The Arduino Uno is a microcontroller board based on the ATmega328P microcontroller with a Harvard architecture and RISC architecture. It includes components like a crystal oscillator, serial communication, and voltage regulator. To use it, one connects it to a computer via USB, loads a code example in the Arduino IDE, and clicks upload to run the code and blink the onboard LED. The Raspberry Pi is a small, low-cost computer that can connect to a monitor and keyboard. It allows people of all ages to learn computing and programming languages like Scratch and Python. It can perform tasks like browsing the internet, playing videos, and digital making projects. The MPU-6050