Just built a few wireless temperature/humidity sensors with Raspberry Picos and DHT22s.

I've been running a pretty extended 1-wire network for many years. It has always been very reliable except the temperature/humidity/brightness sensors I had deployed. No filters, repeaters, network splitting etc. could really remedy the problems. Now removed the 1-wire Multisensors and deployed this wireless alternative while the other 1-wire devices remain in use.

The new devices cost around 10 euros each and programming them with with micropython is a piece of cake for anyone who has some experience using microcontrollers. The Data are sent to OpenHab using MQTT, integrating nicely with the existing setup.

When I started to build my sensor network almost 20 years ago, these devices did not exist of course. But today I'd build almost everything using WIFI enabled microcontrollers and MQTT. No pulling cables, no devices taking down the entire network when failing and it's cheaper too. That is pretty awesome!

#onewire #wifi #MQTT #homeautomation #OpenHAB #RaspberryPico