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ESP32 & ESPHome

ESP32 & ESPHome Guides

Section titled “ESP32 & ESPHome Guides”

Build your own smart home devices with the ESP32 microcontroller and ESPHome. Cheap, flexible, and fully integrated with Home Assistant.

ESP32 + ESPHome + Home Assistant

Why ESP32 + ESPHome?

Section titled “Why ESP32 + ESPHome?”
AdvantageDescription
CheapESP32 boards cost ~$5-15
WirelessBuilt-in WiFi and Bluetooth
EasyESPHome uses simple YAML config
LocalDirect integration with Home Assistant
FlexibleThousands of supported sensors

🌡️ Sensors

Section titled “🌡️ Sensors”
GuideDescription
Temperature SensorDHT22/DS18B20 temperature & humidity
Motion SensorPIR sensor for presence detection
LD2410 mmWaveRadar-based presence detection

💡 Projects

Section titled “💡 Projects”
GuideDescription
LED Strip ControlAddressable RGB LED strips

Getting Started with ESPHome

Section titled “Getting Started with ESPHome”

1. Install ESPHome in Home Assistant

Section titled “1. Install ESPHome in Home Assistant”

Go to Settings → Add-ons → Add-on Store and install ESPHome.

2. Create your first device

Section titled “2. Create your first device”
  1. Open ESPHome dashboard
  2. Click + New Device
  3. Choose your ESP32 board
  4. Flash via USB the first time

3. Basic configuration

Section titled “3. Basic configuration”
esphome:
  name: my-sensor
  friendly_name: My Sensor


esp32:
  board: esp32dev


wifi:
  ssid: "YourWiFi"
  password: "YourPassword"


api:
  encryption:
    key: "your-api-key"


ota:
  platform: esphome
Section titled “Recommended Hardware”

ESP32 Boards

Section titled “ESP32 Boards”
BoardPriceNotes
ESP32-WROOM-32~$5Standard, reliable
ESP32-C3~$4Smaller, lower power
ESP32-S3~$8More GPIO, USB-C

Useful Sensors

Section titled “Useful Sensors”
SensorUsePrice
DHT22Temperature/humidity~$3
DS18B20Waterproof temperature~$2
PIR HC-SR501Motion detection~$1
LD2410mmWave presence~$5
BH1750Light level~$2

Tips

Section titled “Tips”