#define FREQUENCY_BANDS 14 #define SCREEN_WIDTH 128 #define SCREEN_HEIGHT 32 #define BARWIDTH 11 #define BARS 11 #define ANALOG_PIN A0 #define OLED_RESET -1 // 重置引脚 #(如果共享 Arduino 重置引脚,则为 -1) Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET); doub...
/*Analog InputDemonstrates analog input by reading an analog sensor on analog pin 0 andturning on and off a light emittingdiode(LED) connected to digital pin 13.The amount of time the LED will be on and off depends on the value obtainedby analogRead().The circuit:- potentiometercenter pin ...
#define SCREEN_WIDTH 128 #define SCREEN_HEIGHT 32 #define BARWIDTH 11 #define BARS 11 #define ANALOG_PIN A0 #define OLED_RESET -1 // 重置引脚 #(如果共享 Arduino 重置引脚,则为 -1) Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET); double vImag[SAMPLES]; double ...
LOW当中断所在 Pin 口处于低电平时触发 CHANGE当中断所在 Pin口电平改变时触发 RISING当中断所在Pin口从低电平变为高电平(上升沿)时触发 FALLING当中断所在Pin口从高电平变为低电平(下降沿)时触发 对于Due,Zero 和 MKR1000开发板,还有一个HIGH表示当中断所在 Pin 口处于高电平时触发 int pin = 2; //define i...
int analogPin = 3; float sensorValue; int val; void setup() { Serial.begin(9600); } void loop() { sensorValue = analogRead(analogPin); Serial.println(); Serial.println(sensorValue); val= map(sensorValue,0,1023,0,99); Serial.println(val); ...
#define SCREEN_WIDTH 128 #define SCREEN_HEIGHT 32 #define BARWIDTH 11 #define BARS 11 #define ANALOG_PIN A0 #define OLED_RESET -1 // 重置引脚 #(如果共享 Arduino 重置引脚,则为 -1) Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET); ...
int IRpin = 0; // analog pin for reading the IR sensor void setup() { Serial.begin(9600); // start the serial port } void loop() { float volts = analogRead(IRpin) * 0.0048828125; // value from sensor * (5/1024) - if running 3.3.volts then change 5 to 3.3 ...
Arduino Analog Pins There are six pins on the Arduino Uno (shown below A0 ~ A5) that can be selected for an ADC measurement; A multiplexor feeds one of the six analogue input pins into the ADC. Use the function: analogRead(pin)
int analog_val = analogRead(pin_ao); // 读取模拟信号(电阻) int digital_val = digitalRead(pin_do); //读取数字信号 //打印模拟信号和数字信号 Serial.println("模拟信号输出: " + (String)analog_val + "; 数字信号输出: " + (String)digital_val); ...
sensorValue = 0;//电位计电压值int outputValue = 0;//模拟量输出值（PWM）void setup() {// 串口初始化Serial.begin(9600);}void loop() {// 读模拟量值sensorValue = analogRead(A0);//变换数据空间outputValue = map(sensorValue, 0, 1023, 0, 255);//输出对应的PWM值analogWrite(analogOutPin,...