Still cant get it to work

[psxjammer]

Checked every thing.

Built on strip board and using power from usb port(had a spare ps2 mouse cable and a usb to ps2 connector)

I used the Schematic from here (http://users.skynet.be/sky50985/uirt2b_schem.pdfurl)

If i remove the jumper i can program the chip with no external voltage.
i know this because i have checked chip with another programmer.

But still getting cant read first char!

Some resistors are 1 or 2 watts this should not makea differance should it?

Have tryed in desktop and laptop.

Any one help?

[Bitmonster]

If i remove the jumper i can program the chip with no external voltage.
i know this because i have checked chip with another programmer.
This shouldn't be possible. Without the 13V programming voltage the PIC should not go into programming mode. My trials have shown that even 12V isn't enough to enable HVP.

Bitmonster

[psxjammer]

I dont know how it works but it does, after programming i have read the chip back using a different programmer and the hex is the same as in the file.

Cheers

Jamie

[Luc]

It will depend on the type of PIC used, I use the 16F84A and it programs fine with approx 11-12VDC, didn't try it with the "non-A" versions and could well be that these don't do it.
The communication part with the PC seems fine coz the programming works but there are many possible reasons for your problem and most are covered in several topics in this forum. Did you check these?

Do you have a good 5V supply, correct hex file for the PIC speed, correct plugin and configuration (comm port etc..), can you verify the level on pin 4 of the PIC.......

Sorry for the late and brief reply but have to go now.... :cry:

[psxjammer]

I got it going now, i tested the 9 pin D socket and found that pin 2 was broken in side the socket wired straight to the board and everything works fine now.

Thanks for the reply Luc.

Jammer