Pico Ringer

This is a simple MicroPython project to forward a Ring chime from my HomeNode automation system to speakers.

A Pi Pico W listens for MQTT messages and uses a PCM5102A DAC to play the sound via a 3.5mm output.

Setup development environment

Python venv

1. Install python3
2. Create a virtualenv using python -m venv .venv
3. Activate the virtualenv using source .venv/bin/activate or .venv/Scripts/activate.ps1
4. Install the requirements using pip install -r requirements.txt

Flash Micropython

You can grab the MicroPython firmware for a Pi Pico W from this page. Drag/drop as per usual.

Config file

Create a config file for credentials in src/config.json...

{ "wifi_ssid": "", "wifi_psk": "", "mqtt_server": "192.168.1.4"}

Setup Files

• Install libs using mip.install('')
• Copy over the audio file
• Copy config.json and helper files

Developing

The easiest way to develop is to use mpremote to mount the src folder.

To begin clear out the main.py file and reboot. This allows you to use other commands without interference.

import os
os.remove('main.py')

You can then mount the src folder...

mpremote mount src

From REPL you can start executing code. To "hot reload" a file you can run the following command. This will let you import updated code.

from utils import clear_mod
clear_mod(ringer)