PicoMQTTServoDemo

A Proof of concept demo using MQTT to control Servos using a Raspberry Pi Pico W

Dependencies

The demo has been built using the following libraries. Copies of which are included in the /lib directory (unchanged).

1. The mqtt_as client from micropython-mqtt.
2. I created a prototype asyncronous servo library servo_as to drive the servos.

Requirements

This is a list of items used:

1. Raspberry Pi Pico W
2. Waveshare Pico-Servo-Driver
3. 2 SG90 Servos connected to pins 0 & 1
4. A local Mosquitto Broker (or use test.mosquitto.org)

Getting Started

1. Download/ Clone this repo
2. Add a file secrets.py to the top-level directory with the following content :

SERVER = 'test.mosquitto.org'  # Or the adress of your local MQTT Broker
SSID = '<Your WiFi SSID>'
PW = '<Your WiFi Password'

3. Download the project to your pico and run demo.py
4. Send commands using any MQTT Client (e.g.EasyMQTT) to topic /PicoMQTTServoDemo/command

Servo1 90
Servo2 -45

5. Monitor servo status by subscribing to topic /PicoMQTTServoDemo/status