On Wed, 2010-06-30 at 14:12 +0200, Ingo Scherzinger wrote: > Hi Roman, > > this solution is working also. So in this case it's not really necessary to > change the firmata itself. Anyway, I would prefer to have this behaviour as > the default behaviour, i.e. included in firmata. At least all of this this > should be documented.
Actually, it is here: http://www.arduino.cc/en/Tutorial/DigitalPins It's not firmata exposing this functionality, but the arduino. So I think it's correct that Firmata handles it transparently, so that from Pd you are still able to decide yourself, whether you actually want that pull-up resistor or not. Enabling it per default is _not_ a good idea, since there are many applications, where you deliberately want the pull-up resistor not to be enabled. Imagine a sensor with a very high impedance (for instance, an LDR in series with a fixed 1 MOhm resistor), with the pull-up resistor activated the input would always be HIGH, because the internal resistor would brutishly pull the voltage up. Roman _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
