I am trying to power a single string of Christmas lights with the simple blink sketch. I am using a solid state relay, and an Arduino Uno. I tested the solid state relay and christmas lights with a 9v battery, and that worked. I know the blink sketch is uploaded and working corectly because the on board LED for pin 13 is blinking. But the sketch is not working on the christmas lights.
The connections are like this: grnd to input - on the relay; digital pin13 to + on the relay; output + to bare wire on the christmas lights and output - to the other bare end.
So why am I not blinking my lights?
Sorry if this is a painfully obvious thing, and thanks in advance!