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Adapter ESP32 Breakout Kit

The ESP32 Adapter Breakout Board is a compact and reliable development accessory designed for ESP-32F, ESP32, and ESP-WROOM-32 wireless modules. It simplifies prototyping and debugging by converting the module’s pins into a standard 2.54 mm layout, making it fully compatible with breadboards and Dupont jumper wires. With built-in buttons for reset and boot control, along with minimal wiring requirements, this adapter provides a convenient and efficient way to develop, test, and upload firmware to ESP32 modules.

Package Includes:

  • 1 × ESP32 Adapter Breakout Board
  • 1 × Set of Berg Connectors & Switches
36.75 AED 36.75 AED (Tax included)

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Features:

  • Compatible with ESP-32F, ESP32, and ESP-WROOM-32 modules
  • Standard 2.54 mm pin pitch for breadboard compatibility
  • Requires only 4 connections for basic operation
  • Built-in RESET and IO0 (Flash) buttons
  • Easy firmware upload with download mode support
  • Simplifies debugging and development workflow
  • Compact and easy-to-use design

Specifications:

  • Compatibility: ESP-32F / ESP32 / ESP-WROOM-32
  • Pin Pitch: 2.54 mm
  • Operating Voltage: 3.3V
  • Interface: UART (TX/RX)
  • Buttons: RESET, IO0 (Flash/Boot)
  • Form Factor: Breadboard compatible

Pinout of the Module:

The breakout board exposes key ESP32 pins for easy access and connection.

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  1. 3.3V: Power supply input
  2. GND: Ground
  3. TXD: Connect to RX of USB-to-Serial adapter
  4. RXD: Connect to TX of USB-to-Serial adapter
  5. EN: Enable pin (requires pull-up resistor)
  6. IO0: Boot mode selection (LOW for flashing)

Applications:

  • ESP32 prototyping and development
  • IoT and wireless communication projects
  • Firmware flashing and debugging
  • Embedded systems testing
  • Educational electronics projects

Circuit:

Insert the ESP32 module into the adapter and connect it to a USB-to-Serial converter using TX, RX, 3.3V, and GND. For stable operation, connect a pull-up resistor (recommended 12KΩ) between EN and 3.3V. Use the onboard IO0 and RESET buttons to control boot and flashing modes.

Connecting with the ESP32 Adapter for the First Time:

  • Mount the ESP32 module onto the adapter board and solder it.
  • Connect TX → RX and RX → TX to USB-to-Serial adapter
  • Connect 3.3V and GND
  • Add a 12KΩ pull-up resistor between EN and 3.3V
  • Press IO0 and then RESET to enter download mode
  • Upload your firmware using Arduino IDE

Code Example (ESP32 Blink):

 #define LED_PIN 2

void setup() {
pinMode(LED_PIN, OUTPUT);
}

void loop() {
digitalWrite(LED_PIN, HIGH);
delay(500);
digitalWrite(LED_PIN, LOW);
delay(500);
}

Arduino IDE Setup (ESP32):

Install Arduino IDE:

Add ESP32 Board Support:

  • Open Arduino IDE → File → Preferences
  • Add this URL:
https://dl.espressif.com/dl/package_esp32_index.json
  • Go to Tools → Board → Boards Manager
  • Search "ESP32" and install

Upload Code:

  • Select "ESP32 Dev Module"
  • Choose correct COM port
  • Hold IO0 if required, then click Upload

Important Notes:

  • Recommended pull-up resistor on EN: 4.7KΩ – 20KΩ (12KΩ typical)
  • Ensure TX/RX are cross-connected
  • Use only 3.3V power supply
  • ESP32 module is not included

Resources: