STM32 TSC Sampling Cap Not Charging

[Josh Meyer]

Posted on May 24, 2018 at 21:59The original post was too long to process during our migration. Please click on the attachment to read the original post.

[Josh Meyer]

Posted on June 01, 2018 at 22:46

Still very curious about this issue, does anyone have any insight?

[T J]

Posted on June 02, 2018 at 04:07

Sorry Josh, I have never used the Function.

preventing me from seeing Cs charge up on the first acquisition?

I don't understand the question.

the Yellow Trace looks ok, you can see the base level is charging up its DC level but retaining a lot of 'Activation' above it.

Maybe you can show a video ?

without finger close, and then move your finger close and keep the video on the Scope.

these TS part are extremely sensitive, any high density item nearby may cause false 'lock on'.

are you sure its not working ?

do you think that some part of the casing is affecting the circuit ?

I did buy a F072 TS demo board, but I havn't seen it for over a year now, I am sure it is here somewhere.