 which I just installed this morning.

          First, booting without SD card:
          lights flash
          BEAGLEBONE shows up on Desktop, which I can open up in Mac Finder and access files such as:file:///Volumes/BEAGLEBONE/START.htm
          I cannot ping 192.168.7.2 nor ssh root@192.168.7.2

          ifconfig gives:

          $ ifconfig
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
	options=3<RXCSUM,TXCSUM>
	inet6 ::1 prefixlen 128
	inet 127.0.0.1 netmask 0xff000000
	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
	nd6 options=1<PERFORMNUD>
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	ether 28:cf:e9:66:07:35
	inet6 fe80::2acf:e9ff:fe66:735%en1 prefixlen 64 scopeid 0x4
	inet 10.0.0.183 netmask 0xffffff00 broadcast 10.0.0.255
	inet6 2601:401:2:f6b2:2acf:e9ff:fe66:735 prefixlen 64 autoconf
	inet6 2601:401:2:f6b2:6500:a99f:fad1:a20a prefixlen 64 autoconf temporary
	inet6 2601:401:2:f6b2::2c76 prefixlen 64 dynamic
	nd6 options=1<PERFORMNUD>
	media: autoselect
	status: active
fw0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 4078
	lladdr 44:fb:42:ff:fe:3c:4b:48
	nd6 options=1<PERFORMNUD>
	media: autoselect <full-duplex>
	status: inactive
en2: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
	options=60<TSO4,TSO6>
	ether d2:00:13:c4:b4:80
	media: autoselect <full-duplex>
	status: inactive
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	options=10b<RXCSUM,TXCSUM,VLAN_HWTAGGING,AV>
	ether 10:dd:b1:c8:f9:48
	nd6 options=1<PERFORMNUD>
	media: autoselect (none)
	status: inactive
p2p0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 2304
	ether 0a:cf:e9:66:07:35
	media: autoselect
	status: inactive
awdl0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1452
	ether 1e:c4:7c:ba:34:18
	inet6 fe80::1cc4:7cff:feba:3418%awdl0 prefixlen 64 scopeid 0x9
	nd6 options=1<PERFORMNUD>
	media: autoselect
	status: active
bridge0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	options=63<RXCSUM,TXCSUM,TSO4,TSO6>
	ether 2a:cf:e9:66:45:00
	Configuration:
		id 0:0:0:0:0:0 priority 0 hellotime 0 fwddelay 0
		maxage 0 holdcnt 0 proto stp maxaddr 100 timeout 1200
		root id 0:0:0:0:0:0 priority 0 ifcost 0 port 0
		ipfilter disabled flags 0x2
	member: en2 flags=3<LEARNING,DISCOVER>
	        ifmaxaddr 0 port 6 priority 0 path cost 0
	nd6 options=1<PERFORMNUD>
	media: <unknown type>
	status: inactive
utun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1380
	inet6 fe80::d16e:aaee:1800:eb5%utun0 prefixlen 64 scopeid 0xc
	inet6 fd86:26f8:c235:c5a0:d16e:aaee:1800:eb5 prefixlen 64
	nd6 options=1<PERFORMNUD>
en3: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1486
	ether b0:d5:cc:fd:26:20
	inet6 fe80::b2d5:ccff:fefd:2620%en3 prefixlen 64 scopeid 0xa
	inet 192.168.7.1 netmask 0xfffffffc broadcast 192.168.7.3
	nd6 options=1<PERFORMNUD>
	media: autoselect
	status: active

          Booting with SD card:
          lights flash
          BELABOOT shows up on Desktop, which I can open up in Mac Finder; opening START.htm takes me to 192.168.7.2 ... successfully
          This already better than last night when I tried. However, I still cannot ping 192.168.7.2 nor ssh root@192.168.7.2

          ifconfig gives:

