Arduino Micro with Headers Documentation
The Arduino Micro is a microcontroller board based on the ATmega32U4 chip. It has 20 digital input/output pins, 7 of which can be used as PWM outputs, 12 analog input pins, and 16 megabytes of flash memory. The board comes with headers soldered on, making it easy to connect to a breadboard or other components.
Technical Specifications:
Microcontroller: ATmega32U4
Operating Voltage: 5V
Input Voltage: 7-12V
Digital I/O Pins: 20
Analog Input Pins: 12
PWM Pins: 7
Flash Memory: 16MB
The Arduino Micro has the following pinout:
Digital Pins: 0-13
Analog Pins: A0-A11
Power Pins: Vin, 5V, 3.3V, GND
Communication Pins: RX, TX, SDA, SCL
Reset Pin: RST
Example 1: Blinking an LED
In this example, we will use the Arduino Micro to blink an LED connected to digital pin 13.
```c++
const int ledPin = 13; // the number of the LED pin
void setup() {
pinMode(ledPin, OUTPUT); // set the LED pin as an output
}
void loop() {
digitalWrite(ledPin, HIGH); // turn the LED on
delay(1000); // wait for 1 second
digitalWrite(ledPin, LOW); // turn the LED off
delay(1000); // wait for 1 second
}
```
Example 2: Reading Analog Input
In this example, we will use the Arduino Micro to read an analog input from a potentiometer connected to analog pin A0.
```c++
const int potPin = A0; // the number of the potentiometer pin
void setup() {
Serial.begin(9600); // initialize serial communication
}
void loop() {
int sensorValue = analogRead(potPin); // read the value from the potentiometer
Serial.println(sensorValue); // print the value to the serial monitor
delay(100); // wait for 100 milliseconds
}
```
Example 3: Communication with I2C Device
In this example, we will use the Arduino Micro to communicate with an I2C device, such as an LCD display or a temperature sensor, connected to the SDA and SCL pins.
const int sclPin = SCL; // the number of the SCL pin
const int sdaPin = SDA; // the number of the SDA pin
void setup() {
Wire.begin(); // initialize I2C communication
}
void loop() {
Wire.beginTransmission(0x27); // transmit to device with address 0x27
Wire.write("Hello, world!"); // send a message to the device
Wire.endTransmission(); // end transmission
delay(100); // wait for 100 milliseconds
}
```
These examples demonstrate the basic functionality of the Arduino Micro with headers, including digital output, analog input, and I2C communication. The board can be used in a wide range of applications, from simple robotics to complex IoT projects.
