Arduino Leonardo Board (ATmega32u4, 20 I/O Pins, 16 MHz)

The Arduino Leonardo is a microcontroller board based on the ATmega32u4. It features 20 digital I/O pins, including 7 PWM outputs and 12 analog inputs. With its 16 MHz quartz oscillator, it offers built-in USB communication, allowing a connected computer to recognize it as a mouse and keyboard, plus a virtual serial/COM port. Key specs include: ATmega32u4 microcontroller, 5V operating voltage, 7-12V recommended input, 6-20V input limits, 40mA per I/O pin, 50mA for 3.3V pins, 32KB flash memory, 2.5KB SRAM, 1KB EEPROM, and a 16MHz clock speed. Weighing only 12 grams, the board measures 68.6mm x 53.3mm x 2.6mm.