Features: 1. The development board has 20 digital input and output interfaces, 7 PWM interfaces, and 12 analog input interfaces. 2. Uses a dedicated USB-Serial converter chip. Features a single-chip solution with the ATmega32u4 microcontroller handling both USB communication and control functions. 3. The ATmega32u4 provides native USB support, enabling the board to emulate a USB mouse and keyboard. 4. Compatible with Arduino IDE 1.01 or later for use with Arduino Leonardo. 5. Designed for ease of use and long-term reliability. Specifications: Condition: Item Type: Development Board Controller: ATmega32u4 Working Frequency: 16 MHz Working Voltage: 5 V Input Voltage (Recommended): 7–12 V Digital I/O Interfaces: 20 PWM Channels: 7 Analog Inputs: 12 Maximum Current per 5 V Digital/Analog Pin: 40 mA Maximum Current per 3.3 V Digital/Analog Pin: 50 mA Flash Memory: 32 KB (ATmega32u4), of which 4 KB used by bootloader SRAM: 2.5 KB (ATmega32u4) EEPROM: 1 KB (ATmega32u4) Dimensions: Approx. 68.6 × 53.3 mm (2.7 × 2.1 in) Package Includes: 1 × Development Board 1 × USB Cable