Hi Patrick thanks for posting what you have done, it may help other people and I’m glad that you have got yours working.
I think I know what my problem is, as like you I have ruled out the power supply. I have also tried other PIC’s and I have reinstalled the software and tried another software program. I have the correct port selected in the bios. So that leaves the serial port, and from what I understand there are different standards for the serial port. As I am using a laptop I think this is some of the problem.
When I measured the voltage of the serial port it was very low but the K8048 is detected by the software and when I try to program a PIC the read/write LED lights up.
So I am still on the look out for a new computer (but I haven’t done much looking, but you have reminded me to start), as my main desktop doesn’t have a serial port, or I may get a USB adapter.
If you want to use the other serial port I think you may need to change your bios settings.
The link for the web site for the other software I found which is compatible with the vellemen K8048
http://www.qsl.net/dl4yhf/winpic/
Out of interest how useful do you find your scope as I don’t have one, and am not really sure what you use it for?
So when I get my programmer working after making the stepper driver’s for my CNC the next projects will be:
I found this web site were some one has made a clock out of a cathode ray tube from a scope and using PIC’s to control it.
This has to be one of the coolest clocks in the world http://www.webx.dk/oz2cpu/clock-scope/scope.htm
Tetris on a pic
http://www.rickard.gunee.com/projects/
james