Thank you for publishing this project, I am close to ordering one of this. I just want to know how to use this, I am new to HVPP and would appreciate a guide similar to this can be created https://www.instructables.com/AVR-HVPP-Configurator/

I have a bricked ATMega32U4 (Arduino Pro Micro), I get this classic error:

avrdude: error: program enable: target doesn't answer. 1
avrdude: initialization failed, rc=-1
         Double check connections and try again, or use -F to override
         this check.

I am hoping I could fix it with this. I know this would take your time, I willing to pay for this service.

(no, this isn't really an "issue.")

It happens that I have some ATtiny28 chips that I want to program.
These are only programmable via HVPP, and my STK500 doesn't seem to be working, so I looked around for something else that might be able to program it, and found your avr-hv2 project.

I based the hardware (built on a protoboard) on your project, plus the datasheet, plus some other HV programmers, and started with your firmware. I don't think that much of it is left - the ATtiny28 works somewhat differently, I didn't try to make it more general, I used an ATmega4809 board as the programmer, and I implemented a more user-oriented communications protocol, but I wanted to thank you for publishing your project, since it was definitely easier to start working with it than to start from nothing...

Should you need to program a very old HVPP chip, it might be useful to look at. It's here: https://github.com/WestfW/Duino-hacks/tree/master/hvTiny28prog

Thanks!

Hello
I programmer a atmega644p and set fuse cksel[3-0]=0001
And my arduino as isp can't detect chip again by avrdude
So can avr-hv2 solve problem or not ?
Thank you 😊 for your help

Hi,

is it possible to add the definitions for the:

• Attiny 2313a
• Attiny 4313

to the main-programm?

This both devices support HVPP and I would like to use avr-hv2 with this MCU.
The datasheet can be found here:
https://ww1.microchip.com/downloads/en/DeviceDoc/doc8246.pdf

Thank you.

In Windows OS, is it enough to type for example COM7 or specific path should be entered.
If specific path should be entered, how to get that path?