ESP32-C3 Dev Board 0.42 OLED USB-C WiFi Bluetooth Compact IoT Module

🔧 ESP32-C3 OLED Development Board 0.42″ (Blue PCB) | AuscomTech

The ESP32-C3 OLED Development Board is a compact wireless microcontroller featuring a built-in 0.42-inch OLED display for real-time status and debugging output.

Powered by a RISC-V core, it delivers reliable WiFi and Bluetooth 5.0 connectivity, with flexible GPIO, ADC, SPI, I2C, and UART interfaces for embedded and IoT development.

Designed for developers using Arduino, MicroPython, or ESP-IDF, this board is ideal for compact builds where space is limited and quick visual feedback is essential.

⭐ Key Features

• 0.42 Inch OLED Status Display – Ideal for debugging, system status, and simple data output
• WiFi & Bluetooth 5.0 – Wireless connectivity for IoT and automation projects
• USB-C Programming – Easy power and firmware upload
• Ultra-Compact Form Factor – Perfect for space-constrained designs
• Multi-Interface GPIO – Supports I2C, SPI, UART, ADC, and PWM
• Low Power Operation – Suitable for portable and battery-powered projects
• Onboard Buttons – Reset and boot controls for development
• Header Pins Included – Ready for soldering and expansion
• Arduino & MicroPython Support – Broad ecosystem compatibility

📊 Technical Specifications

• Microcontroller: ESP32-C3 (RISC-V)
• Wireless: WiFi 802.11 b/g/n (2.4GHz), Bluetooth 5.0
• Flash Memory: 4MB
• Operating Voltage: 3.3V–6V
• Display: 0.42 inch OLED
• GPIO: 11 (PWM capable)
• ADC: 4 channels
• Interfaces: I2C, SPI, UART
• USB Port: Type-C
• Status LED: GPIO8

🧩 Typical Applications

• IoT device development
• Wireless sensor nodes
• Embedded debugging tools
• Smart home automation
• Compact control systems
• Portable electronics projects

⚠️ Important Notes

• This listing is for the blue PCB version only
• OLED is 0.42″ – suited for small text and status display only
• USB-C provides power and programming
• Do not use USB and external power simultaneously
• Compatible with Arduino IDE, MicroPython, and ESP-IDF

📦 Package Includes

• 1 × ESP32-C3 OLED Development Board 0.42″ (Blue PCB)
• Header Pins

🔗 Recommended Accessories (Not Included)

• USB-C Cable – power and programming
• Breadboard & Jumper Wires – prototyping
• 5V Power Supply Module – standalone projects
• Sensors – expand functionality