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
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