Smart Home Setup Guide

Overview

Turn any home into a smart home with ESP32 microcontrollers and Giantronic. No subscriptions, no proprietary hubs, no monthly fees — just open hardware and a powerful platform that puts you in control.

Giantronic lets you connect everyday appliances — lights, fans, air conditioners, door locks, and more — to ESP32 boards, then manage them from a web dashboard or mobile app. Set schedules so your morning starts automatically, create scenes that adjust your entire home with one tap, and use voice commands for hands-free control.

Hardware You Need

You don't need expensive proprietary gadgets. These affordable components are all you need to get started.

Wiring Guide

Connect your ESP32 to relay modules and sensors. Always disconnect power before wiring.

Relay Module Connection

Each relay channel controls one appliance. The ESP32 sends a low/high signal to the relay's IN pin, and the relay switches the high-voltage load.

ESP32 GPIO2  ──────→  Relay IN1  (Living Room Light)
ESP32 GPIO4  ──────→  Relay IN2  (Bedroom Fan)
ESP32 GPIO5  ──────→  Relay IN3  (AC Unit)
ESP32 GND    ──────→  Relay GND
ESP32 5V     ──────→  Relay VCC (or use external 5V)

DHT22 Sensor Connection

ESP32 GPIO15 ──────→  DHT22 DATA (with 10kΩ pull-up)
ESP32 3.3V   ──────→  DHT22 VCC
ESP32 GND    ──────→  DHT22 GND

Pin Configuration

Configure each GPIO pin in the Giantronic dashboard to match your wiring setup.

Setting Up Schedules

Automate your home so it runs itself. Set it once and forget it.

1. Morning Routine — 7:00 AM

   Kitchen light ON, bedroom fan ON, AC set to 24°C. Start every day the same way without lifting a finger.

2. Day Mode — 9:00 AM

   Living room light OFF (natural light), kitchen light OFF. Save energy during daylight hours.

3. Evening Mode — 6:00 PM

   Living room light ON, bedroom fan ON, AC ON if temperature above 26°C. Comfortable evening without thinking about it.

4. Bedtime — 11:00 PM

   All lights OFF except night light at 5%. Fan ON low. AC OFF. Wind down for sleep.

Creating Scenes

Scenes let you control multiple devices with a single tap from the dashboard or mobile app.

Good Morning Scene

{
  "name": "Good Morning",
  "actions": [
    { "pin": "Living Room Light", "state": true },
    { "pin": "Kitchen Light", "state": true },
    { "pin": "Bedroom Fan", "state": true },
    { "pin": "AC Unit", "state": true }
  ]
}

Movie Night Scene

{
  "name": "Movie Night",
  "actions": [
    { "pin": "Living Room Light", "state": false },
    { "pin": "Night Light", "state": true, "level": 20 },
    { "pin": "Bedroom Fan", "state": true }
  ]
}

Leaving Home Scene

{
  "name": "Leaving Home",
  "actions": [
    { "pin": "Living Room Light", "state": false },
    { "pin": "Kitchen Light", "state": false },
    { "pin": "Bedroom Fan", "state": false },
    { "pin": "AC Unit", "state": false },
    { "pin": "Night Light", "state": false }
  ]
}

Voice Commands

Assign custom voice keywords to scenes and devices for hands-free control through any voice assistant.

{
  "keyword": "good morning",
  "turnOn": true,
  "deviceType": "scene",
  "language": "en",
  "targets": [{ "scene": "Good Morning" }]
}

Giantronic stores voice keywords that work with any assistant — Google Home, Alexa, Siri, or custom setups. The keyword triggers the associated scene or device action when detected.

Energy Tips

Monitor and reduce your home's energy consumption with Giantronic's built-in tracking.

Next Steps

Ready to set up your smart home? Here's where to go next.