Flashing AVRs with official Atmel Tools instead of USBASP?

Flashlight Modding and DIY Parts
1

I bought some Nangj 105D drivers from Fastech to flash with custom firmware.

I have an AVR Dragon and STK500 from when I did some AVR work several years ago. I made a programming clip out of a 6 pin ribbon cable but no matter what I did, could not program the AVR with the Dragon. It would never even ID the chip. This was using the Atmel Studio programming tool.

So I switched over the STK500 (same 6 pin cable and clip) and successfully flashed the AVR.

I’m trying to figure out the difference between the Dragon and STK500; why one worked and the other didn’t.

Only brainstorm I have at this time is that the driver circuitry on the Dragon is weaker than the STK500 and can’t properly drive pin 6 when it is connected to the 7135’s?

Any thoughts?

2

Don’t know much about the Dragon…but looks interesting…not sure if it uses the same commands as the USBASP though

atprogram —help

About all the help I can offer…sorry

3

maybe try lowering the busspeed? do you use external power? if not try with external power.

4

Try 5200 baud and send it 3.3v.

Is it failing on the first try (never communicating at all) or is it able to get a few packets but just can’t pull the chip ID and fails because of that? What fuses are you trying to send? Do you have other chip’s you can try? Can you take a chip off and try it bare?

If that doesn’t work power the driver externally (DO NOT EXCEDE 5v).

Also please provide us the basics of your setup- OS, version of AVR studio, any other programming tools version #’s. I assume you’re using direct USB and not a sereal converter.