I'm Coen Rijn and a absolute beginner in Arduino. I've followed a tutorial with one bitton and one relay. This was working. But now I've replaced the 1-relay print for a 8x relay board. I've use the same connectors and pins but the board seems to be dead. Nothing is working. I even use a separate powersource (5 volt) and connect 5 V to VCC and GND to ground. But even then there is no action on the board.
Is the board broken or is it normal that ther is no smal led lighting up
thanks in advance
- include a wiring diagram
- include a photograph of your setup
- include links to the relay board specs
- include your code (use code tags) - read the advice at the start of this forum
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