8-Channel 12-Bit ADC for Raspberry Pi, all ADCs reading 0

alexpowell · July 21, 2022, 1:16pm

HI,
I was able to get it working by using the code in the link below.

Seeed-Studio/grove.py/blob/master/grove/adc.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# The MIT License (MIT)
# Copyright (C) 2018  Seeed Technology Co.,Ltd. 
#
# This is the ADC library for Grove Base Hat
# which used to connect grove sensors for raspberry pi.
# 
'''
This is the code for
    - `Grove Base Hat for RPi      <https://www.seeedstudio.com/Grove-WS2813-RGB-LED-Strip-Waterproof-60-LED-m-1m-p-3126.html>`_
    - `Grove Base Hat for RPi Zero <https://www.seeedstudio.com/Grove-Base-Hat-for-Raspberry-Pi-Zero-p-3187.html>`_

Grove Base Hat incorparates a micro controller STM32F030F4.

Raspberry Pi does not have ADC unit, so we use an external chip
to transmit analog data to raspberry pi.

Examples:

This file has been truncated. show original

i changed line 57:
def init(self, address = 0x04): to def init(self, address = 0x08): as this is the address of my i2c on the unit.
you can check the i2c address by opening command prompt and typing ’ i2cdetect -y 1’

hope this helps.

cheers

Alex