Ardunio UNO R3 The Arduino Uno R3 is a microcontroller board based on a removable, dual-inline-package (DIP) ATmega328 AVR microcontroller. It has 20 digital input/output pins (of which 6 can be used as PWM outputs and 6 can be used as analog inputs). Programs can be loaded on to it from the easy-to-use Arduino computer program. The Arduino has an extensive support community, which makes it a very easy way to get started working with embedded electronics. The R3 is the third, and latest, revision of the Arduino Uno. POWER PIN'S Reset Pin - When this pin is conneted to GND , The Arduino Restart. 3.3V - This Pin is used to power 3.3V powered sensor. Max Current : 50 mA. 5V - This Pin is used to power 5V powered sensor. Max Current : 400 mA When using on USB ; If Powered using DC Jack we can get higher. GND - This Ground of Arduino. VIN - This pin is used to give power supply to Arduino Board. Max Volt : 7V - 12V. I/O PIN'S & FUNCTION'S In ardunino there are "14...