The HUNO USB Bootloader Programmer is a compact, plug-and-play ISP burner designed for quickly burning Arduino UNO R3 bootloaders or UNO USB-TTL firmware without using a computer or external software.
It automatically detects the connected chip model and flashes the correct bootloader content, ideal for Arduino UNO and custom AVR board manufacturing or repair.
Simply connect the HUNO to the 6-pin ICSP header on the target board (aligning the triangle mark with pin 1 / MISO), power it on, and the programmer will start automatically. A green LED indicates successful burning; a red LED signals failure.
Note: HUNO only burns bootloaders — it cannot upload Arduino sketches or user programs.
Features
No PC or software required — fully automatic operation
Supports: ATmega328P / ATmega328PB / ATmega16U2 / ATmega8U2
Burns: UNO R3 Bootloader / UNO USB-TTL firmware
6-Pin ICSP interface (MISO, MOSI, SCK, RESET, VCC, GND)
LED indicators for progress and status
On-board clock output for recovering faulty fuses (connect XTAL1 if needed)
Compact size: 33.3 × 15.5 × 7.8 mm
How to Use
Plug HUNO into the 6-pin ICSP header (pin 1 = MISO).
Power on the target board – burning starts automatically.
Wait for LED feedback – green = success, red = failure.
Compatibility
Arduino UNO R3, UNO clones, and custom AVR boards.
