problem with my EPIC

[ardhuru]

Try changing the 2 pull ups on the Clock and Data lines from the original 10K to 2.2 K. It worked for me.

Regards,

Anand Dhuru

[gebillpap]

Dear Anand Dhuru
I did what you suggested and it worked .
Thank you for your suggestion.
I believe MicroEnginnering should quote on this as it can be a problem with many others.
Note that I did purchase the Epic programmer built and tested .
Thank you again
BILL

[bitbanger]

Try changing the 2 pull ups on the Clock and Data lines from the original 10K to 2.2 K. It worked for me.
Regards,
Anand Dhuru

Anand,
There are three 10K resistors on my EPIC Plus, and can't find a skematic diagram for it. The help guide lists them as R5, R8 and R10. Which ones are the pullups you mentioned?

I am fighting a weird problem all day trying to program the 16F88 with mine. It programs ok about 1 out 15 trys, and that one only after a full erase.

[ardhuru]

Hi,

In my schematic they are denoted R3 and R4. Anyway, if you have the original EPIC PCB, these two are the ones directly below Q1.

Alternately, you could trace them to pin nos. 12 and 13 on the 18 pin programming socket.

Regards,

Anand

[bitbanger]

Thanks,
My EPIC Plus currently has 1K resistors in for R3 and R4. By any chance did you mean to change the original 1K resistors to 2.2K? I am guessing the idea is to have "stronger" pull-ups right? I guess I'll stick with what I have. Maybe that is what the "plus" part was all about.

[ardhuru]

Hello,

No, if you already have 1 K pullups. dont bother changing them to 2.2K. That is unlikely to help. In this case, I suspect the problem is elsewhere.

Regards,

Anand

[buddhafragt]

you can try to change the 7404 chip.
sometimes he is destroyed because of over voltage at the LPT port.

[elankart]

Hi I'm having the same problem, I get an error message saying "Code error at..."... I tried changing my adapter and cable... But nothing worked..I'm getting another error message "Target device does not match the selected device".. I'm using pic16f84a... But if I select it frm the list I get this erro message.. If I select pic16f84 I'm not getting any kind of problems(but still I'm not able 2 program my uC)..

Plz I need some help, its been months since I've bought this programmer, but still I'm unable to use it...