![]() Which microcontroller is used for Arduino Uno?Īrduino Uno is a microcontroller board based on the ATmega328P (datasheet). The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). The Atmega 328 function the same like Atmega 328p but the 328p has very low power consumption using the ATMEL’s PicoPower Features. This microcontrollers are mostly used in Arduino’s. There is no major functional difference between them except for power. What is difference between ATmega328 and ATMEGA328P? The major components of Arduino UNO board are as follows: They operate at 5 volts….Smoke Detection using MQ-2 Gas Sensor. How many microcontrollers are on Arduino Uno board?Įach of the 14 digital pins on the Uno can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions. For SPI communication, use the SPI library. The Arduino Software (IDE) includes a Wire library to simplify use of the I2C bus see the documentation for details. The ATmega328 also supports I2C (TWI) and SPI communication. ![]() In the graduate class I teach at CU, Boulder, on Practical Printed Circuit Board Design, we use the venerable Arduino Uno board as an example of a 2-layer board that works but violates almost every one of the seven important habits.Ī SoftwareSerial library allows serial communication on any of the Uno’s digital pins.
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