3.3v/1000ohm(1k) = 3.3mA 3.3/3000ohm(3k) = ~ 1mA I would put that one in, just in case, to make sure you dont fry the pin by accident if you have a dedicated part number for the servo, check you the datasheet for the control pin input impedance, its usually in the 10k and you don't need it; a wild servo i would use it though so as to be cautious.
On Wednesday, 2 September 2015 14:40:23 UTC+10, Frédéric wrote: > > Le mardi 01 septembre 2015, terra a écrit : > > > what page? > > p234... > > > usually you need to limit the current otherwise you may destroy the > > board, though 3mA is usually not enough to drive the servo > > Really? It is just a logic signal, not the servo power... > > Derek says that the 1k resistor limits the current to 0.01mA. > > -- > Frédéric > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
