We have a simple system with an ARDUINO NANO, a RELAY, and a MINI WATER PUMP. Subscribe, it doesn't cost anything!!! Thanks so much, guys!!!
Here are some other videos from the channel, in case they're helpful.
Water level sensor: • ARDUINO NIVEL de AGUA. Muy ÚTIL y FÁCIL!!!...
Automatic irrigation: • RIEGO AUTOMATICO con ARDUINO. Muy ÚTIL!!!!...
Smart, fully automated garden: • HUERTO INTELIGENTE ARDUINO: DHT11, humedad...
I'm posting the project on the Arduino project hub at the following link:
https://create.arduino.cc/projecthub/...
The software is the Blink example, but it works with a relay.
https://create.arduino.cc/example/bui...
This in turn activates and deactivates a pump. The pump is powered through a wall outlet, which provides 5V DC.
I use this system to water plants, but it could be used to filter water in a fish tank, etc.