You will need to solder the Flexi PCB to the Teensy and to one of the Trellis boards.

There are photos here:

I haven’t actually tried this yet, myself (though I have the necessary parts), so can’t give any tips on how to do it.

My instinct would be to stick something like a TH resistor leg off-cut through the holes in the flexi board and the Teensy, solder that on both sides, and trim off the excess.

Maybe someone else would like to chip in with their experience of what works best, in practice.

@toneburst and @autodafe I made a video: https://www.youtube.com/watch?v=YoBqVYyrPnM

TH resistor leg or header pin works well. Just be careful not to cut the flexi board when you trim.

Attaching the flexi to the main neotrellis pcb - maybe tape the flexi in place and then do a little drag soldering for the contacts between boards. Be careful not to over work the soldering.

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OK, thanks for the video, really useful.
So, basically I need to solder these solder pads only, right?

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Very useful, @okyeron!

20 characters of correct!

(I taped over those extra pads that ended up not being used in this board revision)

Thanks for the video and explanation. I got it !!!

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Hello there!
Sorry in advance for the newbie question but I have some issues with my Neotrellis Grid.
I’ve bought it pre builded and in perfect working conditions.
Today I’ve tried to exchange the firmware with the “color palette” one and probably I do not managed well the operation.
Arduino report this error:

“sketch_jun30c:1:32: fatal error: MonomeSerialDevice.h: No such file or directory
compilation terminated.
exit status 1
MonomeSerialDevice.h: No such file or directory”

I’ve just downloaded Serialsosc and Libnome folders and they are placed in Documents.
Any suggestions??

EDIT: Multitrellis test works fine but when I try to flash the firmware, compares the usual error

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solved: I do not remember to remove “-master” from the name of Teensy folder.
Now works the @okyeron firmware and also the @Gerald_Stevens rgb selector.
I have some issues with this late one due my boards address is non standard, I tried with replacing original address with mine in the script but no way.
Suggestions?
Thanks

Where are we in terms of getting this to work with Teletype, factory-made Norns and other Monome products?

Factory norns should work, but would need software tweaks (same as shield)

Teletype/Trilogy modules - we are nowhere. It requires writing a chunk of C code to extend libavr32 to recognize CDC devices. I started on this once, but don’t have the skills/knowledge to complete it.

Thanks for the info. I thought I read something about someone using an external USB interface board to increase compatibility, but can’t find that now…

@forestcaver was working on that

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Cool, thanks! I’ll give him a shout.

Yeah - started a new job and time has been a bit more limited. I wanted to finish off some analog eurorack projects first… but I spent a couple of hours on it a few weeks ago - got the board flashed and it’s recognised as a monome grid with a teensy 3.2 attached - just need to sort out some issues but it seems reasonably close…

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Cool @forestcaver. Do you happen to have the part # for the USB board?

Further up thread (~post 399)

Newcomer here… I’m planning to put one of these together soon. Is there a source for the flexi-pcb? Or design files to get some made up? I can’t find them on the github or in the denki-oto store, not sure where else to look.

Thanks in advance for any clues!

I only had a few of the flexible pcbs from the initial batch and those are sold. I’m making a new order in the next couple days - which means a couple weeks before I can get them in hand. DM me and I can put you on a notification list.

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Thanks for that fast reply.

I don’t think I am able to DM you, perhaps because I’m new here, or maybe because I’m too stupid to figure it out. I’ll keep clicking things until I work it out.

Edit: clicking around the forum was enough to get messaging powers. DM sent. Thanks.

All cased up. 3D printed, sanded and painted black.

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