![Contour next one battery](https://loka.nahovitsyn.com/96.jpg)
#Opensprinkler water level install
now has a watering system that can be controlled over the web, and without the need to install any custom apps. Scheduling is then controlled by Google Calendar, in concert with Home Assistant.
![opensprinkler water level opensprinkler water level](https://opensprinkler.com/wp-content/uploads/2020/04/Monitored-Water-Levels.jpg)
![opensprinkler water level opensprinkler water level](https://voir.pt/wp-content/gallery/09-triac/IMG_8614.jpg)
This was then hooked up to run off the Holman’s 24 VAC supply via a CCTV power supply, allowing the new controller to be run in parallel with the existing hardware, just in case. A relay board packing an ESP8266 was sourced, and flashed with the Tasmota firmware. decided that replacing this with something fancier would thus be straightforward. The existing Holman irrigation system consisted of a control box, hooked up to four solenoid valves controlled by relays. had such a rig, but wanted to bring it into the 21st century, IOT style. However, many of the products on the shelf at your local hardware store can be quite expensive for what amounts to a microcontroller, display, and relay board. Irrigation controllers have been around for a long time, often using similar hardware inside that would be familiar to the average maker.
![Contour next one battery](https://loka.nahovitsyn.com/96.jpg)