• 18/08/2023 v1.1 OTA management and minor fix
• 20/05/2022 v1.0 First release

First the problem: I must refill a 1,5Km far water tank, so I need two devices:

• a server that manages a pump: if the remote tank isn't full the server start the pump with a relay and when the tank is full, stop the pump.
  • Start-stop pump;
  • Manage the remote message;
  • Prevent dangerous action if the remote device is no more active;
  • Monitor to select an operation mode and status.
• A client that is in a remote position (tank position) checks the water level and warns the Server if It�s all ok or the tank is full.
  • Check the max and min level;
  • Warn Server about status;
  • Battery and solar-powered;
  • Sleep mode if no more need.

Here is a simple demo video.

1. LoRa remote water tank level and pump controller: intro
2. LoRa remote water level and pump controller: server software
3. LoRa remote water level and pump controller: client software
4. LoRa remote water level and pump controller: server PCB
5. LoRa remote water level and pump controller: client PCB
6. LoRa remote water level and pump controller: entire server with 3D printed case
7. LoRa remote water level and pump controller: entire client with 3D printed case