Garage Smart Kit — ESP32 Garage Door Opener

Open your garage door from Home Assistant — no cloud required. A complete ESP32-C3 + relay kit that wires to your garage opener in about 10 minutes and talks to Home Assistant over local Wi-Fi.

What is in the box

• ESP32-C3 SuperMini development board (pre-flashed with ESPHome config)
• 2-Channel 5V relay module
• HC-SR04 ultrasonic sensor (car-present detection)
• Jumper wires (40pcs) + USB-C cable
• Step-by-step build guide + free online simulator demo

How it works

1. Unbox & check the BOM — the ESP32-C3 comes pre-flashed, do not factory-reset it.
2. Wire the relay: GPIO4 → Relay IN, 5V → VCC, GND → GND; relay output in parallel with your wall button.
3. Mount the enclosure near your opener (magnets or screws included).
4. Home Assistant auto-discovers the ESPHome node — click Configure, done.

Try it first: run this exact project in our free online simulator before you buy.