IoT Starter Kit

6 real labs. Real hardware. Real code. From your first GPIO blink to a working WiFi home security system — everything included.

Explore the 6 Labs Buy Now — ₹1,999

Labs

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The 6 Labs

Each lab builds on the last. Click a lab to explore it.

LAB 01

System Status Indicator

Wire up 5 LEDs in different colours and write code to blink them in patterns that represent system status codes. You learn how to configure GPIO pins as outputs, use digitalWrite(), control timing with delay(), and build basic control logic — the foundation of all embedded firmware.

What you'll learn

GPIO OutputdigitalWrite() delay()Control LogicLED Circuits

Components used

ESP32-S3LEDs ×5 220Ω ResistorsBreadboardJumper Wires

// Lab 1 — System Status Indicator
int redLED    = 2;
int greenLED  = 4;
int yellowLED = 5;
 
void setup() {
  pinMode(redLED, OUTPUT);
  pinMode(greenLED, OUTPUT);
  pinMode(yellowLED, OUTPUT);
}
 
void loop() {
  digitalWrite(greenLED, HIGH);  // System OK
  delay(1000);
  digitalWrite(greenLED, LOW);
  delay(500);
} 
                        

LAB 02

Motion Activated Light

Wire up the PIR motion sensor (HC-SR501) and write code that reads its digital output. When motion is detected, the LED turns on automatically and switches off after a configurable delay. You learn GPIO input reading, event-driven programming, and how real-world sensors work.

What you'll learn

GPIO InputdigitalRead() PIR SensorEvent LogicDebouncing

Components used

ESP32-S3PIR HC-SR501 LED220Ω ResistorJumper Wires

// Lab 2 — Motion Activated Light
int pirPin = 14;  // PIR sensor output
int ledPin = 2;   // Indicator LED
 
void setup() {
  pinMode(pirPin, INPUT);
  pinMode(ledPin, OUTPUT);
}
 
void loop() {
  if (digitalRead(pirPin) == HIGH) {
    digitalWrite(ledPin, HIGH);  // Motion!
    delay(5000);  // Stay on 5s
  } else {
    digitalWrite(ledPin, LOW);
  }
} 
                        

LAB 03

Room Weather Monitor

Connect the DHT11 sensor and write code to read live temperature (°C) and humidity (%) data, displaying it on the Serial Monitor in real time. You learn sensor communication protocols, library usage, data parsing, and formatted serial output — the core of environmental IoT.

What you'll learn

DHT11 ProtocolLibrary Usage Data ParsingSerial MonitorSensor Reading

Components used

ESP32-S3DHT11 Sensor 10kΩ ResistorBreadboardJumper Wires

// Lab 3 — Room Weather Monitor
#include <DHT.h>
 
DHT dht(15, DHT11);  // Pin 15
 
void setup() {
  Serial.begin(115200);
  dht.begin();
}
 
void loop() {
  float temp = dht.readTemperature();
  float humi = dht.readHumidity();
  Serial.print("Temp: ");
  Serial.print(temp);
  Serial.print("°C  Humi: ");
  Serial.println(humi);
  delay(2000);
} 
                        

LAB 04

Smart Power Switch

Wire up the 5V relay module safely and write code to control it from the ESP32-S3. You learn active LOW logic, safe relay wiring, how to switch external loads, and how automation systems are built using relay-controlled devices.

What you'll learn

5V Relay ModuleActive LOW Logic Safe SwitchingLoad ControlAutomation

Components used

ESP32-S35V Relay Module LEDJumper Wires

// Lab 4 — Smart Power Switch
int relayPin = 26;  // Relay IN pin
 
void setup() {
  pinMode(relayPin, OUTPUT);
  // Active LOW: HIGH = OFF, LOW = ON
  digitalWrite(relayPin, HIGH); // Start OFF
}
 
void loop() {
  digitalWrite(relayPin, LOW);   // Relay ON
  delay(3000);                    // 3 seconds
  digitalWrite(relayPin, HIGH);  // Relay OFF
  delay(3000);
} 
                        

LAB 05

WiFi Control Panel

Connect the ESP32-S3 to your WiFi and build a web server that serves a control panel to any phone browser on the same network. Turn the LED on and off remotely. You learn WiFi connection, HTTP server setup, HTML serving, and browser-device communication — this is real IoT.

What you'll learn

WiFi ConnectHTTP Server HTML ServingGET RoutesBrowser Control

Components used

ESP32-S3LED 220Ω ResistorYour Phone / Browser

// Lab 5 — WiFi Control Panel
#include <WiFi.h>
#include <WebServer.h>
 
const char* ssid = "YourWiFi";
const char* pass = "YourPassword";
WebServer server(80);
 
void setup() {
  WiFi.begin(ssid, pass);
  server.on("/", handleRoot);
  server.begin();
}
void loop() {
  server.handleClient();
} 
                        

LAB 06

Home Security Alert System

The final lab combines everything. PIR detects motion, buzzer sounds the alarm, LED flashes, relay can trigger an external device, and a notification appears in your browser — all simultaneously. This is your complete IoT portfolio project. All 6 labs in one working system.

What you'll learn

Full IntegrationMulti-sensor WiFi AlertsReal-time EventsIoT System

All components used

ESP32-S3PIR Sensor Passive Buzzer5V RelayLEDWiFi

// Lab 6 — Home Security Alert System
// Combines Labs 1–5 into one system
 
int pirPin    = 5;   // PIR sensor
int ledPin    = 2;   // Alarm LED
int buzzerPin = 18;  // Passive buzzer
int relayPin  = 26;  // Relay module
 
void loop() {
  if (digitalRead(pirPin) == HIGH) {
    digitalWrite(ledPin, HIGH);
    tone(buzzerPin, 1000);
    Serial.println("ALERT: Motion!");
    sendWiFiAlert(); // Notify browser
  }
} 
                        

What's in the Box

13 production-grade components. Nothing extra to buy.

ESP32-S3 Dev Board

×1 · WiFi + Bluetooth

Mini Breadboard

×1 · 400 points

Jumper Wires M-M

×40 pieces

Jumper Wires M-F

×20 pieces

LEDs — 5 Colours

×15 · R/G/Y/B/W

220Ω Resistors

×20

10kΩ Resistors

×10

PIR Motion Sensor

×1 · HC-SR501

DHT11 Sensor

×1 · Temp + Humidity

5V Relay Module

×1 · 1-channel

Passive Buzzer

×1

USB-C Cable

×1 · 1 metre

Step-by-Step Lab Manual

×1 · Full code, wiring diagrams & explanations for all 6 labs

Available Now

ESP32-S3
IoT Starter Kit

Race to Build Embedded Systems — 6 labs, all hardware, complete lab manual.

^₹1,999

✓ All 13 components included · Free shipping across India

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Kit Specifications

Main Board	ESP32-S3 DevKit
Connectivity	WiFi 2.4GHz + BT 5.0
Labs Included	6 + Final System
Difficulty	Beginner → Intermediate
Age Group	12 years +
Platform	Arduino IDE (free)
Guide	Full Lab Manual (physical)
Box Size	220 × 160 × 90 mm
Origin	Made in India

IoT Starter Kit

The 6 Labs

System Status Indicator

Motion Activated Light

Room Weather Monitor

Smart Power Switch

WiFi Control Panel

Home Security Alert System

What's in the Box

ESP32-S3IoT Starter Kit

Kit Specifications

ESP32-S3
IoT Starter Kit