micronucleus/micronucleus
ATTiny usb bootloader with a strong emphasis on bootloader compactness. observed · 2026-08-28
Health v2 · maintenance only
52/100
- Activity 66
- Release rhythm 8
- Longevity 100
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5092
- days_rel: n/a
- days_push: 208
- n_releases_24m: 0
Adoption not part of the score
1759 stars · 381 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Micronucleus is a compact USB bootloader for AVR ATtiny microcontrollers, built on V-USB with all configurations under 2KB. It includes a cross-platform libusb-based command-line upload tool for flashing firmware over USB.
Use cases
- upload firmware to attiny over usb
- bootloader for attiny85 digispark
- smallest usb bootloader for avr attiny
- flash arduino-compatible attiny firmware via usb
- program attiny without external programmer
- update firmware on usb attiny device
When to choose
- you need a tiny (<2KB) USB bootloader for ATtiny microcontrollers
- you want to flash firmware over USB without a dedicated programmer
- you work with Digispark-style ATtiny85 boards
When to avoid
- you use ATmega or ARM microcontrollers instead of classic ATtiny
- you need a protected bootloader section or advanced USB features
- you need high-throughput firmware uploads
Facets
cli-tool · maturity active
embedded developer-tools cli embedded-systems hardware developer-tools windows cross-platform cli embedded avr attiny bootloader v-usb firmware-upload libusb microcontroller linux macos
1 source
- readme: https://github.com/micronucleus/micronucleus · fetched 2026-08-28 · 20c7ce232c08
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| micronucleus/micronucleus | main | 52 |
For agents
markdown · JSON · MCP: product_card(name="micronucleus/micronucleus")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem