I am building a project that indicates moisture in the soil and when it detects the low resistance in the dry soil turns on an LED. (I already have a circuit for this.)
I was wondering if anyone had any good ideas how I could use a simple sensor to pick up that light off the LED to signal a pump to activate until the light turns off, in which case the pump turns off.
Anything would be helpful, I am not quite sure how to really go about it, or what components I would need, but it doesn't sound too hard to accomplish. (Examples are always nice.)
-Thanks
I was wondering if anyone had any good ideas how I could use a simple sensor to pick up that light off the LED to signal a pump to activate until the light turns off, in which case the pump turns off.
Anything would be helpful, I am not quite sure how to really go about it, or what components I would need, but it doesn't sound too hard to accomplish. (Examples are always nice.)
-Thanks