          $ ifconfig
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
	options=3<RXCSUM,TXCSUM>
	inet6 ::1 prefixlen 128
	inet 127.0.0.1 netmask 0xff000000
	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
	nd6 options=1<PERFORMNUD>
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	ether 28:cf:e9:66:07:35
	inet6 fe80::2acf:e9ff:fe66:735%en1 prefixlen 64 scopeid 0x4
	inet 10.0.0.183 netmask 0xffffff00 broadcast 10.0.0.255
	inet6 2601:401:2:f6b2:2acf:e9ff:fe66:735 prefixlen 64 autoconf
	inet6 2601:401:2:f6b2:6500:a99f:fad1:a20a prefixlen 64 autoconf temporary
	inet6 2601:401:2:f6b2::2c76 prefixlen 64 dynamic
	nd6 options=1<PERFORMNUD>
	media: autoselect
	status: active
fw0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 4078
	lladdr 44:fb:42:ff:fe:3c:4b:48
	nd6 options=1<PERFORMNUD>
	media: autoselect <full-duplex>
	status: inactive
en2: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
	options=60<TSO4,TSO6>
	ether d2:00:13:c4:b4:80
	media: autoselect <full-duplex>
	status: inactive
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	options=10b<RXCSUM,TXCSUM,VLAN_HWTAGGING,AV>
	ether 10:dd:b1:c8:f9:48
	nd6 options=1<PERFORMNUD>
	media: autoselect (none)
	status: inactive
p2p0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 2304
	ether 0a:cf:e9:66:07:35
	media: autoselect
	status: inactive
awdl0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1452
	ether 1e:c4:7c:ba:34:18
	inet6 fe80::1cc4:7cff:feba:3418%awdl0 prefixlen 64 scopeid 0x9
	nd6 options=1<PERFORMNUD>
	media: autoselect
	status: active
bridge0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	options=63<RXCSUM,TXCSUM,TSO4,TSO6>
	ether 2a:cf:e9:66:45:00
	Configuration:
		id 0:0:0:0:0:0 priority 0 hellotime 0 fwddelay 0
		maxage 0 holdcnt 0 proto stp maxaddr 100 timeout 1200
		root id 0:0:0:0:0:0 priority 0 ifcost 0 port 0
		ipfilter disabled flags 0x2
	member: en2 flags=3<LEARNING,DISCOVER>
	        ifmaxaddr 0 port 6 priority 0 path cost 0
	nd6 options=1<PERFORMNUD>
	media: <unknown type>
	status: inactive
utun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1380
	inet6 fe80::d16e:aaee:1800:eb5%utun0 prefixlen 64 scopeid 0xc
	inet6 fd86:26f8:c235:c5a0:d16e:aaee:1800:eb5 prefixlen 64
	nd6 options=1<PERFORMNUD>
en3: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1486
	ether b0:d5:cc:fd:26:20
	inet6 fe80::b2d5:ccff:fefd:2620%en3 prefixlen 64 scopeid 0xa
	inet 192.168.7.1 netmask 0xfffffffc broadcast 192.168.7.3
	nd6 options=1<PERFORMNUD>
	media: autoselect
	status: active

          It seems like a driver problem, does it not? since though I see BEAGLEBONE and BELABOOT on my Desktop and can access the files via the Finder, but cannot ssh to the BBB.
          On the other hand, when I first plugged in the new BBB, before booting from the SD, I just booted without it, and all was well.

          Okay, for the "sudo dmesg", immediately after plugging in the board (with the SD card) now, running sudo dmesg

          $ sudo dmesg
Password:
.path2 /System/Library/CryptoTokenKit/com.apple.ifdreader.slotd/Contents/MacOS/com.apple.ifdreader]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/ntpd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/usbd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/nehelper]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/nsurlsessiond]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/networkd_privileged]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/networkd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/awacsd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/findmydeviced]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/secinitd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/Frameworks/CryptoTokenKit.framework/ctkd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/Frameworks/PCSC.framework/Versions/A/XPCServices/com.apple.ctkpcscd.xpc/Contents/MacOS/com.apple.ctkpcscd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonCore.framework/Versions/A/Support/coreservicesd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/Frameworks/Security.framework/Versions/A/XPCServices/authd.xpc/Contents/MacOS/authd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/cfprefsd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/diagnosticd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/distnoted]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/notifyd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/taskgated]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/amfid]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/hidd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/KernelEventAgent]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/logind]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/PrivateFrameworks/GenerationalStorage.framework/Versions/A/Support/revisiond]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/stackshot]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/mDNSResponder]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/PrivateFrameworks/Heimdal.framework/Helpers/kdc]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/autofsd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/blued]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/locationd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/securityd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/Resources/usbmuxd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/launchservicesd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/PrivateFrameworks/ApplePushService.framework/apsd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/wirelessproxd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/opendirectoryd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/PrivateFrameworks/WirelessDiagnostics.framework/Support/awdd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/backupd.bundle/Contents/Resources/mtmfs]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/wdhelper]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/backupd.bundle/Contents/Resources/backupd-helper]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/coreduetd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/diskarbitrationd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/iconservicesagent]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/iconservicesd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Metadata.framework/Versions/A/Support/mds]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/warmd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/airportd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /Applications/TeamViewer.app/Contents/MacOS/TeamViewer_Service]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/powerd.bundle/powerd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/Extensions/Line6Audio.kext/Contents/Resources/L6KSettingMgr]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/appleeventsd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/configd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/backupd.bundle/Contents/Resources/mtmd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/thermald]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /opt/cisco/anyconnect/bin/vpnagentd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/FSEvents.framework/Versions/A/Support/fseventsd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/kextd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/syslogd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/UserEventAgent]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /sbin/launchd]
$

          Sorry, could you do the sudo dmesg should be done about 30 seconds after you plug in the board? That's when the drivers kick in.
          Anyhow, this part of ifconfig's output with the board plugged in seems to show that the board is up and alive and connected, so the drivers have done their job properly.

          en3: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1486
ether b0:d5:cc:fd:26:20
inet6 fe80::b2d5:ccff:fefd:2620%en3 prefixlen 64 scopeid 0xa
inet 192.168.7.1 netmask 0xfffffffc broadcast 192.168.7.3
nd6 options=1<PERFORMNUD>
media: autoselect
status: active

          what error do you get when you do

          ssh root@192.168.7.2

          ?

