Typically used to add a reset button to shields which block the one on the board. 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. This board will give you a great rst experience within the world of Arduino. Buy ELEGOO Ultrasonic Sensor, HC-SR04 Ultrasonic Distance Sensor Kits for Arduino UNO MEGA R3 Raspberry Pi,Datasheet Available to Download online on.

This versatile microcontrolleris equipped with the well-known ATmega328P and the ATMega 16U2 Processor. Additionally, some pins have specialized functionality: The Arduino UNO R3 is the perfect board to get familiar with electronics and coding. 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. The Arduino UNO R3 is the third revision of the original Arduino UNO, and is the result of years of refinement from multiple. 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.

Datasheets arduino uno