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esphome

ESPHome is a system to control your ESP32, ESP8266, BK72xx, RP2040 by simple yet powerful configuration files and control them remotely through Home Automation

From the repo · “ESPHome is a system to control your ESP32, ESP8266, BK72xx, RP2040 by simple yet powerful configuration files and control them remotely through Home Automation systems.”

11,936 stars+44★ this week5,738 forksC++Install verified Sep 28Updated 10/21/2026100% free · open source
What it does

ESPHome lets you program ESP32/ESP8266 boards with a simple YAML file and expose the sensors/actuators directly to Home Assistant or any MQTT broker.

When to use it
  • •You need a low‑cost, Wi‑Fi‑enabled sensor or switch that integrates instantly with Home Assistant.
  • •You want to prototype hardware (temperature, motion, relays) without writing C++ firmware.
  • •You prefer a single source of truth (YAML) to manage multiple ESP devices at scale.
Ready-to-paste prompt
esphome run my_esp32.yaml && echo "✅ Firmware flashed – now add the 'ESPHome' integration in Home Assistant to see the new 'my_esp32' device"
Heads up: ESPHome requires Python 3.7‑3.11 and a recent version of the `esphome` package; on Windows you must install the USB driver for the ESP chip (e.g., CP210x or CH340) before flashing, otherwise `esphome run` will fail to find the device.
Saves to your device
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✅ Light setup✓ Install verified 9/28/2026

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Claude Code
mkdir -p ~/.claude/skills/esphome && curl -fsSL https://workflowstacks.com/api/skills/esphome/claude-skill -o ~/.claude/skills/esphome/SKILL.md
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Connect the whole catalog (MCP)
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How esphome works
Codeflow
Free to inspect

Esphome is a very large C++ project (~574k lines across 4562 code files, plus 720 test files). Setup is light: installs like a normal app. Reading the code is optional. Last commit this month, Other license, has a test suite.

Size
Very large codebase
~574k lines · 4562 code files · days to read — use, don't read
Setup
One-command install
Installs like a normal app. Reading the code is optional.
Runs on
Python · Docker
No API keys detected
C++ 56%Python 44%
Where to start reading
  1. 1
    README.md
    Start here — what it does and how to install it
  2. 2
    AGENTS.md
    The instructions the AI actually follows
  3. 3
    esphome/__main__.py
    Where the program starts running
  4. 4
    pyproject.toml
    Dependencies and the commands it exposes
  5. 5
    esphome/__init__.py
    Inside esphome/ — the main logic begins here
What's in each folder
esphome/Core code — the actual logic4539 files
script/Helper scripts59 files
docker/Deployment / infrastructure26 files
tests/Tests — proof it works4333 files
.github/CI / automation (GitHub Actions)47 files
.claude/Editor / agent settings2 files
.devcontainer/Editor / agent settings2 files
.vscode/Editor / agent settings1 files
READMEHas testsDocumentedCI checksDocker readyOther licenseUpdated this month
Quick Actions
Details
Creator
esphome
Language
C++
Category
devtools
Published
4/6/2018

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Featured on WorkflowStacks
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