5x5 matrix - rr controller - Help

Other Hardware General Electronics
1

Hi.

I'm trying to mount a 5x5 matrix pro micro with rr_controller. All the buttons work except that when pressing button 6 or button 16, I have all the column C2 on pin D3 which passes and remains in the high state. Others then works normally. I have little knowledge of electronics. If someone could help me to find the problems. Thank you again for your help.

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2

you may have a short on said 2 diodes

3

I also thought a short circuit :thinking: but I tested by shifting Pin D3 to the next column, the high state problem follows this pin D3

4

Post some highres images of your wiring please

5

All column c2 d3 don't work today🙃 pressing a button on C1 returns C2 to the high state. C1 C3 C4 C5 work normally

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6

Can you post your code, too?

Just a note on the PCB: I'd make the vias a lot wider (1mm) and add GND in between. It's a lot easier to debug then. BTW, did you check that the vias are OK?

7

I use this code : RealRobots.net / rr_controller · GitLab

First time i use vias I look at how to test

Thank for your help

8

Then it's a software problem

9

The schematic you show, does not match the the images you show.
So there could be a layout problem but there is no way of knowing.

10

I tested at the terminal of each button, all give about 27mV except those in column C2 which are at 0.

D3 stays low?

11

I connected D15 to column 2, it seems to work fine.

But, the pcb being done, I have to pull a button wire - D15.

what is D3 I2C - specific output - c note usable in digital pins?