The version 1.0 of Arduino Software (IDE) and Uno board both are considered as the reference versions of Arduino, which evolved with time with new features.

Uno stands for one in Italian and this name was picked for the release of Arduino Software (IDE) 1.0. The new version includes four solder pads JP2 attached with the pins PB4 to PB7 of the USB ATmega. Know that Arduino UNO REV3 is an advanced version of Arduino UNO. The robust and clean design helps you shape your ideas into reality. Moreover, 6 analog input pins are available on the board and the clock frequency is 16MHz.Īrduino UNO is one of the most used boards from the Arduino family. It carries 14 digital I/O pins out of which 6 can be used as PWM outputs. In this post, I’ll detail the Introduction to Arduino UNO REV3.Īrduino Uno REV 3 is an Arduino board based on the microcontroller ATmega328P. Typically used to add a reset button to shields which block the one on the board.Hi Friends! Hope you’re well today. Bring this line LOW to reset the microcontroller. There are a couple of other pins on the board:ĪREF. Support TWI communication using the Wire library. Additionally, some pins have specialized functionality: By default they measure from ground to 5 volts, though is it possible to change the upper end of their range using the AREF pin and the analogReference() function.

The Uno has 6 analog inputs, labeled A0 through A5, each of which provide 10 bits of resolution (i.e. When the pin is HIGH value, the LED is on, when the pin is LOW, it’s off. There is a built-in LED connected to digital pin 13. These pins support SPI communication using the SPI library. Provide 8-bit PWM output with the analogWrite() function. See the attachInterrupt() function for details. These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. These pins are connected to the corresponding pins of the ATmega8U2 USB-to-TTL Serial chip.Įxternal Interrupts: pins 2 and 3. Used to receive (RX) and transmit (TX) TTL serial data. In addition, some pins have specialized functions: Each pin can provide or receive a maximum of 40 mA and has an internal pull-up resistor (disconnected by default) of 20-50 kOhms. Each of the 14 digital pins on the Arduino Uno can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions.

Arduino datasheet uno