ESP32-WROOM Module: Features, Uses, and Getting Started Guide

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If you are working on IoT, robotics, or DIY electronics projects, the ESP32-WROOM module is one of the best microcontrollers you can use. At Stemvolt, we provide high-quality ESP32-WROOM boards and accessories to help makers, students, and professionals bring their ideas to life.

In this blog, we’ll cover:

What ESP32-WROOM is
Key features and specifications
Applications in IoT & robotics
How to get started with ESP32-WROOM
A sample code to test your board

What is ESP32-WROOM?

The ESP32-WROOM is a powerful Wi-Fi and Bluetooth-enabled microcontroller module developed by Espressif Systems. It is the successor of the popular ESP8266 and comes with dual-core processing, better performance, and support for both classic Bluetooth and BLE (Bluetooth Low Energy).

It is widely used in IoT devices, smart home automation, robotics projects, wireless sensors, and wearable electronics.

Key Features of ESP32-WROOM

Dual-Core Xtensa® 32-bit LX6 Microprocessor (up to 240 MHz)
Wi-Fi 802.11 b/g/n support for wireless communication
Bluetooth 4.2 and BLE for smart device connectivity
520 KB SRAM + External Flash Support
Multiple GPIOs (General Purpose Input/Output pins)
Integrated ADC, DAC, SPI, I2C, UART, PWM
Ultra-low power consumption (ideal for battery-powered devices)
Security features like secure boot & flash encryption

Applications of ESP32-WROOM

The ESP32-WROOM is extremely versatile and can be used in:

IoT Projects – Smart home devices, wireless sensors, cloud-connected systems
Robotics – Remote-controlled robots, autonomous drones, and wireless control systems
DIY Electronics – Smart switches, temperature monitors, and wearable projects
Industrial Automation – Machine data monitoring, wireless control panels
Education & Prototyping – Perfect for students, hobbyists, and STEM labs

At Stemvolt, many of our customers use ESP32 boards in robotics kits, automation setups, and drone projects.

Getting Started with ESP32-WROOM

Step 1: Hardware Required

ESP32-WROOM Development Board
USB Cable (Micro USB / USB-C depending on the board)
Computer with Arduino IDE or VS Code + PlatformIO

Step 2: Install ESP32 Board in Arduino IDE

Open Arduino IDE → Go to File > Preferences.
In Additional Board Manager URLs, paste:

https://dl.espressif.com/dl/package_esp32_index.json
Go to Tools > Board > Board Manager → Search ESP32 → Install.

Step 3: Connect ESP32

Plug in ESP32 board via USB.
Select the correct Board: ESP32 Dev Module and COM port from Tools.

Upload Example Code

Try the classic Blink LED program.

// ESP32 Blink Example

#define LED_PIN 2 // Onboard LED is usually GPIO 2

void setup() {

pinMode(LED_PIN, OUTPUT);

}

void loop() {

digitalWrite(LED_PIN, HIGH); // Turn LED on

delay(1000); // Wait 1 second

digitalWrite(LED_PIN, LOW); // Turn LED off

delay(1000); // Wait 1 second

}

Advanced Example: Wi-Fi Web Server

With ESP32, you can create a web server and control devices from a browser.

#include <WiFi.h>

const char* ssid = “Your_SSID”;

const char* password = “Your_PASSWORD”;

WiFiServer server(80);

void setup() {

Serial.begin(115200);

WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) {

delay(1000);

Serial.println(“Connecting to WiFi…”);

}

Serial.println(“Connected to WiFi”);

server.begin();

}

void loop() {

WiFiClient client = server.available();

if (client) {

Serial.println(“New Client Connected”);

client.println(“Hello from ESP32 Web Server!”);

delay(1000);

client.stop();

}

Why Buy ESP32-WROOM from Stemvolt?

At Stemvolt.in, we provide genuine ESP32-WROOM modules and accessories at the best prices in India. Our products are:

Tested for quality and reliability
Perfect for students, hobbyists, and professionals
Delivered across India with fast shipping
Backed by STEM support for your projects

Conclusion

The ESP32-WROOM Module is a feature-rich, low-cost microcontroller ideal for IoT, robotics, and smart electronics projects. With its powerful dual-core processor, Wi-Fi + Bluetooth support, and vast community resources, it is the perfect choice for both beginners and professionals. Whether you want to make a simple LED blink project or a full-fledged home automation system, the ESP32-WROOM has you covered.

👉 Explore the ESP32-WROOM modules and DIY kits at Stemvolt.in today and take your projects to the next level!

support@stemvolt.in

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