Water Level Sensing¶
Purpose¶
Tracks the volume of nutrient solution in the reservoir to prevent the pump from running dry and to trigger top-ups.
Hardware¶
- Sensor: TBD (e.g. ultrasonic HC-SR04, float switch)
- Interface: TBD (GPIO / I²C)
Integration¶
- Polling interval: TBD
- Low-level alert: triggers top-up or alarm