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Multiple Neotrellis 4x4 Boards Not Working
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Please be positive and constructive with your questions and comments.

Multiple Neotrellis 4x4 Boards Not Working

by anaclast on Thu Jul 22, 2021 1:01 am

Hey folks,

Of the 12 boards I ordered, three are not lighting up. Continuity between Teensy and the boards is good, and the nine other boards work as expected plugged in to the same testing rig. A fourth board has a visibly damaged component that means it's not registering keypresses under one LED. Any suggestions for getting these boards talking?

Troublesome boards next to a normal board (top left):
2_boards_that_failed_testing_lowq.jpg
2_boards_that_failed_testing_lowq.jpg (189.15 KiB) Viewed 29 times


Board with damaged component:
1_damaged_component.jpg
1_damaged_component.jpg (201.1 KiB) Viewed 26 times


Working board on same testing rig:
Screen Shot 2021-07-21 at 11.53.50 PM.png
Screen Shot 2021-07-21 at 11.53.50 PM.png (874.26 KiB) Viewed 29 times


Thanks for taking a look!

anaclast
 
Posts: 3
Joined: Thu Jul 22, 2021 12:51 am

Re: Multiple Neotrellis 4x4 Boards Not Working

by dastels on Thu Jul 22, 2021 12:29 pm

The 3 in question... do they do anything when connected by themselves to the controller?

Dave

dastels
 
Posts: 6804
Joined: Tue Oct 20, 2015 3:22 pm

Re: Multiple Neotrellis 4x4 Boards Not Working

by anaclast on Thu Jul 22, 2021 12:33 pm

Not that I can tell. No lights, no response to a key press with the elastomer attached.

anaclast
 
Posts: 3
Joined: Thu Jul 22, 2021 12:51 am

Re: Multiple Neotrellis 4x4 Boards Not Working

by dastels on Thu Jul 22, 2021 1:36 pm

They do sound DOA. And the 4th is a clear manufacturing glitch.

Please email support@adafruit.com with a link to this thread, your order number, and request the replacement of 4 NeoTrellis 4x4 PCBs.

Dave

dastels
 
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Re: Multiple Neotrellis 4x4 Boards Not Working

by anaclast on Thu Jul 22, 2021 2:17 pm

Thanks, Dave!

anaclast
 
Posts: 3
Joined: Thu Jul 22, 2021 12:51 am

Please be positive and constructive with your questions and comments.