Hi Bob, could I see a copy of that setup? Thanks! Bob ----- Original Message ----- From: "Bob Axtell" To: Sent: Wednesday, May 28, 2003 1:54 PM Subject: Re: [PIC]: New PIC programmer ... > I get around Flash programming problems by simply diode-isolating the PIC > only as well as its MCLR line. I use a low-drop diode such as SD101, etc. > I make sure that the isolated VCC has proper bypassing, and that the MCLR > line is pulled up OK, but is easy to pull down by the programmer. > > At the low current that the PIC normally uses, the diode voltage drop is > about 100mV max, which makes NO difference in any design I've worked, even > at 24Mhz (I've overdriven a few PICS before, for video work). > > Neither I nor any client has had trouble programming with anything, even > David Tait's design works great. > > If the board has room, I make the programming connector an RJ12-6 (6-pin > telephone jack). Sure makes programming easy in a poorly-lit room or auto, > back of van, or whatever. > > I have made a PDF schematic of the setup for those who want it, just send > an email. > > --Bob Axtell > -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads