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napierzaza

1 Bit Synthesizer

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Anyone have an Atmega programmer? I built the 1-bit synth and a ISP for the ATMEGA some time ago, but the programmer never worked. After some fiddling I destroyed the chips I had and gave up. But now I'd like to get it working, so if anyone has any Atmegas, and a prorammer I'd pay to have it burned and sent to me :-)

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If you have an ISP programmer, you did pretty certainly NOT destroy your AVR (because you can´t with a normal ISP programmer). Most likely you´ve fused it to a state where the AVR thinks it´s getting it´s clock directly (instead of the RC clock or a quartz clock). I´ve got the same problems at the beginning. Check out these links here: http://www.avrfreaks.net/ and here is the topic (pretty old), where I fused my Atmega to silence: http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&t=38442

You should use some USB-ISP programmer, they work most reliable (instead of the RS232 ones). You can get those pretty cheap e.g. here:http://shop.mikrocontroller.net/index.php?VID=IaZ04BdWb24W5Q1V or in many other places. The important point is that they *should* be compatible to AVRstudio (example AVR STK500 compatible) so you can use it directly out of AVR studio.

Anyhow many other programmers will work also. If you want to stick to the RS232 version (works, but anyhow, you´ll need a COM port on your PC, *without* USB-adapter in between), this here worked out well for me: http://rumil.de/hardware/avrisp.html But do use a 74HCT244 instead of the suggested 74HC244, this will be more reliable.

Good luck & greetz!

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That's all well and good. But I presently do not have any chips, and do not really want to purchase a programmer (I only want a 1-bit synthesizer!). So unless there's one made for PICs (which I DO have a burner) I'd rather buy a pre-burned chip from elsewhere.

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Hmm, ok, that´s some point. So, where do you come from and so on? You don´t wanna ship the chips from one side of the world to the other, do you?  ;)

Perhaps it would even be better if the one (e.g. me or whoever) would burn you an Atmega which "the one" already got so you save posting fees one time (those Atmegas don´t cost anything anymore). Depends what the posting fees will be.

Greetz!

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Indeed, I'm in Montreal Canada. I hope there's someone. :-\

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If not, I´ll get some Atmega you need from Reichelt, programm it and send it to you, if you would like it that way. Anyhow, also ask in other forums (which are more AVR - specific), as e.g. here: www.avrfreaks.net There should be tons of people out of Canada (I hope) ,who can do the same for less postage fee.

Greetz!

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