Re: [sudo-discuss] Arduino current protection code?

Are you worried about limiting current from arduino pin to servo signal pin or vice versa? Servos have their own controller built in so you shouldn't have to worry about any spikes on the signal pin. If you were driving motor coils directly, I would add a diode from low side of the coil to Vcc to shunt backward current spikes. Also, Arduino can only source 40ma of current so if your servo draws more than that you should use a power transistor (ULN2003 has 7 500ma transistors on one dip-16 chip) or maaaaybe gang output pins if you're close but really don't gang output pins. What are you working on with such heavy duty servos? :) Cheers, Hol Feb 24, 2013 10:50:20 PM, kinetical(a)comcast.net wrote: Hi all and Jake if you get this,