          The output of sudo dmesg (after about 30 or 40 seconds) is below
          Before whenever I entered ssh root@192.168.7.2, I would get nothing. Nothing would come back. And ping would return no packets. However....

          ... now when I tried. I was able to ssh. I have no idea why now is better than before. I know that I waited many, many minutes before trying ssh or ping, during several tries. I hope all is well now, but all I can say is that it must be intermittent or I am crazy. Intermittent true. Crazy, I'm giving 50 - 50%.
          I'll keep you posted as to whetehr things get worse or stay happy.
          Of course thanks for all your help through this.

          In any case, after 30 or 40 seconds, sudo dmesg gives:

          .path2 /System/Library/CryptoTokenKit/com.apple.ifdreader.slotd/Contents/MacOS/com.apple.ifdreader]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/ntpd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/usbd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/nehelper]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/nsurlsessiond]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/networkd_privileged]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/networkd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/awacsd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/findmydeviced]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/secinitd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/Frameworks/CryptoTokenKit.framework/ctkd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/Frameworks/PCSC.framework/Versions/A/XPCServices/com.apple.ctkpcscd.xpc/Contents/MacOS/com.apple.ctkpcscd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonCore.framework/Versions/A/Support/coreservicesd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/Frameworks/Security.framework/Versions/A/XPCServices/authd.xpc/Contents/MacOS/authd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/cfprefsd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/diagnosticd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/distnoted]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/notifyd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/taskgated]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/amfid]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/hidd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/KernelEventAgent]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/logind]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/PrivateFrameworks/GenerationalStorage.framework/Versions/A/Support/revisiond]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/stackshot]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/mDNSResponder]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/PrivateFrameworks/Heimdal.framework/Helpers/kdc]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/autofsd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/blued]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/locationd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/securityd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/Resources/usbmuxd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/launchservicesd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/PrivateFrameworks/ApplePushService.framework/apsd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/wirelessproxd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/opendirectoryd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/PrivateFrameworks/WirelessDiagnostics.framework/Support/awdd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/backupd.bundle/Contents/Resources/mtmfs]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/wdhelper]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/backupd.bundle/Contents/Resources/backupd-helper]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/coreduetd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/diskarbitrationd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/iconservicesagent]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/iconservicesd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Metadata.framework/Versions/A/Support/mds]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/warmd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/airportd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /Applications/TeamViewer.app/Contents/MacOS/TeamViewer_Service]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/powerd.bundle/powerd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/Extensions/Line6Audio.kext/Contents/Resources/L6KSettingMgr]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/appleeventsd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/configd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/CoreServices/backupd.bundle/Contents/Resources/mtmd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/thermald]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /opt/cisco/anyconnect/bin/vpnagentd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/FSEvents.framework/Versions/A/Support/fseventsd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/kextd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/sbin/syslogd]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /usr/libexec/UserEventAgent]
         0 [Level 7] [Facility com.apple.sandbox.telemetry] [com.apple.sandbox.event com.apple.sandbox.event.get-task] [com.apple.sandbox.path /Library/Application Support/iStat local/iStatLocalDaemon] [com.apple.sandbox.path2 /sbin/launchd]

          That's interesting. An obvious thing would be to replace the USB cable (which you probably will have done a few times already): a bad cable could give power to the board but not actually be transmitting / receiving data.
          Also, if you have another computer at hand, it may be useful to try to run the board on that, I am sure it will just work fine.

          I start to think it may have something to do with your particular software configuration. For instance you have iStat installed on your system. I am not familiar with this piece of software, but it seems that it provides stats of your computer, including network usage. Surely it does pollute your dmesg: what I expect to see there, as the board comes alive, is something like this

          HoRNDIS: init: HoRNDIS tethering driver for Mac OS X, by Joshua Wise
HoRNDIS: rndisInit: their MTU 1486
HoRNDIS: setMaxTransferUnit: Excuse me, but I said you could have an MTU of 1486, and you just tried to set an MTU of 1500.  Good try, buddy.
HoRNDIS: init: starting up with MTU 1486
en58: attached with 4 suspended link-layer multicast membership(s)
HoRNDIS: init: HoRNDIS tethering driver for Mac OS X, by Joshua Wise

          but I see no mention of HoRNDIS at all in your posts, perhaps it is pushed back in the log by the fact that iStat seems to be logging lots of crap?

          Anyhow, can you think of any program installed on your computer that would cause troubles with network interfaces? Perhaps try by disabling iStat ( or look up what stats it provides about your "networks").

          Again, earlier you reported that ifconfig produces the right output, so it sounds like the drivers are alright, the network is alright, but something is preventing you from using it.