# echavet/MitsubishiCN105ESPHome

ESPHome firmware inspired by GeoffDavis’s esphome-mitsubishiheatpump, directly integrating the SwiCago library within its codebase.

Repository: https://github.com/echavet/MitsubishiCN105ESPHome
Canonical: https://ross.abutalabs.com/products/mitsubishicn105esphome
Language: C++
License Family: other
Last push: 2026-08-24T09:51:01+00:00

## Health v2 (maintenance only)
Score: 87/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 82, longevity 71
- inputs: {"age_days": 998, "days_push": 9, "days_rel": 123, "gap_med": 6.0, "n_releases_24m": 19}
- 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 1080, forks 183 (observed 2026-08-28T04:03:30.513359+00:00)

## What it is
ESPHome custom component/firmware for ESP32/ESP8266 that lets a microcontroller talk to Mitsubishi heat pumps and air conditioners over the CN105 UART connector. It integrates the reverse-engineered SwiCago HeatPump protocol directly into ESPHome, enabling local control via Home Assistant, a built-in web interface, or MQTT.

## Use cases
- control a Mitsubishi heat pump locally without the vendor cloud
- integrate a Mitsubishi mini-split with Home Assistant over WiFi
- set temperature setpoints and vane direction on a CN105-equipped unit
- use a remote temperature sensor for more accurate thermostat control
- monitor compressor frequency and unit status via MQTT
- replace the official Mitsubishi WiFi adapter with a self-hosted option

## When to choose
- you own a Mitsubishi heat pump/AC with a CN105 port and want fully local, cloud-free control
- you already use Home Assistant or ESPHome and want a native climate entity
- you want finer control and remote-temperature features for comfort or energy efficiency
- you're comfortable flashing firmware and doing basic soldering/wiring

## When to avoid
- you want an officially supported, plug-and-play WiFi solution (use Mitsubishi's commercial adapter)
- your unit lacks a CN105 connector or doesn't support the reverse-engineered protocol features
- you can't or don't want to open the indoor unit and wire an ESP board
- you need guaranteed vendor support or warranty-safe modification

## Facets
- artifact type: application
- maturity: active
- function: iot, embedded, middleware, configuration-management
- domain: iot, self-hosted, hardware
- platform: iot
- tags: esphome, mitsubishi, heat-pump, hvac, cn105, home-assistant, mqtt, esp32, esp8266, smart-home, local-control, reverse-engineered-protocol, swicago, thermostat, automation, wifi, uart, c++, esp-idf

## Member repositories
- echavet/MitsubishiCN105ESPHome (main) score 87

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:30.513359+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 2026-08-30T06:51:27.670633+00:00, confidence not recorded.
  - readme: https://github.com/echavet/MitsubishiCN105ESPHome (fetched 2026-08-28T04:03:30.513359+00:00, sha da1252fdc9c3)
- Data as of 2026-08-30T08:39:29.467469+00:00.