# jeelabs/esp-link

esp8266 wifi-serial bridge, outbound TCP, and arduino/AVR/LPC/NXP programmer

Repository: https://github.com/jeelabs/esp-link
Canonical: https://ross.abutalabs.com/products/esp-link
Language: C
License: NOASSERTION
License Family: other
Topics: mqtt, serial, esp-8266, esp8266, esp8266mqtt, serial-bridge
Last push: 2021-07-18T23:32:05+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4127, "days_push": 1872, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3007, forks 729 (observed 2026-08-28T04:07:37.655672+00:00)

## What it is
esp-link is ESP8266 firmware that turns the module into a transparent WiFi-to-serial bridge for attached microcontrollers. It also provides outbound REST and MQTT connectivity, a built-in web server, and WiFi-based flashing of AVR and ARM microcontrollers.

## Use cases
- debug a microcontroller over wifi via a serial bridge
- flash an arduino or avr chip over the network
- send mqtt messages from an embedded device
- make rest http requests from a microcontroller
- serve a web page with data from an attached mcu
- program lpc800 arm microcontrollers over wifi

## When to choose
- you have an ESP8266 module attached to a microcontroller and want wifi connectivity
- you need remote serial access or OTA programming of AVR/ARM chips
- you want simple MQTT or REST from a uC without heavy firmware

## When to avoid
- you need a general-purpose ESP8266 application framework rather than a bridge
- you require actively maintained firmware with recent fixes
- you use ESP32 or non-ESP8266 hardware

## Facets
- artifact type: application
- maturity: maintenance
- function: networking, http-server, web-framework
- domain: iot, embedded-systems, hardware
- platform: embedded, iot
- tags: esp8266, serial-bridge, mqtt-client, firmware, ota-flashing, arduino-programmer, rest-client

## Member repositories
- jeelabs/esp-link (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:37.655672+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:30:20.925717+00:00, confidence not recorded.
  - readme: https://github.com/jeelabs/esp-link (fetched 2026-08-28T04:07:37.655672+00:00, sha a9c519053f65)
- Data as of 2026-08-30T08:39:29.467469+00:00.