Solar Powered Water Level Sensor Module using ESP8266 – TechZoneMind
Solar Powered ESP8266 module which measure water level and send it to server via WebSocket connection.
1\. ESP8266 With HCSR04+ UltraSonic Sensor
2\. Communication to server using WebSocket.
3\. Using PHP Laravel as server instance.
4\. SolarPanel + 18650 LiPo battery provide 24hr power supplay.
http://www.techzonemind.com/solar-powered-water-level-sensor-module-using-esp8266/