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2 votes
1 answer
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Capacitive Touch Pad Design with TTP224 ic

I am designing circular capacitive touch pads of Dia:20mm driving from TTP224 IC on my PCB. There will be 2mm glass panel above Touch pads. My PCB contains other circuits like Arduino, Antenna bands ...
saurabh kandalkar's user avatar
1 vote
0 answers
120 views

Correct design of capsense controls

I am trying to design a PCB with some capacitive controls. My first iteration did not seem to work well: This was a 2-layer 1.6mm board with one circular control, and 5 buttons. The board is 48mm ...
Rocketmagnet's user avatar
  • 27.6k
1 vote
0 answers
380 views

Ground mesh under the capacitive touch pad

I am going replicate a circuit basing from adafruit AT42QT10xx, I will be using the AT42QT1010 variant. The touch pad is the blue pad bottom layer, but there is this mesh on the top layer after i ...
Jake quin's user avatar
  • 2,004
0 votes
1 answer
103 views

How to simulate a finger touch electrically to remove noise

I am working on a project with "SIM800L" GSM module, the problem is that there is a noise from the module in the calls and it disappears when I touch the module's body with my hand. Kindly, ...
Mohamed Essam's user avatar