Hi, I wonder if anybody might have a clue to what has happened ? I am trying to run a 12 volt vehicular relay off an arduino uno and am using the 13 pin and the ground pins (2) on the power out! I am running the pin 13 through a 330 ohm resistor and an optocoupler to a mini relay and the vehicle rel…

I am new to the Arduino

John_Smith November 17, 2012, 6:20pm 11

@AWOL

I thing junction 9 is the number of one of the parking bays in the M25 car park.

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