paul: Analog reference voltage from the uno is available. The adc and dac can use the same one.
Also, the "nano" arduinos with mini-usb connectors are pin (out)-compatible with much smaller footprint. They're load and go with the same ide. Used lots of them-nice. 16 bit serial dacs are available and cheap. Adafruit is good to do biz with as is sparkfun. usew of the builtin comparator is in the 328 data manual. Don -- "The power of accurate observation is commonly called cynicism by those who have not got it." -George Bernard Shaw Dr. Don Latham AJ7LL Six Mile Systems LLC 17850 Six Mile Road POB 134 Huson, MT, 59846 VOX 406-626-4304 Skype: buffler2 www.lightningforensics.com www.sixmilesystems.com _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.