ESP32-C3 Supermini Dev Board – 0.42" OLED, WiFi & BT 5.0
ESP32-C3 Supermini Dev Board – 0.42" OLED, WiFi & BT 5.0
ESP32-C3 Supermini Development Board with 0.42" OLED Display
Take your IoT and embedded projects to the next level with this compact ESP32-C3 Supermini Development Board. Powered by a RISC-V architecture microcontroller, it combines 2.4 GHz Wi-Fi (802.11b/g/n) and Bluetooth 5.0 connectivity with a built-in 0.42-inch OLED display — all in a tiny, breadboard-friendly form factor. Whether you're building smart home devices, wearables, or connected sensors, this board delivers serious capability in a minimal footprint.
Key Features
- Wireless Connectivity: Wi-Fi 802.11b/g/n (2.4 GHz) + Bluetooth 5.0 (BLE)
- Built-in 0.42" OLED Display: View sensor data, status messages, or custom UI directly on the board
- Ceramic Antenna: Reliable RF performance for stable wireless communication
- RISC-V Architecture: Modern, efficient processor core via the ESP32-C3 chipset
- 4MB SPI Flash: Ample onboard storage for your firmware and data
- Rich Pin Interfaces: 1×I2C, 1×SPI, 2×UART, 11×GPIO (PWM), 4×ADC
- Onboard Blue LED: Mapped to GPIO8 for easy status indication
- Type-C USB Interface: Modern, reversible connection for power and programming
- Reset & Boot Buttons: Convenient onboard controls for development workflow
- Compatible Environments: Works with Arduino IDE and MicroPython
- Metal construction for durability
Ideal Applications
- IoT sensor nodes and smart home automation
- Wearable electronics prototypes
- Wireless data logging and monitoring
- DIY electronics and maker projects
- Educational microcontroller development
Technical Specifications
| Chip | ESP32-C3 (RISC-V) |
| Wi-Fi | 802.11b/g/n, 2.4 GHz |
| Bluetooth | Bluetooth 5.0 (BLE) |
| Flash | 4MB SPI Flash (built-in) |
| Display | 0.42" OLED Module |
| Antenna | Ceramic Antenna |
| GPIO | 11× (with PWM) |
| ADC | 4× |
| UART | 2× |
| I2C / SPI | 1× each |
| USB | Type-C |
| Battery | Not included |
| Package Contents | 1× Set (board + OLED module) |
| Country of Origin | Made in Mainland China |
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Frequently Asked Questions
Q: Is the ESP32-C3 Supermini Development Board compatible with Arduino IDE?
A: Yes! The ESP32-C3 board is fully compatible with the Arduino IDE as well as MicroPython, making it accessible for both beginners and experienced developers. Simply add the ESP32 board package to your Arduino IDE and you're ready to start coding.
Q: Does the 0.42-inch OLED display come pre-soldered on the board?
A: The package includes the ESP32-C3 Supermini board and the 0.42-inch OLED module as a set. Please refer to the product images for assembly details, as configurations may vary slightly.
Q: What wireless protocols does this development board support?
A: This board supports Wi-Fi 802.11b/g/n at 2.4 GHz and Bluetooth 5.0 (BLE), enabling a wide range of wireless IoT and connected device applications right out of the box.
Q: What USB type does this board use for programming and power?
A: The ESP32-C3 Supermini uses a modern Type-C USB interface for both power delivery and programming, making it easy to connect with most contemporary laptops and chargers.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.