I'm aware that there have been many questions about this series of relays, but I've read them and still can't get this working.
I have this version, with 4 relays.
I'm currently wiring:
- 5v Arduino -> VCC
- GND Arduino -> GND
- I/O 13 Arduino -> IN1
I have bridged VCC and JD-VCC.
I'm running the Arduino blink example sketch, but nothing happens. I've checked it's using the right pin, I've checked that the code is running correctly, but I still can't get it working.
No noise is heard when the IN1 switches from high to low or visa versa, and the status LED doesn't come on either.
I've also tried switching out Arduinos, in case it was an issue there, but no luck.
Can anyone help?