deskthority

I am such a newbie in projects, so I use the Switch Hitter from elitekeyboard to test out a PCB with a pair of tweezers.
And Switch Hitter gives consistently chattering alert (red) to a single key, and consistently green to all other keys.

If I understand correctly, key chatter should be related to switches and I have no idea what it means when it says consistently a key placement has chatter when tested with a pair of tweezers - on a PCB with not a single key installed.

Well, am I overkilling it to use Switch Hitter to test a PCB? What do people normally use?

What is the firmware, and the location of that switch within the matrix?

Have you checked that the switch's diode does hot have a faulty solder joint?

Findecanor wrote: 09 Jan 2019, 17:10 What is the firmware, and the location of that switch within the matrix?

Have you checked that the switch's diode does hot have a faulty solder joint?

That's a KBD75 and the key is the Tab key, with no switch soldered.
The diode seems to be correctly soldered at the back.

When I tried it with a switch connected using Holtite hotswap sockets, there appears to be no chattering error on Switch Hitter on that key. Of course, it then means fine, but it further puzzled me...

Chatter shouldn’t be a problem with no switches installed. Seems more likely you’re picking up noise than useful signal. Onward with the build!