Arduino Uno is a complete development board of microcontroller ATmega328. It is most commonly used Arduino because of compact size, a number of input-output pins, price, availability etc. It has 14 Digital input-output pins in which 6 pins provide PWM outputs and 6 Analog output pins. It has everything that a general Arduino based project needs.
Basics Components on Arduino Uno Board:
- 14 Digital and 6 Analog output pins
- A crystal oscillator of 16 MHz to provide the 16MHz clock speed
- To power, it has a USB connection and a power jack
- ICSP header and
- A reset button to upload new or reload the programme