First let me say sorry that I am starting a new thread on the same topic (see thread titeled: JDM hardware help) but now the situation is very different and some what positive, I have made a JDM progammer and now tryinig to test it by the following steps which I got from:
http://www.reprap.org/bin/view/Main/StripboardJDM#JDM_PIC_Programmer
THESE ARE THE TESTING STEPS:
If you're using Windows and ic-prog (which I'm using!), then go to Settings | Hardware Check. Plug in the programmer and leave the IC socket empty. You should observe the following:
The thired step, bolded letters is what I am getting as +3.15V which should be -2V to -2.5V, after that every thing is right, I mean every thing except this bolded letters only not the whole steps!!
PLEASE HELP ME!!
Schematic on the link.(scrol up in given link)
http://www.reprap.org/bin/view/Main/StripboardJDM#JDM_PIC_Programmer
THESE ARE THE TESTING STEPS:
If you're using Windows and ic-prog (which I'm using!), then go to Settings | Hardware Check. Plug in the programmer and leave the IC socket empty. You should observe the following:
- Using a multimeter, measure the voltage on the IC socket between pin 5 (-) and pin 14 (+). It should be just below 5V.
- When you tick Enable Data Out, the Data In checkbox should also become ticked (and vice versa). You cannot directly tick the Data In checkbox.
- Measure the voltage between pin 5 (-) and pin 13 (+). It should read around -2V to -2.5V. When you tick the Enable Data Out checkbox, it should swing to 4.5V to 5V.
- Measure the voltage between pin 5 (-) and pin 12 (+). Tick the Enable Clock box and it should go to +5V (or a little more). Untick it and it should return to 0V (actually about -0.5V to -0.8V).
- Measure the voltage between pin 5 (-) and pin 4 (+). Tick the Enable MCLR box and it should go to +12V. Untick it and it should return to 0V (actually about -0.5V).
The thired step, bolded letters is what I am getting as +3.15V which should be -2V to -2.5V, after that every thing is right, I mean every thing except this bolded letters only not the whole steps!!
PLEASE HELP ME!!
Schematic on the link.(scrol up in given link)