Think I missed this one... Very rough calculation of the extra costs (chip + extra PCB space required) comes to just under $2. For the extra hassles of soldering these, I'd just buy the more expensive crystal, and still be able to mount the end product in a smaller location. Cheers, -Neil. -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Brendan Moran Sent: Thursday, June 13, 2002 2:04 PM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [PIC]: Pet feeder done! Sorry, I have probably missed something, but how hard would it be to latch the outputs for each 7-seg display with something like HC374's between calls to them? It would increase power consumption, but it sure would make the flicker die. You could refresh at 10 Hz and it would look fine. Brendan Moran ----- Original Message ----- From: "Pic Dude" To: Sent: Thursday, June 13, 2002 11:54 AM Subject: Re: [PIC]: Pet feeder done! > Display multiplexing -- at 32.768Mhz, there is bad flicker. At > 131.072kHz there is noticeable flicker, but not too bad -- sort of > like a fluorescent bulb, where occasionally you can see the flicker. > 1Mhz would cure that for sure. > Yes, I've tweaked and tweaked and tweaked to try and reduce the > loop time and the display transition time. > I'm thinking even 200khz might do the trick though. > Cheers, > -Neil. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body