Middle row (a,s,d,f,...) causes whole column to trigger

mattdibi / redox-keyboard

Ergonomic split mechanical keyboard

MIT License

1.78k stars 167 forks source link

Middle row (a,s,d,f,...) causes whole column to trigger #8

Closed tstumm closed 5 years ago

tstumm commented 5 years ago

I just finished soldering my Redox. After flashing I noticed that pressing a middle row key causes a press on all switches in the same column.

The other half does not have the same issue. I'm quite sure that the diodes are correctly soldered, but I don't have a clue what could be the culprit here. Especially since the whole row is affected.

tstumm commented 5 years ago

I checked the PCB using a multimeter and it seems that all rows go low upon pressing a button in the middle row.

mattdibi commented 5 years ago

Check the soldering for a short, this shouldn't happen. Keep an eye on the Pro Micro headers too, there might be an unwanted contact.

tstumm commented 5 years ago

I already checked the Pro Micro headers, there are only two connected pins, which is intended.

mattdibi commented 5 years ago

there are only two connected pins, which is intended.

Could you elaborate on this?

tstumm commented 5 years ago

I meant the GND pins, but I found another pair of pins that were shorted. I guess the Pro Micro didn't survive getting unsoldered when I soldered it in the wrong way around the first time.

Replacing the Pro Micro solved the issue :)

mattdibi commented 5 years ago

I'm glad you solved the issue. Enjoy your Redox! :smile: