Hello, A while ago I came across a schematic for a slightly modified JDM PIC programmer which I just finished building. Unfortunately using it with IC Prog did not yield good results- even though Vdd and MCLR voltages are present, I am only getting blank data when trying to read/write a16F84A chip.
- What other signals should I be checking and what are the expected values ?
- What are reliable settings in IC Prog ?
- Does the schematic look correct? I compared it with the original design and noticed a 2.2k instead of 1.5k resistor and the transistors are different, though they seem to have similar specs : formatting link