Soil Moisture sensor

Other Hardware Sensors
1

Hi everyone,

Does anyone know if it is possible to use the AC (2 Digital + 1 Analog) method mentioned here http://forum.arduino.cc/index.php/topic,37975.0.html but with multiple sensors.

I would like 3 sensors, and would like to use the lease amount of pins, I was thinking of sharing one pin, and only reading settings one at a time.

Tx,
J

2

to remind you watering your flowers u'll need six nails, three resistors and three analog inputs.
A multiplexer wont help you reduce number of pins involved.
U can run those 3 in serial. Then you will know when at least one of them needs water

3

Thank you :slight_smile: