And as a result your controller stops responding. The description is similar to AVR Newer Post Older Post Home. Posted by Nazar Sliunchenko at Here’s the schematic of AVR

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Newer Post Older Post Home. Posted by Nazar Sliunchenko at proyrammer When J3 is short the frequency is 20 kHz, when open – I’ve already written about USBasp, so I’m not gonna do it again.

Like I said, it’s a universal schematic diagram. Here’s the schematic of AVR You might need the “low frequency” programming when internal oscillator of the controller the one you are about to program is set to kHz.

Check author’s site also in Russian. I’ve already told you about USBasp, it’s a great programmer, the fastest I know. The schematic and firmware has changed but driver and the rest of the description remains same check here.

I have my previous version of USBasp programmer. If you know Russian you can check here.


If you are just learning programming microcontrollers you might prorgammer up with the fuse bits. To use it with Arduino go to And then It’s got better.

PROTTOSS PROTTOSS AVR910 USB Programmer driver download and installation

But there is an easier way! You don’t even need a computer or programmer. Plug in the programmer. One guy has made a huge job.

Microcontroller-Cafe / Amazing Venture

He adopted those three firmwares for one hardware. All I’ve got to do is change some connections on the board according to the schematic of AVR and reload ar910 firmware. That’s what my next post is gonna be about. I didn’t make the PCB, why should I?

I’ve tried all three versions of firmware and all of them work very well. The description is similar to AVR And as a result your controller stops responding.

AVR ISP: AVR programmer firmware Free Download

STK is a standard Atmel protocol. There is a square wave of 1 MHz on that pin.


Jumper J3 is used progrmamer low frequency programming. So any program should support this programmer my gues. All you’ve got to do is load suitable firmware.

Prigrammer save it and use it in your projects again you need a prgrammer voltage programmer like STK Remove it after loading and place jumper J2. Your system will find a new device and will ask for a driver. Jumper J1 is used for loading firmware to this programmer through the same ISP connector.

I personally prefer this programmer because it supports more chips and works with most software. So, just build it and load one of three firmwares.