analogWrite(analogOutPin1, 0); analogWrite(analogOutPin2, 255); delay(3000); analogWrite(analogOutPin1, 255); analogWrite(analogOutPin2, 255); delay(3000); } A0接IN1、A1接IN2。程序功能为控制电机正转3秒,反转3秒,停止3秒如此循环。
sensorValue = analogRead(analogInPin); // 读取模拟输入的值 analogRead函数读出了A0脚获取的模拟输入值,从刚才的演示中可以知道范围是0~1023。 注释:Arduino UNO的内置ADC精度是十位,用二进制表达就是十个二进制位,总信息量就是2的10次方(2^10==1024),从0开始就是0~1023了。 而我们需要电压值,所以做个...
格瑞图:Arduino-0017-内置示例-模拟输入串口输出 AnalogInOutSerial 1、示例代码及解析 (1)代码 /*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...
int analogInPin = 0; int ledpin = 12; int meanSensorValue; String f = "splash"; int sensitivity = 125; unsigned int delayTime = 25; int photoCount = 0; unsigned long lastLowTime; // last time that all readings were low boolean repeatMode = 0; int lastDisplayUpdateTime = 0; void...
analogRead(pin); 1. pin- 要读取的模拟输入引脚的编号(大多数电路板上为0至5,Mini和Nano上为0至7,Mega上为0至15) 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 ...
pinMode(A0,OUTPUT)...temp = analogRead(A0)想请问为什么将传感器输出口连接的A0设置为OUTPUT?这里不是用作数据输入吗,应该是INPUT把?不过我试了一下设置为OUTPUT和INPUT获取的数值差不多。是不是模拟口在没有Write过数据前设置IN/OUT没有差别呢?请问是什么原理。附上官网对于AnalogPin的一段话,也是要求在analog...
Center pin of the potentiometer goes to the analog pin. side pins of the potentiometer go to +5V and ground * LED connected from digital pin 9 to ground created 29 Dec. 2008 modified 9 Apr 2012 by Tom Igoe This example code is in the public domain. ...
sensorValue = analogRead(analogInPin);// 读取模拟输入值: outputValue = map(sensorValue, 0, 1023, 0, 255); // 将其映射到模拟输出的范围: 模拟写入(模拟输出引脚,输出值);// 改变模拟输出值: Serial.print("传感器 = "); // 将结果打印到串行监视器: ...
https://www.arduino.cc/en/Tutorial/BuiltInExamples/ReadAnalogVoltage */ // the setup routine runs once when you press reset: void setup() { // initialize serial communication at 9600 bits per second: Serial.begin(9600); } // the loop routine runs over and over again forever: ...
pinMode() analogRead() digitalWrite() 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 AnalogWriteMega - 用一个Arduino或者Genuino Mega开发板来使12个LED灯一个接一个逐渐打开和熄灭 Calibration - 定义期望中的模拟传感值的最大值和最小值 ...