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- Arduino Leonardo
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The Arduino Leonardo is a microcontroller board based on the ATmega32u4 (datasheet). 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 cable or power it with a AC-to-DC adapter or battery to get started. 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; these are detailed on the getting started page (http://arduino.cc/en/Guide/ArduinoLeonardo). Product page: http://arduino.cc/en/Main/ArduinoBoardLeonardo
Top Customer Reviews
If you're using Fedora linux, you'll run into a few problems uploading code. I just switched to an Ubuntu based distro and everything uploaded fine.
5/5 (the Fedora issue is Fedora's fault, not Arduino's) highly recommended!
Recently, however, the Arduino platform has moved towards having integrated USB compatibility built in so that - in the case of this unit at least - I can connect directly from the PC to a micro USB cable and program the unit (as well as provide it with power).
If you note on this specific model, the profile is thinner because the DC jack is not provided - as well as the huge old printer-style USB terminal. This means embedding this in a thin-profile case is much easier. It also means that you have the choice of whether to hard-wire your own power source directly to the original power jack terminals on the board. Likewise with all of your I/O terminals - either go with a fixed configuration for prototyping or hardwired configuration for a finished product.
In short this is for those slightly more familiar with the Arduino platform - I recommend start on an Uno, move on to the Leonardo, and that the Leonardo makes a great component for a finished product.