deskthority

Hi!

I'm having major problems with the left side of my newly built quefrency keyboard and I do not know how to troubleshoot the problem.
Col5 is totally dead (4, r, f, c, space).
It would be awesome if someone with experience could point me in the right direction.

Is it possible to handwire the broken col and how should I do that?

I don't know if its much of help, but here is an pic of the build.


And here's the schematics that I do not understand how to translate to the PCB, what is up, what is down, what is what on the pro-micro?

https://github.com/keebio/keebio-docs/b ... ematic.pdf

If someone knows how to rewire the column it would be freaking awesome, i've spent days trying to fix this.

The Pro Micro's pinout in the schematic happens to be the pinout in real life ... except that it is mounted upside-down from this angle. Col5 is on PB3. It is the third pin from the left on the top row in the picture.
Do first use a multimeter to check continuity between that pin on your Pro Micro clone and a switch pin on the column. (And if you don't have a multimeter, get one! There are cheap ones at Clas Ohlson)

Your Pro Micro clone does have several scratches, including one across the trace between the pin and PB3 on the chip. Maybe that trace has been cut.

Findecanor wrote: 13 Mar 2020, 01:36 The Pro Micro's pinout in the schematic happens to be the pinout in real life ... except that it is mounted upside-down from this angle. Col5 is on PB3. It is the third pin from the left on the top row in the picture.
Do first use a multimeter to check continuity between that pin on your Pro Micro clone and a switch pin on the column. (And if you don't have a multimeter, get one! There are cheap ones at Clas Ohlson)

Your Pro Micro clone does have several scratches, including one across the trace between the pin and PB3 on the chip. Maybe that trace has been cut.

Thanks for the response Findecanor!

So I've done as you said, I've measured each individual switch against PB3 and they seem to register when I press them (I get around 1.5 when activated).

Then I thought it was clear that the col works, but it doesn't. So I did some wiring to bypass the broken traces, but it still doesn't work.

Did I do it wrong?

Alright, so I got it working. Seems like the pinout on the pro micro is broken.
I searched for one that is not in use/that I do not need and found out that PB5 is not needed.

Did some changes in config.h and swapped B3 with B5 and then rewired col5 to PB5 and now it works!
However it seems like the TRSS cable uses PB3 to communicate with the slave board (right side) so I cannot use both parts trought the TRSS cable.
This is solved by using one USB cable for each of the halves.

This is what it looks like now: