The new generation "Beetle" microcontroller from DFRobot based on the Atmel AtMega32u4

To further make it user-friendly, it is compatible with Micro USB so that direct programming and testing is no longer a headache. Select "Arduino Leonardo (tools >board > Arduino Leonardo in Arduino IDE), the ATmega32U4 comes preburned with a bootloader that allows you to upload any new code that is applicable to Arduino Leonardo.

As a minimized version of the Arduino Leonardo, it enjoys similar powerful functionalities. The Beetle aims to solve problems of low-cost controller, ease-of-using properly, and to provide a low cost solution for DIY projects, workshops, gift projects, E-Textiles and education.

Features

• 20mm X 22mm compact size
• Direct downloading and testing via Micro USB
• V-shaped large-size gold-plated IO ports make it convenient for the user to twist wires upon, and can also be directly sewn on clothes with conductive thread.
• Two honeycomb shape gold-plated power interface
• Magic light blue soft BLINK indicator

Specification

• Microcontroller: ATmega32u4
• Clock Speed: 16 MHz
• Operating Voltage: 5V DC
• Digital I/O Pins: 10 
• PWM Channels: 4 
• Analog Input Channels: 5 
• UART: 1 
• I2C: 1 
• Micro USB: 1 
• Power Ports: 2 
• Flash Memory: 32 KB of which 4KB used by bootloader
• SRAM:  2.5 KB
• EEPROM:  1 KB

Documents

• Wiki Doc 
• Schematic