ATTINY Fuse Recovery Programmer/Fuse Doctor V2.0

Ordering from the USA? Please send me a message.

ATtiny High Voltage Serial Fuse Programmer/ AVR Fuse Recovery Tool

Restore ATtiny Fuses in Seconds — No Computer Required!

The ATtiny High Voltage Serial Programmer is a standalone recovery tool designed to restore AVR fuse settings, regardless of their current state.

Accidentally programmed the wrong fuse values? Disabled the SPI programming interface? Set the RSTDISBL fuse? Selected incorrect clock settings? Debug Wire enabled? No problem.

Simply insert the supported ATtiny device in the correct socket, connect power, and within seconds the programmer restores the fuses back to their factory default settings.

LED indicators provide immediate feedback:

Green LED: Programming successful

Yellow LED: Programming error

It is that simple — no computer, software, USB drivers, or complicated setup required. Please watch the video here.

Recover From Common Fuse Mistakes

AVR fuse programming is powerful, but it is easy to accidentally configure a device in a way that prevents normal ISP programming.

This programmer can recover devices with issues such as:

RSTDISBL fuse accidentally programmed

SPIEN fuse disabled

Incorrect CKSEL clock fuse settings

Other incorrect fuse configurations

Once restored, the ATtiny device can be programmed again using your preferred ISP programmer and software.

Never worry about permanently losing an AVR device because of a fuse mistake again!

Preserve Your Flash and EEPROM Data

A special feature of this programmer is the ability to restore fuses while preserving your existing program memory.

To preserve the Flash and EEPROM contents:

Install jumper J1

Perform the fuse restore operation

The erase command will be skipped, allowing your existing firmware and data to remain intact.

Important Note About Lock Bits

If the device lock bits have already been programmed, the chip must be erased before the fuse restore operation can complete successfully.

In this situation:

Remove jumper J1

The erase operation will be performed

Flash and EEPROM contents will be erased during recovery

Easy Standalone Operation

No PC is required.

Simply:

Insert the ATtiny device into the programmer.

Connect the required power supply.

Start the recovery operation.

Check the LED result.

The entire process takes only seconds.

Power Supply Requirements

For reliable operation, you must use:

DC power supply greater than 14.5V

Positive center polarity

The power supply is not included in order to reduce cost and shipping weight.

Before use, it is recommended to verify your power supply voltage and polarity with a voltmeter.

Why Was This Made?

It is surprisingly easy to make a mistake while programming AVR fuses. Sometimes the fuse settings simply do not end up as expected, leaving the device unusable with a normal programmer.

I wanted a simple recovery tool that did not require:

A computer

Special software

USB drivers

Complicated programming procedures

This programmer was designed to make AVR fuse recovery quick, simple, and reliable.

Included With Purchase

ATtiny High Voltage Serial Fuse Programmer

Setup instructions

User manual download link

Please read the complete user manual before using the programmer.

Direct Technical Support

You are purchasing directly from the original designer, not a reseller.

If you have questions or encounter an ATtiny device that is difficult to program, you will receive direct technical support. I provide quick, honest responses and will do my best to help you successfully recover and program your AVR devices.

Thank you for considering the ATtiny High Voltage Serial Fuse Programmer.

Supported Devices for ATTiny Fuse Restore Programmer

All International Orders will be shipped on Fridays as long as the order is received by Friday at 9 AM Eastern time.