It’s a significant update. The Arduino UNO and Arduino Mega 2560 update the Duemilanove and Mega respectively. They now use an ATMega8U2 instead of an FTDI USB to serial converter chip.

The Mega sells for $65, while the Uno goes for $35. Next up? An Arduino board with built-in Ethernet and microSD. Crazy, we know. %Gallery-103287% ...

Each of the 14 digital pins on the Arduino Uno can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions. They operate at 5 volts. Each pin can provide or receive ...

There are plenty of toys and board games that can teach kids about electronics, science and how things work, but few are as effective as an Arduino ... with Uno R3, Mega 2560 and Nano V3 platforms ...

Then, chances are you already know what an Arduino is ... notice between the two boards' pinouts are that the Nano has more reset pins (two versus one on the Uno), fewer GND pins (two versus ...