Mimosas are sensitive plants. If left without water for a week (whether because of holiday or you simply forget), you will be sorry!
There are many Arduino projects dedicated to this objective, but it depends on what you want:
- Receive a warning (alarm sound, SMS, etc.) and you must go water the plant?
- The device is watering the plant, so you just visit it from time to time.
We selected the second option.
This the central unit:
Mimosa spirit, relative humidity, and days & hours since last watering.
Mimosa, Arduino unit, moisture sensor, water hose.
LCD I2C adapter (left), Attiny85 (up), Pololu MOSFET (down). Power (L), pump and sensor wires (R)