Sainsmart Uno R3 is usually a microcontroller board dependent to the ATmega328. It's got 14 digital input/output pins, 6 analog inputs, a sixteen MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It has almost everything essential to support the microcontroller. It is easy to attach it to a computer by a USB cable.

The board can function on an external supply of six to twenty volts. If supplied with considerably less than 7V,the 5V pin could provide less than five volts and the board might be unstable. If working with a lot more than 12V, the voltage regulator may perhaps overheat and hurt the board. The perfect range is seven to twelve volts.

The power pins:

VIN. The input voltage to the Arduino board when it making use of an external electric power source. It is possible to provide voltage by using of this pin.

5V. The regulated power supply to power the microcontroller as well as other elements around the board. This tends to appear either from VIN through an on-board regulator, or be equipped by USB or an additional regulated 5V source.

3V3. A 3.3 volt supply generated by the on-board regulator.

GND. Ground pins.

The Arduino Uno contains a lot of components to communicating with a computer, another Arduino, or other microcontrollers. The ATmega328 presents UART TTL (5V) serial conversation, which happens to be readily available on digital pins 0 (RX) and one (TX). An arduino ATmega8U2 on the board channels this serial communication above USB and seems like a digital comport to software program on the computer.On the other hand, on Windows, a .inf file is required. The Arduino software has a serial monitor which allows textual statistics to generally be despatched to and from the Arduino board.