LED 16x32 Matrix Not Lighting Every Other 4 Rows

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aalleee
 
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LED 16x32 Matrix Not Lighting Every Other 4 Rows

Post by aalleee »

I have recently been playing around with the 16x32 matrix and Raspberry Pi 4 I bought a in Mid-November (order number 2712078-5432574543). I found that the every other group of 4 rows on the matrix never lights up (as can be seen in picture).

I rewired multiple times (wiring shown as best could in other picture) and ran different code, but those rows have never light up. Is there specific wiring that is not working that I messed up, or could the board itself be broken/not working?

I mostly used and based everything off of this tutorial/guide: https://github.com/hzeller/rpi-rgb-led- ... /wiring.md
And used his demo code.

Thanks so much,
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adafruit_support_carter
 
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Re: LED 16x32 Matrix Not Lighting Every Other 4 Rows

Post by adafruit_support_carter »

Jumper wire connections are not recommended or supported:
https://learn.adafruit.com/32x16-32x32- ... mper-wires

It's best to use one of these:
https://www.adafruit.com/product/3211
https://www.adafruit.com/product/2345

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