Arduino High Voltage Serial Programmer

[Nogtail]

I have an ATtiny13 that I have been programming with a USBasp and an Arduino running ArduinoISP. I require more IO and would like to disable the reset pin to use as IO, but doing this would require a high voltage programmer.

I have seen many Arduino based high voltage fuse resetters, but that would require a two step process to program the device. Does anyone know of any Arduino/USBasp based AVR high voltage serial programmer software/hardware/tutorial?

[MickM]

Hi;
  I have never seen one, although Atmel probably make one.
I use this:
http://www.instructables.com/id/AVR-Attiny-fusebit-doctor-HVSP/?ALLSTEPS

I have it's big brother for the Mega series.
http://mdiy.pl/atmega-fusebit-doctor-hvpp/#eng
You need +13.5V DC to run it.

Mick M.