so this time we start to dig a little deeper into La COOL Board, we want to use the Actor Output on our board to active a pump when the soil is dry.
First of I want to explain how it works:La COOL Board has a 3,3 volt Output to control one actor through a transistor or a relay card. So what we want is measuring the soil moisture and activate the pump if the soil is to dry. Don’t worry about the Arduino programm since there is “no” programming, only some configuration files and flashing the card. Our library is taking care of the rest so that you can concentrate on other stuff ;)
Be sure you red our other instructables about La COOL Board :
Building a Outdoor Weather station
The total Budget (without CoolBoard) of this instructable was 0 since I used only stuff I had laying around. If you have to buy everything it should coast less then 50..”