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Re: Programming a 12V relay with Arduino
Arduino is well documented, so I'm sure there's resources for the particular syntax. You'll probably want to use a simple output rather than a PWM. Just pulse the output to get your relay to switch.
The bigger deal is driving the coil. You'll need to make sure your relay will actually switch at the Arduino output voltage. If that doesn't cut it or if the coil needs more current than the arduino output can provide, you'll need some extra circuitry (like a transistor) to handle the coil drive.
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Last edited by jee7s : 18-09-2014 at 18:24.
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