Guest post – Building a custom Raspberry Pi Pico-powered WiFi temperature sensor using MQTT and CircuitPython by David Booth • 23 April 2021 • 0 Comments David Booth is here with another guest post. This time a custom temperature sensor using a Raspberry Pi Pico and a self-designed PCB. Overview A custom, low power temperature sensor powered by a Raspberry Pi Pico with an LCD display… Read more →