DFRobot Beetle ESP32-C3
Coin-sized ESP32-C3 RISC-V IoT development board with WiFi, BLE 5.0, integrated LiPo charging, 13 GPIO pins, and USB-C in a 25x20.5mm form factor.
$7.90
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Specifications
Components
Espressif ESP32-C3 RISC-V single-core processor at 160MHz with 400KB SRAM, 4MB flash, WiFi 802.11 b/g/n, BLE 5.0, and hardware crypto acceleration.
Linear lithium battery charger with up to 400mA programmable charge current for safe LiPo/Li-Ion charging.
Bus Interfaces
GPIO Map
Overview
The DFRobot Beetle ESP32-C3 is an ultra-compact IoT development board built around the Espressif ESP32-C3 RISC-V single-core processor running at 160MHz. At just 25x20.5mm, it delivers dual-mode wireless connectivity with WiFi 802.11 b/g/n and Bluetooth 5.0 LE with Mesh support, making it one of the smallest WiFi+BLE boards available.
The board integrates a TP4057 lithium battery charger IC supporting up to 400mA charge current, enabling portable battery-powered projects. It breaks out 13 digital I/O pins including 6 ADC channels, 6 PWM channels, SPI, I2C, dual UART, I2S, and IR transmit/receive — a surprisingly rich I/O set for its tiny footprint.
Version 2.0.0 adds dedicated BOOT and RST buttons for easier programming. The board includes an 18-pin GDI display connector for direct connection to compatible TFT/OLED screens. It supports Arduino IDE, ESP-IDF, and MicroPython, making it versatile for rapid prototyping, wearable electronics, compact sensor nodes, and space-constrained IoT deployments.
Use Cases
5Compact IoT Node
Ultra-small microcontroller boards for embedding into tight spaces in IoT projects, props, cosplay, and miniature builds.
Battery Powered Sensor Node
Low-power sensor nodes running on battery for wireless data collection and monitoring.
Smart Home
Home automation devices for controlling lighting, climate, security, and appliances.
Wearable
Body-worn computing devices including smartwatches, fitness bands, and health monitors.
E-Textiles
Electronic textiles integrate circuits and microcontrollers into fabric for smart clothing, wearable sensors, and interactive garments.
Resources
Where to Buy
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