OpenSprinkler

As a user i would like to see more active development, however the latest firmware is. From November 2023 https://github.com/OpenSprinkler/OpenSprinkler-Firmware/releases All that said. It does exactly what i want. If you want a product id say go for it. You can easily make your own otherwise except for some of the advanced stuff like weather interupts and water lenght adjustments may be a bit of a challenge for a simple esphome implementation.

Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23.

I would suggest you try OpenSprinkler. It is all open source and works great with HA using the OpenSprinkler integration. This integration is not a hack. It is made just for HA by the OpenSprinkler people. I am reasonably certain that it is entirely esp32 based. It installed right away and I love it! It just works great! I was going to make my own esp32 based system. I am sure it would have worked great. This was simpler, easier and required no experimentation to get it right. It just worked! I hope this helps!

Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23.

Ive been using opensprinkler for years. It works fantastic. Although I do run a farm with 48 zones and I have to keep backups on hand. Lightning storms tend to travel through my network of low voltage wiring under ground and fry the controller. It integrated with HA flawlessly I just discovered as well. (Only been playing with HA for a few months despite having a robust network and smart home) wished I had dived into it sooner.

Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23.