Capacitive sensing with nrf53

[Rahul Wagh]

Hi,

We want to implement capacitive sensing of nrf53.

Can you help how I can use the nrf53 for capacitive sensing feature, as there is not much information given in datasheet.

Mainly on hardware design consideration for interfacing the capacitive pin with the touch pad on the PCB.

And also, if any information on PCB touch pad design will help me.

Thanks,

Rahul

[Simonr]

Hi Rahul

So, the hardware support for capacitive touch is there in the COMP peripheral of the nRF5340, but AFAIK there is no software support in the nRF Connect SDK for capacitive sense on the nRF5340, so this is generally not a good idea I'm afraid. We do not have any hardware design notes on capacitive touch pads either I'm afraid.

Best regards,

Simon