Arduino Uno R3 Atmega328p Pin Diagram. It comprises 14 digit i o pins. Arduino nano arduino pro mini arduino mega arduino due arduino leonardo.
Each pin can provide sink up to 40 ma max. Pin 13 of the arduino uno is connected to the built in led. Arduino uno pinout pin diagram specifications and features in detail the arduino uno is an open source microcontroller board that is based on the microchip atmega328p for arduino uno r3 or microchip atmega4809 for arduino uno wifi r2 micro controller by atmel and was the first usb powered board developed by arduino.
The board has 14 digital i o pins six capable of pwm output 6 analog i o pins and is programmable.
The board has 14 digital i o pins six capable of pwm output 6 analog i o pins and is programmable. Using an atmega328p is same like any other microcontrollers it is also required to be programmed before use. Along with atmega328p it consists other components such as crystal oscillator serial communication voltage regulator etc. This board includes 14 digital input output pins analog inputs 6 a usb connection quartz crystal 16 mhz a power jack a usb connection resonator 16mhz a power jack an icsp header an rst button.
