> So, OK, I can do it internally, although the only devices I've got to hand > with internal ADC are ATMega8-8PU (8MHz DIP) - where only 6 of the possible > 8 ADC channels are available in that package (doh!) Not sure whether to > whittle down to 6 parameters, use the external ADCs or just get different > packaged devices. Or get a 4051? Olivier