At the beginning of this sketch, the variablesensorPinis set to to analog pin 0, where your potentiometer is attached, andledPinis set to digital pin 13. You'll also create another variable,sensorValueto store the values read from your sensor. 在代码的开始,变量传感器针 sensorPin 被设置为...
{ m=analogRead(A0);// read analog values from pin A0 across capacitor n=(m* .304177);// converts analog value(x) into input ac supply value using this formula ( explained in woeking section) Serial.print(" analaog input " ) ; // specify name to the corresponding value to be print...
2、读取模拟电压 - Read Analog Voltage Reads an analog input and prints the voltage to the Serial Monitor. 读取模拟输入并打印电压值到串口监视器。 This example shows you how to read an analog input on analog pin 0, convert the values from analogRead() into voltage, and print it out to the...
16 on the Mega), 10-bit analog to digital converter. This means that it will map input voltages between 0 and 5 volts into integer values between 0 and 1023. This yields a resolution between readings of: 5 volts / 1024 units or, .0049 volts (4.9...
int val = 0; // variable to store the read value void setup() { pinMode(ledPin, OUTPUT); // sets the pin as output } void loop() { val = analogRead(analogPin); // read the input pin analogWrite(ledPin, val / 4); // analogRead values go from 0 to 1023, analogWrite values ...
读取模拟电压（Read Analog Voltage）本示例展示了如何读取模拟输入0脚的模拟信号，将来自analogRead()的值...
If the analog input pin is not connected to anything, the value returned by analogRead() will fluctuate based on a number of factors (e.g. the values of the other analog inputs, how close your hand is to the board, etc.). 如果模拟输入引脚没有连接到任何地方,analogRead()的返回值也会因...
values[i]=analogRead( 0); i=( i+1)%10;//取模运算 } 提示 模运算符对浮点数不起作用。14 5.1 ==(等于) 五、比较运算符 if(条件判断语句)和、!=、<、>(比较运算符) if 语句与比较运算符一起用于检测某个条件是否达成,如某输入值是否在特定值之上 ...
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 (...
示例名称为 AnalogReadSerial，专注于串口模拟读取。该示例从针脚 0 读取模拟输入，并将结果打印到串口监视器。若未连接开发板，执行代码会报错。正确连接电位器至针脚 A0，外侧针脚至 +5V 和接地，便能完成示例的硬件搭建。代码示例位于公共域。示例代码分为设置函数（setup）和循环函数（loop）两部分。在...