Quote:
Originally Posted by daplatapus
One of the input pins:
One of the actual relay modules:
and one of the jumper pins on the far right of the board:
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VCC - positive 5VDC
GND - ground
IN1 to IN8 - Arduino outputs
Take a jumper, connect to GND and to any of the IN1 to IN8 inputs. You should hear the relay latch.