In our third week lab we studied about Arduino Uno. The Arduino Uno is an open-source microcontroller board based on the Microchip ATmega328P microcontroller (MCU) and developed by Arduino.cc and initially released in 2010. The microcontroller board is equipped with sets of digital and analog input/output (I/O) pins that may be interfaced to various expansion boards (shields) and other circuits. To run the code or to do test we need some hardware components like - Arduino Uno - Breadboards - Wires - USB Cable - Transducers The Arduino Uno consists of USB port to computer, reset button, clock, microcontroller, inputs and outputs. The first test was "Blink test" where we have to connect wires to uno and have to run some codes to test whether it becomes successful or not. How it works -First we have to connect arduino uno with computer by USB, -Then connect black, white and red wires in arduino uno and breadboards, -Connect red wire in A5 in arduino uno and 30e in breadboard,...