Dead dongle

Go To Last Post
4 posts / 0 new
Author
Message
#1
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

I was using the Dongle that came with my STK200 to program mainly 2313s and 2343s in circuit. Then one day I went to use the thing, and suddenly it tells me it can't find the dongle attached to any printer port. I had it hooked to an A-B port selector, which seemed to work before, but even when I plugged it directly into the printer port on the computer it still couldn't find it. The OS is Windows 98. Any ideas of what I can check? Is a dongle really necessary? Are there schematics of the Atmel dongle available? Can I buy a new one without a whole new STK?

admin's test signature
 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Hi John,

Go to http://bray.velenje.cx/avr/isp/i....
There is a schematic for you to build, it's easy.

Yungky

admin's test signature
 

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Hi John,

There's not much can go wrong with the dongle cause there's not much to it. Replace the 74HC244 buffer chip and it'll probably spring back to life.
I'd test your parallel port first though. Hook up a printer and see if it works OK.

Cheers
Jack

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

My dongle is up an running again thanks to the help of Jack and Yungky. Thanks for the schematics and advice!
John

admin's test signature