• TrillSolved

  • Bela mini Multichannel expander + Trill Craft not working

Hello,
I'm trying to work on a project using the Bela Mini + multichannel expander and the Trill craft as the title says. My first goal was to understand a little how the Trill works, however I encounter errors by just trying to run the provided 'craft-audio' example. It seems to me that the Bela is not recognising at all the Craft, but I attach a screenshot from my browser with the console output I got by just opening the demo and loading it.

I also attach a picture showing how I connected the two boards, but I followed the instructions on the site and everything seems good to me.

I'm quite new to Bela so any help would be much appreciated.

Thanks!

PS: I already tried to solve the issue on my own, but the only resource I found dealing with a similar problem—this post started by thecatsalami (https://forum.bela.io/d/2185-unable-to-identify-device)—seems at the same time quite different from my situation: as far as I know the user's Trill is at least recognised. I however tried changing the address of the Trill as suggested—tried all the possible ones listed with no luck
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I only see one picture, so I can't judge the wiring. Try running i2cdetect -y -r 1 in the console at the bottom of the IDE and report its output. If you are on the correct pins, one non -- value should appear there at 30 (taken to mean 0x30, i.e.: 48). Also try running the Trill/detect-all-devices/ example and see if the device gets detected.

Hi @giuliomoro thanks for your answer. Apologies for the missing picture of the wires, it seems I had some problems uploading it—retrying now. I'uploading a screen of the output returned by launching the console command you suggested. Judging by what you explained, there's a problem somewhere as no values different from '--' appear.
I'm also uploading a screen of the output I received when launching the detect-all-devices sketch—there, it seems to acknowledge the presence of the Trill

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Neither i2cdetect nor the program found any trace of trills.

Are the wires soldered to the Craft? If not, I wouldn't expect this to work.

The hint about the soldered wires solved the issue. I was expecting the connections to work since the inside of the holes is covered in metal or whatever material it is, but apparently the wires fit too loosely for a properly functioning connection. Soldering the pins provided in the package solved the issue.
Thanks and sorry for that..

The only way unsoldered wires can work in this setup is if you are actively pushing the device at a non-right angle with the pins, so that you force the pin and pad's plating to touch.