ESP32-C3 0.42″ OLED Development Board

The ESP32-C3 0.42″ OLED Board is powered by the ESP32-C3 RISC-V 32-bit processor, offering stable 2.4GHz Wi-Fi and Bluetooth Low Energy (BLE 5.0) connectivity. The onboard 0.42-inch monochrome OLED display (72×40 pixels) allows real-time data visualization without needing an external screen.

This board is perfect for IoT dashboards, smart sensors, weather displays, counters, clocks, and debugging output. With native USB-Type-C, it supports easy programming via Arduino IDE, ESP-IDF, and MicroPython. Its low-power capability makes it suitable for battery-powered projects.

The compact design, integrated display, and modern RISC-V architecture make this board an excellent choice for both beginners and advanced developers.

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🔹 Key Features

ESP32-C3 RISC-V 32-bit processor

Built-in 0.42″ OLED display (SSD1306)

Display Resolution: 72 × 40 pixels

Wi-Fi: 2.4GHz 802.11 b/g/n

Bluetooth: BLE 5.0

USB Type-C for power & programming

Low power consumption

Supports Arduino IDE, ESP-IDF & MicroPython

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🔹 Specifications

Parameter    Details

MCU    ESP32-C3
CPU Architecture    RISC-V 32-bit
Flash Memory    4MB (typical)
OLED Size    0.42 inch
OLED Driver    SSD1306
Resolution    72×40
Interface    I2C
Operating Voltage    3.3V
USB    Type-C

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🔹 Applications

IoT projects

Smart home devices

Mini dashboards

Sensor data display

Wi-Fi/BLE testing

Portable embedded systems