The Arduino libraries run all processes serially, so if you want to get "high-speed," you are better off writing code that talks to bare metal. It uses C code, although the "sketch" is different i minor ways. For relatively simple things, it's not bad. I just got these SMD versions, and thought I had an issue with them, but it turns out to be an issue with the base Arduino programming IDE. Besides - when was the last time you managed to destroy an ATmega and needed to repair an Arduino board? Those things are nearly indestructible. The board is identical to the PTH version of the Uno, but you won't be able to remove the ATmega without some hot-air. To keep up with demand, we now offer the Arduino Uno R3 with an SMD ATmega. Special SMD Version: Because Atmel is moving more and more of their production capacity to surface mount ICs, the DIP packaged ATmega is becoming more and more difficult to get. The open-source IDE can be downloaded for free (currently for Mac OS X, Windows, and Linux). Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer (e.g. The Uno R3 works with all existing shields but can adapt to new shields which use these additional pins.Īrduino is an open-source physical computing platform based on a simple i/o board and a development environment that implements the Processing/ Wiring language. The other is a not connected and is reserved for future purposes. One is the IOREF that allow the shields to adapt to the voltage provided from the board. In addition, there are two new pins placed near the RESET pin. The Uno R3 also adds SDA and SCL pins next to the AREF. Never fear for accidental electrical discharge, either since since the Uno R3 SMD also includes a plastic base plate to protect it! No drivers needed for Linux or Mac (inf file for Windows is needed and included in the Arduino IDE), and the ability to have the Uno show up as a keyboard, mouse, joystick, etc. This allows for faster transfer rates and more memory.
In addition to all the features of the previous board, the Uno now uses an ATmega16U2 instead of the 8U2 found on the Uno (or the FTDI found on previous generations).
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