There are many 8 pin microcontrollers: https://octopart.com/parts/category--microcontrollers/number-of-pins--8/sea= rch?q=3Dpins&p=3D60&c=3D4300 one which may match the power supply pins is a Freescale one: http://datasheet.octopart.com/MCHC908QT2VDWE-Freescale-Semiconductor-datash= eet-10568.pdf You have to do a very deep analysis. Asking if its worth to...? Vasile On Mon, Dec 7, 2015 at 3:55 AM, Bob Blick wrote: > I'm reverse engineering this candy dispenser in order to improve it: > > > http://www.bedbathandbeyond.com/store/product/sharper-image-reg-motion-ac= tivated-candy-dispenser/204589 > > I'm using it as an indoor cat feeder, filled with kibble. It actually > works pretty well out of the box. It only took a couple of days to teach > the target cat to use it. > > It's got a small PC board with discrete phototransistor and IR LED(set > up as a reflective sensor), micropower 3.3V regulator, LM393 dual > comparator, three transistors, assorted R's and C's, and an 8 pin SOIC > with no markings. > > The mystery chiip has ground on pin 8 and +3.3 on pin 1. So my first > guess is a PIC12F508 or some other 8 pin PIC. But are there any other 8 > pin chips with power and ground in that configuration? > > Thanks, Bob > > -- > http://www.fastmail.com - Same, same, but different... > > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .