malfunctioning "b" COL_3

[mbenecke]

Hi,

thanks for your work, i would love the Idea to have qmk running on my Kinesis ADV 500.

I was following your guides for set up the Teensy 4.1 as straight as possible. Now I see me in a similar situation as landakram in issue 16 COL_3 troubles me, it is so hard that the Teensy is sometimes reset and I have to flash it again. It prints out 1000nds of characters.

I was thinking, "ok, lets check the connections", I used an USB Power Brick, so no OS driver in charge and hooked up my Ozi

I check "20" and G,

• it shows no difference if any key is connected or not, a straight line for 3V. Which is OK for me.
• it doesnt care if i press the upper 2 character lines, great.
• If a press keys in the bottom row (z-v;n-?) it shows this behavior: A sign of the matrix scan I assume?
• Buf if I press "b" it locks like this, which looks not ok:

Any advice how to proceed? Any other measurements you suggest?

[stapelberg]

Hey 👋

Usually, such issues are soldering point issues. Double check all soldering points, either by carefully inspecting them under bright light, or by just re-soldering all of them just in case.

If nothing else helps, maybe soldering another one is the easiest way to a working board for now.

[mbenecke]

Hi,

after fun with re-solder, on, off, re-solder, .... It seems it is an temperature issue, so again caused by the board.

Just for your Info, the process of:

1. disconnect everything (Keys&USB)
2. start the qmk console
3. connect only USB, Bord on a flat isolated surface
4. see a connect message in the terminal
5. wait 5min or so
6. here wer are 1000nd of lines pressed und unpressed
7. disconnect USB
8. disconnect message in the terminal
9. connect usb
10. connect message in the terminal
11. direct the messages of keypress (without keys connected)
12. disconnect and wait 10min
13. connect and wait 5min

14. again the keypress messages

    so thanks for your effort and to all readers Hack the ... Keyboards .c0(1995)