esphomelib API & YAML Configuration Reference

esphomelib is an open-source C++ framework and declarative YAML configuration engine (esphomeyaml) for programming ESP8266 and ESP32 microcontrollers, MQTT telemetry nodes, and automated webhook pipelines.

Quick Example: Declarative Node Setup

esphomeyaml:
  name: livingroom_node
  platform: ESP32
  board: nodemcu-32s

wifi:
  ssid: "IoT-VLAN-Core"
  password: !secret wifi_password
  manual_ip:
    static_ip: 192.168.10.42
    gateway: 192.168.10.1
    subnet: 255.255.255.0

Documentation Modules

esphomeyaml Core Hub →

Complete specification for YAML-driven firmware generation, OTA updates, and native Home Assistant API integration.

Command Line Guide →

Installing the Python CLI toolchain, compiling firmware binaries, and flashing over USB UART or OTA.

WiFi & Static IP Stack →

Configuring static IPv4 addressing, fast-connect BSSID pinning, mDNS discovery, and fallback access points.

RGBWW LED PWM Channels →

5-channel cold/warm white color mixing, gamma correction tables, and MQTT JSON light transitions.

Webhook & Email Testing →

Automated end-to-end verification of IoT webhook alerts, SMTP notifications, and OTP flows in CI/CD pipelines.

Docs Search Index Auditing →

Keeping multi-version technical documentation, API references, and sitemaps indexed across search engines.