I have built this baby and found the voltage correct across both zener diodes.  In fact, I get 13.75v to the !MCLR pin (spec sheet says 12-14v).  The RB6 and RB7 pins are held down to the correct voltage (.5v to .6v).

After saying all that, mine won't work either.  It takes almost 2minutes to try to program and then error.


-----Original Message-----
From:   Michael Melinosky [SMTP:MELINM@TORRINGTON.COM]
Sent:   Tuesday, November 09, 1999 12:07 PM
To:     PICLIST@MITVMA.MIT.EDU
Subject:        F84 programmer question

I was wondering if anybody tried to build the f84 programmer by Jens Dyekj¾r Madsen at http://www.gbar.dtu.dk/~c888600/newpic.htm.  I recently built this programmer and have not been able to get it to work.  I've checked the power supply voltages across the zener diodes and found 0 volts across the 5.1 volt zener while programming an F84. Is this correct?  Also, when running the pictest program, it seems to time out when doing a random number check and a writing zeros check.  Has anybody had any luck with this board?

Thanks, 

Mike