In a previous post, “MQTT Messaging With Java and Raspberry Pi,” I described how data could be sent from a Raspberry Pi Linux board and Raspberry Pi Pico microcontroller to HiveMQ Cloud.

Raspberry Pi Pico W

On June 30, 2022, Raspberry Pi released a new product: the Pico W, a new version of the original Pico, but with Wi-Fi onboard. The new board is for sale for $6, compared to the $4 of the original Pico. The new Pico W has the same form factor as the original Pico. There is a minor change in the wiring as the connection of the onboard LED has changed. You should be able to swap to the new version in most existing projects without any problems. With this new Pico W, we can simplify the setup of the previous article, as the separate Wi-Fi module is no longer needed.