mode switches detected on the audio thread!

great!

Fun fact: when you reported the first issue I thought you were using the latest beta release of Supercollider. I then tested it and I realised that, indeed, with that release the example you were using (and only that one) was causing mode switches. So I fixed that and amended the release. At the end it turns out that you were having an entirely different issue, caused by the configuration of the CTAG cape .... there was a lot to learn for me here!

Good that it all ended well and that now you have a more updated version of Bela AND of Supercollider, but the journey was very long and ultimately the issue you were having was all in the wiring ...

that was also good for me to learn: I realised that we should be detecting such issue and printing more informative messages. https://github.com/BelaPlatform/Bela/issues/658

@gulesz there is an issue with the version of Sc you installed that makes the DigitalIn Ugen not work properly. I fixed it in the updated version https://github.com/BelaPlatform/supercollider/releases

dear @giuliomoro I have the same Issue: mode switches detected on the audio thread!
And i download the latest version ob SUpercollidder v3.11.2-bela.dep try to run in terminal on Mac and it shows up:

should i say yes to it to continue?
Many thanks in advance.

sps should i say yes to it to continue?

Yes. That just means that it's the first time you connect to the board.

This is what happened after "yes". But the problem (mode switch detected on the audio thread) still shows up after i get back to my code:

s = Server.default;

s.options.numAnalogInChannels = 8;
s.options.numAnalogOutChannels = 8;
s.options.numDigitalChannels = 16;

s.options.blockSize = 16;
s.options.numInputBusChannels = 2;
s.options.numOutputBusChannels = 2;

s.options.postln;

s.waitForBoot({
"Server Booted".postln;

SynthDef(\pressSensorL, {arg inbus = 0, outbus = 0;
var toe, heel, signal;
toe = AnalogIn.ar(0);
heel = AnalogIn.ar(1);
signal = toe * heel;
Out.kr(outbus, signal);
}).add;

SynthDef(\pressSensorR, {arg inbus = 0, outbus = 0;
var toe, heel, signal;
toe = AnalogIn.ar(0);
heel = AnalogIn.ar(1);
signal = toe * heel;
Out.kr(outbus, signal);
}).add;

//System Specifications
~variableMappingRate = 0.01;

// create Buses
~leftBus = Bus.control(s, 1);
~rightBus = Bus.control(s, 1);

// create Variable
~leftVar = 0;
~rightVar = 0;

// Which Bus should be
l = Synth(\pressSensorL, [\outbus, ~leftBus] );
r = Synth(\pressSensorR, [\outbus, ~rightBus]);

Tdef(\VariableSwitch, {
loop{
~leftBus.get({arg value; ~leftVar = value;});
~rightBus.get({arg value; ~rightVar = value;});
~variableMappingRate.wait;
}
}).play;

SynthDef('pm', {arg freq=200, amp=0.5, pan=0, dur=1, modfreq=200, idx=0.1, modphase=0, trig=1;
var sig, env;
sig = PMOsc.ar(freq, modfreq, idx, SinOsc.ar(modfreq 3));
env = EnvGen.ar(Env.perc(0.01, 1), trig, timeScale: dur, doneAction: 2);
Out.ar(0, Pan2.ar(sig env * amp, pan));
}).add;

Tdef(\Test_The_VariableSwitch, {
~synthPm = Synth(\pm, [\out, 1]);
loop {
~synthPm.set(\freq, ~leftVar);
~synthPm.set(\dur, ~leftVar);
~synthPm.set(\amp, ~rightVar);
}});

Tdef(\Test_The_VariableSwitch).play;
})

Do you have any ideas what the problem could be?
Best,

An Error shows up:
error: cannot access archive 'Supercollider-v3.11.2-bela.debssh': No such file or directory

giuliomoro Right you have some errors in the code you ran so far ( the trailing d).

Could you point out what you mean by the trailing d?

sps it shows no such file or directory

did you download the file I linked to to your desktop? If you download it to some other location you will need to adjust the path in the command accordingly, which is why I recommend you download it to the Desktop.

yes, I am sorry for misunderstood. And no error message has printed on terminal.
Back to Bela IDE, and got a new error:

Building project ...
Build finished
Running project ...
compiling class library...
Found 726 primitives.
Compiling directory '/usr/share/SuperCollider/SCClassLibrary'
Compiling directory '/usr/share/SuperCollider/Extensions'
Compiling directory '/root/.local/share/SuperCollider/Extensions'
numentries = 676873 / 7312006 = 0.093
3961 method selectors, 1846 classes
method table size 4921220 bytes, big table size 29248024
Number of Symbols 9224
Byte Code Size 264630
compiled 227 files in 2.17 seconds
Info: 4 methods are currently overwritten by extensions. To see which, execute:
MethodOverride.printAll
compile done
localhost : setting clientID to 0.
internal : setting clientID to 0.
Class tree inited in 0.1 seconds
Welcome to SuperCollider 3.11.2. For help type ctrl-c ctrl-h (Emacs) or :SChelp (vim) or ctrl-U (sced/gedit).
a BelaServerOptions
Booting server 'localhost' on address 127.0.0.1:57110.
Server 'localhost' exited with exit code 127.
scsynth: symbol lookup error: scsynth: undefined symbol: Bela_HwConfig_new

although it does not shows any error. But i couldn't even run the SuperCollider Example Code on Bela IDE after it...
Any ideas how could i fix it?
Thanks

right, it looks like you have an incompatible version of the Bela core code installed. The safest thing to do would be to update your whole Bela core code as that will also update Supercollider.

Here are the instructions:
- download this zip archive to your desktop https://github.com/BelaPlatform/Bela/archive/refs/heads/master.zip
- run the following in the terminal:

cd ~/Desktop
unzip -q Bela-master.zip
cd ~/Desktop/Bela-master
./scripts/update_board -y

again, for each command verify that no error is printed before executing the next one.

giuliomoro thanks alot! It works out!!

Great, sorry it took a while