Objective Development Forums

Hello,
I need an USB programmer for my ATMEG8 microcontroller. I do not wish to buy a board, but want to build on my own.
Is there any programmer circuit that requires no extra microcontroller other than the target microcontroller which is to be programmed.

Please do reply if any one know of it.

Thank you.

Hi Vinuthan.

Very nice question. Please look at:

http://matrixstorm.com/avr/tinyusbboard/

This board can also be turned into an USBasp programmer by an example firmware.

Best regards

For bootstrapping your programmer, you could use

http://nahians-avr.webs.com/parallelportprogrammer.htm

These ponyprogs are not quite relieable, but for one time programming they are sufficient.
A great advantage is you just need an old computer equipped with a parallel port.

But be careful the circuit may not be safe for your computer - it really should be an old one !
And you really should just use it in rare cases. (For example just for building your tinyUSB board)

Ponyprog may also NOT work with USB->parallel adapters, you really need a computer!

Best regards

This issue I dedicated a section:

http://www.matrixstorm.com/avr/tinyusbb ... ickenoregg

Also with a new idea to use just a keyboard to program an AVR.
I am in the process of writing a software for this purpose - if you are interested please contact me.

Best regards