The BDD ESP32-C3 Expansion Board is a compact and versatile breakout board designed to enhance the capabilities of your ESP32-C3 SuperMini development board. It provides easy access to all key GPIO pins, along with essential peripheral interfaces including I2C, SPI, and UART, enabling faster and more reliable prototyping for Arduino, IoT, and embedded electronics projects.
With clearly labeled headers, this expansion board eliminates the need for messy breadboarding, making it simple to connect sensors, actuators, displays, and modules directly to your ESP32-C3. The board is perfect for DIY electronics projects, smart devices, and IoT applications, giving you the flexibility to explore both hardware and software functionality.
One of the standout features is its onboard lithium battery support. The board includes a PH2.0 interface for a 3.7V Li-ion or Li-Po battery, with built-in charging via USB. A green LED indicator shows the battery charging status: ON when charging and OFF when fully charged.
For flexible power supply options, the expansion board provides dual voltage outputs (VCC1 and VCC2). Both outputs default to 3.3V, but users can reconfigure them to output 3.7V by adjusting the onboard solder jumpers, allowing seamless integration with other hardware that requires slightly higher voltage.
The board's compact footprint and mounting provisions make it easy to integrate into prototypes or enclosures. It includes standard 2.54mm header spacing, 2.4mm mounting holes, and spacing compatible with typical DIY projects.
Key Features
- Full breakout for ESP32-C3 SuperMini GPIO pins
- Supports I2C, SPI, UART, and other peripheral interfaces
- Onboard lithium battery support with charging and PH2.0 connector
- Green LED indicates battery charging and completion
- Dual voltage outputs (VCC1 & VCC2), configurable between 3.3V and 3.7V
- Clearly labeled headers for easy prototyping and module connection
- Compact size: 37.3 × 23.3 × 11.7 mm with mounting holes
Specifications
- Compatible Plug-In Board: ESP32-C3 SuperMini
- Battery Type: Lithium Ion / Polymer (3.7V)
- Battery Connector Socket: 2-Pin PH 2.0 mm
- Header Pin Pitch: 2.54 mm
- Jumper Pads: Configure VCC1 & VCC2 voltage (BAT / 3V3)
- Charge LED Indicator: ON when charging, OFF when fully charged
- Female Header Pin Row Spacing: ~15.24 mm
- Board Dimensions: 37.3 × 23.3 × 11.7 mm
- Mounting Hole Diameter: 2.4 mm
- Mounting Hole Spacing: ~10 mm
This expansion board is ideal for IoT enthusiasts, hobbyists, and makers who want a clean, organized, and flexible solution to extend their ESP32-C3 SuperMini projects.
What's in the box
1 x BDD ESP32-C3 Expansion Board GPIO I2C SPI UART Breakout for Arduino IoT Projects
