Hi! I have built this onre too and it works well. But I have slow computer (486dx4-120) - I heard there were people having problems on faster computers. I used PIP02 and MSWindows software by Tord Andersson without problems. Do Your programmer give proper 5V suply and GND to chips ? (I had such simple bug in the beginning) Best Regards, Madis John Mullan wrote: > I have tried everything but cannot get this unit to program a PIC > > I am using the JDM84 and PIP02. The voltage on MCLR! gets up to about 13v > and data activity appears on RB7. The hard seems fine > > Anyone else build this?? What problems if any were encountered?? > > John Mullan