ESP32-DevKitC Development Board — ESP32-32D/32U, WiFi + Bluetooth, IoT, Arduino IDE

ESP32-DevKitC Development Board ESP32-32D/32U, WiFi + Bluetooth, IoT, Arduino IDE

$19.32 USD

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ESP32-DevKitC Development Board - ESP32-32D/32U, WiFi + Bluetooth, IoT

The ESP32-DevKitC is Espressif's official development board for the ESP32 dual-core 240MHz SoC, featuring integrated WiFi 802.11 b/g/n and Bluetooth 4.2 / BLE. With 38 GPIO pins, multiple communication interfaces, and full support for Arduino IDE and ESP-IDF, it is the most capable and popular IoT development platform available.

Key Specifications

Parameter	Value
Module	ESP32-WROOM-32D (with PCB antenna) or 32U (with IPEX connector)
CPU	Dual-core Xtensa LX6, up to 240MHz
Flash Memory	4MB (SPI flash)
SRAM	520KB
WiFi	802.11 b/g/n (2.4GHz), WPA/WPA2
Bluetooth	Classic BT 4.2 + BLE
GPIO Pins	38 (including ADC, DAC, touch, PWM, UART, SPI, I2C)
ADC	18-channel 12-bit SAR ADC
DAC	2-channel 8-bit
USB Interface	Micro USB (CP2102 or CH340 USB-UART bridge)
Supply Voltage	5V via USB or 3.3V via 3V3 pin
Operating Temperature	-40C to +80C

ESP32 vs ESP8266 - Why Upgrade?

Feature	ESP32-DevKitC	ESP8266 NodeMCU
CPU Cores	Dual-core 240MHz	Single-core 80/160MHz
Bluetooth	Yes (BT + BLE)	No
GPIO Pins	38	17
ADC Channels	18 (12-bit)	1 (10-bit)
DAC	2-channel	None
Touch Sensors	10 capacitive	None

Why Choose ESP32-DevKitC?

Dual-Core 240MHz - Run WiFi stack on core 0, application on core 1 simultaneously
WiFi + Bluetooth - Single chip covers all wireless protocols for IoT
38 GPIO Pins - Enough for complex projects without GPIO expanders
Arduino IDE Compatible - Install ESP32 board package; use familiar Arduino syntax
Espressif Official Board - Reference design with stable power supply and USB interface

Typical Applications

WiFi-connected sensor node (temperature, humidity, air quality)
BLE beacon and proximity sensor
MQTT IoT gateway and data logger
Web server and REST API endpoint
OTA (over-the-air) firmware update system
Voice assistant and audio processing (I2S)

Getting Started

Install ESP32 board package in Arduino IDE: File > Preferences > Additional Board URLs: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json. Select board: ESP32 Dev Module. Upload speed: 921600. Connect via Micro USB.

FAQ

Q: What is the difference between ESP32-32D and ESP32-32U? ESP32-WROOM-32D has a built-in PCB antenna (no external antenna needed). ESP32-WROOM-32U has an IPEX/U.FL connector for an external antenna (better range in metal enclosures).

Q: Can ESP32-DevKitC run MicroPython? Yes - flash MicroPython firmware via esptool.py. Use Thonny IDE or uPyCraft for development.