int analogPin = 3;//使用analog in 引脚3 作为电压标记 int val = 0; // 读取到的电压值 void setup() { Serial.begin(9600); //串口传输波特率 1s传输的字节 } void loop() { val = analogRead(analogPin); // 读取输入的电压值 Serial.println(val); // 串口输出返回值 } 1. 2. 3. 4. ...
/*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 ...
int ledPin = 9; // LED connected to digital pin 9 int analogPin = 3; // potentiometer connected to analog pin 3 int val = 0; // variable to store the read value void setup() { pinMode(ledPin, OUTPUT); // sets the pin as output } void loop() { val = analogRead(analogPin)...
The analogWrite function has nothing whatsoever to do with the analog pins or the analogRead function.这个analogWrite⽅法与模拟引脚或者analogRead⽅法毫不相⼲ Syntax 语法 analogWrite(pin, value)Parameters 参数 pin: the pin to write to.pin：输出的引脚号 value: the duty cycle: between 0 (...
analogWrite(thisPin, brightness); delay(2); } // pause between LEDs: delay(100); } } [Get Code] 更多 for() analogWrite() delay() AnalogInOutSerial - 读取一个模拟输入引脚,按比例划分读数,然后用这个数据来熄灭或者点亮一个LED灯 AnalogInput - 用电位计来控制LED灯闪烁 ...
analogWrite(thisPin, brightness); delay(2); } // pause between LEDs: delay(100); } } [Get Code] 更多 for() analogWrite() delay() AnalogInOutSerial - 读取一个模拟输入引脚,按比例划分读数,然后用这个数据来熄灭或者点亮一个LED灯 AnalogInput - 用电位计来控制LED灯闪烁 ...
encoder0PinA to pin 2, encoder0PinB to pin 4 (or pin 3 see below) it doesn't matter which encoder pin you use for A or B uses Arduino pullups on A & B channel outputs turning on the pullups saves having to hook up resistors ...
analog out value:analogWrite(analogOutPin,outputValue);// print the results to the Serial Monitor:Serial.print("sensor = ");Serial.print(sensorValue);Serial.print("\t output = ");Serial.println(outputValue);// wait 2 milliseconds before the next loop for the analog-to-digital// converter...
int sensorPin = A0; // the potentiometer is connected to analog pin 0 int ledPin = 13; // the LED is connected to digital pin 13 int sensorValue; // an integer variable to store the potentiometer reading void setup() { // this function runs once when the sketch starts up ...
void setup(){ Serial.begin(115200); pinMode(PA0, INPUT_ANALOG);}void loop(){ delay(50); Serial.print("PA0="); Serial.println(analogRead(PA0));} 3）串口资源 总共3个硬件外接串口Serial1、Serial2、Serial3，一个USB虚拟串口Serial，测试代码示例：void setup(){ Serial.begin(115200...