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ESP32-DevKitC Core Development Board – Complete Guide

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WiFi + Bluetooth Development Board

ESP32-DevKitC Core Development Board

Dual-Core 32-bit MCU with Integrated WiFi & Bluetooth

The ESP32-DevKitC puts Espressif's ESP32-WROOM-32 module - itself built around Espressif's own ESP32 system-on-chip - on a breadboard-friendly development board with an onboard USB-to-serial bridge chip that handles programming and serial monitoring without any external programmer. What sets the ESP32 apart from an 8-bit Arduino is not just raw clock speed: it is a genuine dual-core 32-bit processor with a full 2.4GHz radio and baseband built into the same silicon, so WiFi association, TCP/IP, and Bluetooth stacks can run on one core while your own sketch runs largely undisturbed on the other - this is why an ESP32 can maintain a stable WiFi connection while still bit-banging tight sensor timing, something that would badly stutter on a single-core chip trying to do both jobs in the gaps between interrupts. That same chip also exposes a genuinely rich peripheral set - true analog output (DAC) alongside the ADC, capacitive touch inputs, and enough independent I2C/SPI/UART peripherals to talk to several devices at once without software bit-banging - which is why it has become the default choice for IoT projects that have outgrown what an 8-bit Arduino can comfortably do, while remaining fully programmable from the familiar Arduino IDE as well as Espressif's native ESP-IDF or MicroPython.

Dual-Core, up to 240 MHz
CPU
WiFi + Bluetooth / BLE
Connectivity
~34 usable pins
GPIO

Key features

Dual-Core Processor

Two Xtensa LX6 cores running up to 240MHz let you dedicate one core to WiFi/Bluetooth tasks and the other to your application.

Integrated WiFi & Bluetooth

802.11 b/g/n WiFi plus Bluetooth Classic and BLE on a single chip - no separate wireless module needed.

Rich Peripheral Set

ADC, DAC, PWM, capacitive touch, I2C, SPI, UART and more, far exceeding what an 8-bit Arduino offers.

Deep Sleep Modes

Multiple low-power sleep modes bring current draw down to microamps for battery-powered IoT nodes.

Onboard USB-to-Serial

Program and debug directly over a USB cable with no external programmer required.

Multi-Framework Support

Works with the Arduino IDE, Espressif's native ESP-IDF, and MicroPython, so you can pick the tool that fits your project.

Technical specifications

Module ESP32-WROOM-32
CPU Xtensa dual-core 32-bit, up to 240 MHz
Flash Memory 4 MB (typical)
SRAM 520 KB
WiFi 802.11 b/g/n, 2.4 GHz
Bluetooth v4.2 BR/EDR + BLE
ADC 12-bit, multiple channels
Operating Voltage 3.3V logic (5V via USB/VIN, onboard regulator)
GPIO Count ~34 usable pins

Pinout

PinFunction
5V / VIN External 5V power input (or via USB)
3V3 Onboard 3.3V regulated output
GND Ground
EN Enable/reset - pull LOW to reset the chip
GPIO0 Boot mode select - hold LOW while resetting to enter flashing mode
TX0 / RX0 UART0 - used by the onboard USB-serial for programming

Applications

IoT sensor nodes reporting over WiFi Home automation hubs and smart switches Wireless data logging On-device web servers and REST APIs Bluetooth audio and remote-control projects Camera/streaming projects (with camera-equipped variants)

What's in the box

1x ESP32-DevKitC development board

Downloads

Datasheet (PDF) Pinout Diagram Getting Started Guide (Arduino IDE)
🔌
Pin Connections
1 Table
Pin Connections Table 1
BoardSensor PinConnection
ESP32(program directly, no wiring needed)connect via its own USB port
📟
ESP32-DevKitC Core Board
1 Example • C/C++ | Boards: ESP32
ESP32-DevKitC Core Board - ESP32
📄 File: esp32-devkitc_core_board_-_esp32.inoESP32
435 characters
1//ekostra.com
2//electronics store in egypt
3//+201008896258
4
5#include <WiFi.h>
6
7const char* ssid = "YOUR_WIFI_SSID";
8const char* password = "YOUR_WIFI_PASSWORD";
9
10void setup() {
11 Serial.begin(115200);
12 WiFi.begin(ssid, password);
13 Serial.print("Connecting");
14 while (WiFi.status() != WL_CONNECTED) {
15 delay(500);
16 Serial.print(".");
17 }
18 Serial.print("\nConnected, IP: ");
19 Serial.println(WiFi.localIP());
20}
21
22void loop() {
23}
This is a standalone ESP32 development board, not a peripheral you wire to another board - you program it directly (it IS the "board"). Shown here: a basic WiFi-connect sketch you'd upload to it.
All copy right for ekostra.com
If the board does not enter programming mode automatically when you click Upload, hold the BOOT button while the upload starts and release once it begins - this manually forces GPIO0 low during reset, which is the hardware signal that tells the chip's bootloader to wait for new firmware instead of running the existing one. Use a good-quality USB cable and, where possible, a USB port capable of supplying a stable 500mA or more, since WiFi transmission causes short current spikes upward of 300-500mA that a thin/long cable or an underpowered hub cannot keep up with - this is the single most common cause of random resets or brownout errors in ESP32 projects, and is very easy to mistake for a software bug. A handful of GPIOs (6-11) are wired internally to the board's SPI flash chip and must never be used for your own circuits.

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