Physically, Arduino is a PCB with a large number of tracks and soldered components on it. The board is available in many versions, but they all have some common features. They usually differ in the size and type of components used (for example, a slower microprocessor or no Bluetooth interface). The key element of the Arduino Uno R3, the most popular board in the series, is an 8-bit Atmel microprocessor (ATmega328), with a maximum operating frequency of 16MHz. The device has standard USB ports that allow the board to communicate with or be powered by a computer. Power can also be supplied via a standard 5.5mm x 2.5mm or 5.5mm x 2.1mm DC power socket (with the voltage between 7V and 12V). On the top side, there is a special reset button that restarts the entire board when pressed. In addition, when looking at the device, you can easily identify a microcontroller responsible for proper communication with the computer, as well as Arduino programming connectors, signal connectors, or LEDs (both programmable and signaling ones).
Leave a Reply