DFRobot Beetle – The Smallest Arduino Board
The DFRobot Beetle is the smallest Arduino-compatible board designed for compact, wearable, and space-constrained projects. Despite its tiny size, it offers full Arduino functionality, making it perfect for DIY electronics, wearable devices, micro-robots, and IoT projects. Its compact form factor allows it to fit into projects where a standard Arduino Uno would be too large.
The Beetle board is compatible with Arduino IDE, supports USB programming, and integrates essential I/O pins for sensors, LEDs, motors, and other peripherals. It’s ideal for beginners, hobbyists, and makers looking to build lightweight and portable electronics without compromising on functionality.
Key Features
Fully Arduino-compatible
Ultra-compact and lightweight design
Supports USB programming
14 digital I/O pins, 6 PWM outputs
6 analog inputs for sensor interfacing
Compatible with Arduino IDE and existing libraries
Ideal for wearable electronics, micro-robots, and IoT devices
Specifications
Microcontroller: ATmega32U4
Operating Voltage: 5V
Input Voltage (recommended): 5V via USB
Digital I/O Pins: 14 (6 PWM outputs)
Analog Input Pins: 6
Flash Memory: 32 KB (ATmega32U4) of which 4 KB used by bootloader
SRAM: 2.5 KB
EEPROM: 1 KB
Clock Speed: 16 MHz
Dimensions: 20 × 15 mm (approx.)
USB: Micro USB interface for programming
Applications
Wearable electronics and small gadgets
Micro-robotics projects
IoT devices and sensor networks
Portable electronics and DIY microcontrollers
Educational and hobbyist Arduino projects