Optiboot/optiboot
Small and Fast Bootloader for Arduino and other Atmel AVR chips observed · 2026-08-28
Health v2 · maintenance only
53/100
- Activity 67
- 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 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4190
- days_rel: n/a
- days_push: 199
- n_releases_24m: 0
Adoption not part of the score
1176 stars · 413 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Optiboot is a small (512-byte) and fast bootloader for Arduino boards and Atmel/Microchip AVR microcontrollers, replacing the stock Arduino bootloader to free flash space and speed up sketch uploads. It supports a wide range of AVR chips from 8-pin ATtinys to the ATmega2560, plus newer Mega-0/Tiny-0/Tiny-1 series via optiboot_x.
Use cases
- free up extra flash space for larger Arduino sketches
- make sketch uploads to Arduino boards faster
- replace the stock bootloader on ATmega328p, ATmega168, or ATmega8 boards
- add bootloader support to non-Arduino AVR chips
- bootload ATtiny and ATmega USB-family chips like ATmega32u4
- customize bootloader baud rate, CPU frequency, or serial port
When to choose
- you need more program space or faster uploads on classic AVR Arduino boards
- you are building custom AVR hardware and need a bootloader
- you maintain an Arduino core and want to bundle Optiboot
When to avoid
- you just want to update an existing Optiboot install - use your board's Arduino core instead
- you target non-AVR boards like ESP32, SAMD, or RP2040
- you need OTA or advanced bootloader features
Facets
application · maturity active
embedded developer-tools embedded-systems hardware developer-tools embedded cross-platform bootloader arduino avr microcontroller firmware
1 source
- readme: https://github.com/Optiboot/optiboot · fetched 2026-08-28 · d7d8c5c53eaa
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| Optiboot/optiboot | main | 53 |
For agents
markdown · JSON · MCP: product_card(name="Optiboot/optiboot")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem