testamatta 011 rev2 matrix issue with keys duplicating output

[sadekbaroudi]

Hi! This is a LOVELY keyboard. I am friends with @yingeling, who introduced me to the board. I think he also requested that you make the rev2 with additional thumb keys.

I built one, and I am running into issues with specific keys. Whenever I type fast, I get duplicate keys. It mostly happens on the E and spacebar keys (I use colemak-dh). There are two pictures below, one of the whole keyboard, and one of the keys that I experience the issue with

My firmware is here: https://github.com/sadekbaroudi/qmk_firmware/tree/develop_fingerpunch/keyboards/fingerpunch/personal/testamatta

Do you have any thoughts why this would be happening?

[hide-key]

Thank you for reaching out! However, I don't think I can meet your expectations with my response.

• I only have basic knowledge (as I am neither a programmer nor an engineer).
• I personally have not assembled a Rev2 myself. I just responded to the request because there was a demand for it. Also, I don't know anyone by the name of @yingeling. It was a request from someone else.
• You've made changes to the MCU and added a trackpad, right? That's quite a departure from my original design, and I'm not knowledgeable enough to understand where the potential cause might be.

Even looking at your source, I don't understand half of it. I thought you might have more knowledge than me.

The only simple thing that comes to mind regarding your issue is, 'Could it be that the soldering or traces are short-circuited?' I can't think of anything beyond that.

The firmware I made for Rev2 was just a simple reflection of the changes to the PCB, so I can't deny the possibility of bugs. If you can't overlook that situation, I might consider withdrawing the Rev2-related sources.

[sadekbaroudi]

Hello @hide-key

Thank you so much for the quick and thoughtful response! I am more than happy to diagnose myself, but the source is not available, which makes it very time consuming. I realize and respect if that you did not open source it, and I appreciate that you did open source the gerbers. If it would be possible to (privately) share the schematics and/or layout files, it would help me diagnose the problem much more easily. I checked for shorts, and I don't have any.

If you would rather not share, I completely understand, but I thought I would ask in case it was a possibility.

You can reach out to me on discord as well! I have a discord server: https://fingerpunch.xyz/discord

My handle is @sadekbaroudi

Your designs are quite beautiful, I must say :)

[ykz89]

I have a different GitHub handle, but I am yingeling 😄

[sadekbaroudi]

I have a different GitHub handle, but I am yingeling 😄

Whoops, I tagged the wrong person 😅

[hide-key]

I have a different GitHub handle, but I am yingeling 😄

I see, I understand.