Setting up 3 Raspberry Pi Pico W's with connected sensors to send telemetry over MQTT to a Raspberry Pi 4 MQTT Broker.
Directions to setup on pico w https://core-electronics.com.au/guides/getting-started-with-mqtt-on-raspberry-pi-pico-w-connect-to-the-internet-of-things/
Micropython open network connect (WRCE) micropython/micropython#10273
How to Send and Receive Data Using Raspberry Pi Pico W and MQTT (Updated) https://www.tomshardware.com/how-to/send-and-receive-data-raspberry-pi-pico-w-mqtt
Install Mosquitto MQTT Broker on Raspberry Pi https://randomnerdtutorials.com/how-to-install-mosquitto-broker-on-raspberry-pi/
MAC addresses: Pico1: ############ Pico2: ############ Pico3: ############