Critique my capacitive touch PCB

[redgear]

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:

1) 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?

2) 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.

[Ario]

Drilling Holes?
It depends, how are you going to manufacture it.
I suggest sending in a gerberfile to JLCPCB. They can inspect it for free, and will indicate if they can manufacture it. If footprints are correct, the manuafacture will drill the needed holes.

Do you have a schematic?

[redgear]

Drilling Holes?
It depends, how are you going to manufacture it.
I suggest sending in a gerberfile to JLCPCB. They can inspect it for free, and will indicate if they can manufacture it. If footprints are correct, the manuafacture will drill the needed holes.

Do you have a schematic?

Yeah, for the light from LEDs to be visible. Yes, the footprints for the LEDs are default ones. I created a custom footprint for PCB pad.

Attached the schematic.

[Ario]

Okay, doesn't look to bad according to my knowledge. Still not sure what you mean by the LEDS being visible? Do you need them to shine through the PCB itself? If I understand correctly you want one side smooth, so that you can attach a class plate over the touch pad. With LEDS shining through.

What about ordering reverse mounted LEDS? I haven't done something like this before but is would be interesting too see. I assume if you use the correct footprint with proper reverse mounted leds, then yes the pcb manufacturer will know to drill holes for your LED's. Have a look at:

https://www.kingbrightusa.com/category.asp?catalog_name=LED&category_name=KCReverse+Mount+SMD+LED&Page=1

 I have attached a picture of a footprint of a proper reverse mounted LED.

Please keep me updated on this post, would like to see how it turns out.

[redgear]

Okay, doesn't look to bad according to my knowledge. Still not sure what you mean by the LEDS being visible? Do you need them to shine through the PCB itself? If I understand correctly you want one side smooth, so that you can attach a class plate over the touch pad. With LEDS shining through.

What about ordering reverse mounted LEDS? I haven't done something like this before but is would be interesting too see. I assume if you use the correct footprint with proper reverse mounted leds, then yes the pcb manufacturer will know to drill holes for your LED's. Have a look at:

https://www.kingbrightusa.com/category.asp?catalog_name=LED&category_name=KCReverse+Mount+SMD+LED&Page=1

 I have attached a picture of a footprint of a proper reverse mounted LED.

Please keep me updated on this post, would like to see how it turns out.

Thanks.
YEs, i have reverse mouted LEDs already. My question was if I had to place holes manually on the PCB for them to be visible through the pad as the they directly underneath the pads.

Sure, I will.

[redgear]

Update:

I have made some improvement(i guess) to the layout. Can anyone please review it?