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

system November 18, 2012, 12:53pm 15

waits for 50 milliseconds = 0.02second

Novel.