Arduino UNO r3

 Arduino UNO r3


What is Arduino 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.
PINS

Downloadable resources. Arduino UNO is a microcontroller board based on the ATmega328P. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header and a reset button.
The Arduino Uno pins compatible with PWM are the pins 3, 5, 6, 9, 10 and 11. So you have 6 pins where you can create a PWM, using the analogWrite() function
Input and Output
  • Serial: 0 (RX) and 1 (TX). Used to receive (RX) and transmit (TX) TTL serial data. ...
  • External Interrupts: 2 and 3. ...
  • PWM: 3, 5, 6, 9, 10, and 11. ...
  • SPI: 10 (SS), 11 (MOSI), 12 (MISO), 13 (SCK). ...
  • LED: 13. ...
  • TWI: A4 or SDA pin and A5 or SCL pin.

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