capacitive touch circuit review

Thread Starter

redgear

Joined Oct 17, 2019
136
My first attempt at making a capacitive touch PCB. I followed the guidelines from Microchip's Application Note.

The PCB will be overlayed with 2mm thick glass.

My questions:

The LEDs are reverse mounted, but in the 3D model there is no hole on the touch pads. Do I have to manually drill holes?

Can I place the connection header in the space between two touch pads(back layer )? Since it is a through hole component I am afraid it will cause issues with touch detection.

Thanks.

touch_pcb.PNG

touch_schematic.PNG

touch_pcb_3d.PNG
 
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