The Arduino Uno R3 is the most current variation after the Duemilanove with an enhanced USB user interface chip. For more details about the UNO, the R3 and exactly what the updates indicate, please examine our UNO Frequently Asked Question! When you desire to put it on a table, each Arduino bought from Adafruit still comes with 4 rubber bumpers that will assist secure the board. (Likewise keeps the Arduino from moving around.). Arduino is an open-source electronic devices prototyping platform ba...