Arduino Uno R3 Board Pin Diagram. In this experiment 5v is adopted so the minimum resistance of the current limiting resistor should be 5 v to 1 8 v 20 160 ohm. The 220ohm offered in the kit is suitable.
To support the microcontroller. In our last two posts we focused on the software aspects of the arduino. Arduino nano arduino pro mini arduino mega arduino due arduino leonardo.
Arduino uno rev3 schematic diagram.
When you connect your arduino uno board to your computer and communicate via the serial library well you are using uart. Other arduino uno r3 parts input and output each of the 14 digital pins on the uno can be used as an input or output using pinmode digitalwrite and digitalread functions. This is a bidirectional communication. For details on how to use these pins see arduino port manipulation.
