Arduino is an open-source physical computing platform based on a simple i/o board and a development environment that implements the downloaded for free (currently for Mac OS X, Windows, and Linux)./ language. Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer (e.g. Flash, Processing, MaxMSP). The open-source IDE can be
The Leonardo is Arduino's first development board to use one microcontroller with built-in USB. Using the ATmega32U4 as its sole microcontroller allows it to be cheaper and simpler. Also, because the 32U4 is handling the USB directly, code libraries are available which allow the board to emulate a computer keyboard, mouse, and more using the USB-HID protocol!
It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB Micro-B cable or power it with a AC-to-DC adapter or battery to get started.
- ATmega32u4 Microcontroller
- Input Voltage: 7-12V
- 20 Digital I/O Pins
- 7 PWM Channels
- 12 ADCs
- 16MHz Clock Speed
- 32 KB Flash Memory
To connect the Arduino Leonardo to your computer, you'll need a Micro-B USB cable.