Description
ESP32-C3 OLED Development Board with 0.42 Inch OLED, WiFi & Bluetooth 5.0, 4MB Flash
The ESP32-C3 OLED Development Board is a compact and feature-rich development board based on the ESP32-C3FN4/FH4 RISC-V microcontroller. With built-in 2.4GHz WiFi, Bluetooth 5.0, 4MB Flash memory, and a 0.42-inch monochrome OLED display, it is designed for IoT development, wireless projects, automation, and smart-device prototyping. The onboard ceramic antenna provides a compact wireless solution while keeping the board small and easy to integrate into space-constrained projects. The integrated OLED display can be used to show sensor readings, system status, connection information, values, and other real-time project data.
The board provides multiple interfaces and I/O options, including GPIO, ADC, UART, I2C, SPI, and PWM, making it suitable for connecting sensors, displays, modules, actuators, and other electronic peripherals. With USB download/programming support, the ESP32-C3 OLED Development Board makes firmware development and testing convenient. Its compact 26.5 × 20 mm form factor makes it particularly suitable for wearable electronics, portable devices, wireless sensors, automation systems, and IoT prototypes.
Key Features
- ESP32-C3 RISC-V MCU: Built around the ESP32-C3FN4/FH4 chip with a 32-bit RISC-V processor.
- 2.4GHz WiFi: Supports wireless networking for IoT and connected-device applications.
- Bluetooth 5.0: Enables Bluetooth-based wireless communication with compatible devices.
- Built-In OLED Display: Includes a compact 0.42-inch monochrome OLED screen for displaying project information.
- 4MB Flash Memory: Provides storage space for firmware and application programs.
- Ceramic Antenna: Integrated compact antenna for wireless connectivity.
- Multiple Interfaces: Supports UART, I2C, SPI, ADC, GPIO, and PWM functionality.
- USB Programming: Supports convenient firmware downloading and development.
- Compact Form Factor: Measuring approximately 26.5 × 20 mm, it can fit into small electronic projects.
- IoT Ready: Suitable for smart devices, wireless sensors, automation, and connected electronics.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | ESP32-C3 OLED Development Board |
| MCU | ESP32-C3FN4/FH4 |
| CPU Architecture | RISC-V |
| Clock Frequency | Up to 160 MHz |
| Flash Memory | 4MB |
| WiFi | 2.4GHz |
| Bluetooth | Bluetooth 5.0 |
| Display | 0.42-Inch Monochrome OLED |
| Antenna | Ceramic Antenna |
| UART | 2 |
| ADC Channels | 5 |
| I2C | 1 |
| SPI | Supported |
| GPIO | Available |
| PWM | Supported |
| Programming | USB Download Support |
| Board Length | 26.50 mm |
| Board Width | 20 mm |
| Approx. Weight | 3 g |
| MCU Core | RISC-V |
| Board Type | Wireless Development Board |
Applications
- IoT development.
- Wireless sensor projects.
- Smart home automation.
- Home automation systems.
- Wearable electronics.
- Portable electronic devices.
- Bluetooth projects.
- WiFi-enabled projects.
- Sensor monitoring systems.
- Robotics projects.
- Industrial automation prototypes.
- Data monitoring and display projects.
- ESP32-C3 prototyping.
- DIY electronics projects.
- Smart device development.
Precautions
- Use the board only with a suitable and regulated power source.
- Avoid applying voltage beyond the board's specified operating limits.
- Handle the OLED display carefully to prevent physical damage.
- Avoid short-circuiting GPIO, power, and communication pins.
- Ensure correct wiring before connecting external sensors or modules.
- Do not expose the board to water, excessive humidity, or conductive contaminants.
- Avoid static discharge when handling the development board.
- Use appropriate logic levels when connecting external peripherals.
- Disconnect power before modifying or rewiring the circuit.
- Keep the antenna area clear of large metal objects where possible for better wireless performance.