Messages are not displayed on Adafruit matrix 16x32

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ChristianF
 
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Joined: Sun May 01, 2022 9:36 pm

Messages are not displayed on Adafruit matrix 16x32

Post by ChristianF »

I haven´t could display messages on my Adafruit 16x32 matrix and I don't know if this problem is due to the connections with the Raspberry Pi Zero W, to configurations or running commands.

I did the connections with my Raspberry Pi Zero W based on the next map:

https://learn.adafruit.com/32x16-32x32- ... new-wiring
https://learn.adafruit.com/connecting-a ... he-display

I connected the pin NC to GND but I don't know if It should be free and If the pin LAT should be connected on same way than pin LAT.

After that, I ran the next command on Raspberry Pi:

sudo ./demo -D --led-rows=16 --led-cols=32 1 runtext.ppm

Apparently, the command is ran succesfully but the matrix do not display any message.

I appreciate you help me to identify the fault or the correct steps to activate messages on my led matrix.
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adafruit_support_carter
 
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Joined: Tue Nov 29, 2016 2:45 pm

Re: Messages are not displayed on Adafruit matrix 16x32

Post by adafruit_support_carter »

Are the header pins on the Pi Zero W soldered on well?

Wiring RGB matrices pin-to-pin is very error prone. Can easily miss wire pin(s) and/or possibly be on wrong pin(s). It is highly recommended to use either a RGB Matrix Bonnet:
https://www.adafruit.com/product/3211
or HAT:
https://www.adafruit.com/product/2345

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ChristianF
 
Posts: 6
Joined: Sun May 01, 2022 9:36 pm

Re: Messages are not displayed on Adafruit matrix 16x32

Post by ChristianF »

Meanwhile I get the matrix bonnet or Hat, I would like test the matrix wiring pin-to-pin but I need to know if is correct connecting the pin NC to GND or It should be free and If the pin STB should be connected on same way than pin LAT. The question is due to I see diferent these pins between my matrix and the pinout like It's seen here:

https://learn.adafruit.com/32x16-32x32- ... new-wiring

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