3Pcs Leonardo R3 ATmega32U4 Development Board With USB Cable For 
   
   Description:
   
   Compared to other versions of the  using a separate USB-Serial converter chip, the Leonardo innovatively uses a single-chip solution. Only with a Atmega32u4 USB communication and control. The Leonardo differs from all preceding boards in that the ATmega32u4 has built-in USB communication, eliminating the need for a secondary processor. This allows the Leonardo to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port. It also has other implications for the behavior of the board. Greatly improve the applications.  Leonardo need the new version above  IDE1.01.
   
   Specification:
   
   Microcontroller: ATmega32u4
   Operating voltage: 5V
   Input voltage(recommended): 7V - 12V
   Input voltage(limits): 6V - 20V
   Digital I / O pins: 20
   PWM channels: 7
   Analog input channels: 12
   DC current per I / O pin: 40mA
   DC current for 3.3V pin: 50mA
   Flash memory: 32KB(ATmega32u4) of which 4KB used by bootloader
   SRAM: 2.5KB(ATmega32u4)
   EEPROM: 1KB(ATmega32u4)
   Clock speed: 16MHz
   
   Package included:
   
   3 x  compatible Leonardo R3
   3 x USB cable
     
   
   
   
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