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Hellp with PIC programmer

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DevilMKD

New Member
Hello
I have a problem with my PIC programmer
it's a Tait classic programmer, I use WinPIC-pic programmer as a software
when I start to programm the device it shows me an error mesage
when i click on blank check it says that the pic maybe is not blank
when i erase it and then click on blank check it shows again this message
i have tried also with IC-Prog but its the same
i can't programm anithing

i have programmed many pics
it worcks for a time befor this
pls can someone hellp me

p.s sorry for my bad Еnglish
 
Last edited:

Wp100

Well-Known Member
Hi,

It could be many things causing your problems, bad connections or soldered joints to start with.

However I had similar wierd problems with one of those programmers, some of them can be traced to using a too low voltage psu, at least 15v is recommeded by some folk.
Also your parallel cable, should be a good quality screened lead and as short as possible.
Similarly the wires on your programmer board must be short and soldered - not long leads on a breadboard.

Although I could often program up small programs, if I had a large one for some reason it would fail to work, until I had tried doing it for 6 times - it would do this regularly - why ?? - thats just typical of these types of circuits.

Best plan - try and program up a Pic18F2550 chip, then you can build yourself a great Pickit2 Lite programmer as shown elsewhere on this forum.
 

Gayan Soyza

Active Member
I agree with Wp100.

Now nobody is worried about ancient programmers.Now there are plenty USB programmers available for cheaper.Also you can built a one by yourself if you like.

Make & see how smoothly those latest programmers functioning.
 

DevilMKD

New Member
Hi,

It could be many things causing your problems, bad connections or soldered joints to start with.

However I had similar wierd problems with one of those programmers, some of them can be traced to using a too low voltage psu, at least 15v is recommeded by some folk.
Also your parallel cable, should be a good quality screened lead and as short as possible.
Similarly the wires on your programmer board must be short and soldered - not long leads on a breadboard.

Although I could often program up small programs, if I had a large one for some reason it would fail to work, until I had tried doing it for 6 times - it would do this regularly - why ?? - thats just typical of these types of circuits.

Best plan - try and program up a Pic18F2550 chip, then you can build yourself a great Pickit2 Lite programmer as shown elsewhere on this forum.

the problem is that the programer had work for a wile
and now it doesnt work

I agree with Wp100.

Now nobody is worried about ancient programmers.Now there are plenty USB programmers available for cheaper.Also you can built a one by yourself if you like.

Make & see how smoothly those latest programmers functioning.

I want to build my self a programmer not to buy, all we know how to buy :D
and i don't want with a mcu as a processor, I want a solid one ( old one ) ;)

when I programm MCLR is 13.4V
the same is when i read also
its an Tait classic programmer 7407+PNP transistors
Here is the schematic from this one



here is the programmer thet i hawe builded
 
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