SKU Details
SKU000016
Homemade ATtiny85 high-voltage fuse resetter
Locations
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Properties
name
Homemade ATtiny85 high-voltage fuse resetter
Description
Homemade ATtiny85 fuse rescue / high-voltage serial programming (HVSP) gadget built on brown perfboard, with a green lever-operated ZIF socket, yellow and orange point-to-point wiring, resistors, and an eight-pin IC. Physical construction is visible in the owner's shared photo.
Intended purpose, as recalled by the owner: restore the ATtiny85 reset-pin fuse configuration after RESET has been repurposed as GPIO, allowing ordinary ISP programming again. The owner recalls that powering the gadget initiates the recovery automatically; its firmware and exact operating sequence have not been verified.
The ATtiny85 supports high-voltage serial programming using approximately 12 V on RESET together with programming commands to rewrite fuse settings. This explains the reported function; it does not establish this homemade board's required input supply voltage, socket orientation, exact supported devices, or erase/preservation behavior.
Technical background: Microchip ATtiny25/45/85 datasheet, section 20.7: https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-2586-AVR-8-bit-Microcontroller-ATtiny25-ATtiny45-ATtiny85_Datasheet.pdf
Derived Batches
- BAT000016Homemade ATtiny85 high-voltage fuse resetterName from SKU