JDM PIC programmer
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 a 16F84A 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 : http://img218.imageshack.us/img218/633/jdmro1.png Thank you! |
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