Thread: CIM->Victor 884->Arduino not working
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Unread 17-01-2013, 16:58
dyanoshak dyanoshak is offline
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AKA: David Yanoshak
FRC #2158 (ausTIN CANs)
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Join Date: Dec 2007
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Re: CIM->Victor 884->Arduino not working
Quote:
Originally Posted by Whippet View Post
Have you tried connecting the grounds between the FRC battery and the Arduino?
This is not necessary because of the optocoupler that Ether has mentioned.

Your PWM source just has to be able to turn on the LED in the optocoupler.

For the Jaguar, the Turn On Threshold Current for the optocoupler (H1L1M - Datasheet) is 1.6 mA. I don't know the exact optocoupler used in the Victor, but it should be very similar.

Even though I have never played with an Arduino, I would think that its outputs should be able to source >1.6mA at 5V.

I agree that the optocoupler could very well be damaged (pending validation on the 500mA measurement) and possibly the Arduino pin as well if the first attempt was made without a series resistor.

-David