Issues with BLE Nano 2 analog pins


#1

I’m working on a pressure sensor that I’ve made and I was testing the analog pins on Nano 2 earlier today and noticed not all of them seem to be working.

// Analog channels:
// A3 - works, resting value around 170(find out why)
// A0 - doesn’t work, resting value around 900(find out why)
// A1 - doesn’t work, gives random chars
// A2 - works partially, have to press REALLY hard to get to 500 value
// A5 - doesn’t work, gives sporadic values
// A4 - doesn’t work, stuck on 1023

This is the basic rundown and my notesof the pins, I’m following the picture on https://github.com/redbear/nRF5x/tree/master/nRF52832 if anyone is wondering.

The sensor works on all pins on Arduino Uno/Due so what am I missing? I’m connecting power to VIN, ground through a 10k pullup to GND and a wire to one of the analog pins.


#2

What type of pressure sensor is it, and what does your circuit look like?