// convert ADC value to voltage float Vin = 5 * sensorValue / 1023;// print out the value you read:Serial.println(Vin);delay(1); // delay in between reads for stability } 逐行分析，这段代码有如下作用：Serial.begin(9600);指示电路板与电脑之间开始9600比特每秒的串行通信 float sensorV...
如前所述,Arduino ADC输出值的范围为0到1023,Arduino最大输出电压为5v,因此我们必须将A0处的模拟输入乘以5/1024才能获得实际电压。 void loop() { int analogvalue = analogRead(A0); temp = (analogvalue * 5.0) / 1024.0; // FORMULA USED TO CONVERT THE VOLTAGE input_volt = temp / (r2/(r1+r2)...
登录后复制Serial.print(" analog input ") ;// this gives name which is “analog input” to the printed analog valueSerial.print(m);// this simply prints the input analog value 代码中指定的所需交流电压: 登录后复制Serial.print(" ac voltage ") ;// this gives name “ac voltage” to the...
// convert ADC value to voltage float Vin = 5 * sensorValue / 1023; // print out the value you read: Serial.println(Vin); delay(1); // delay in between reads for stability } 逐行分析,这段代码有如下作用: Serial.begin(9600); 指示电路板与电脑之间开始9600比特每秒的串行通信 float sensor...
float Power_Value = Voltage_Value * Current_Value;lcd.setCursor(0, 1);lcd.print("Power="); ...
#define REFER_VOLTAGE 330 /参 考电压 3.3V,数据精度乘以100保 留2位 小数 / #define CONVERT_BITS (1 << 12) /转 换位数为12位 */ static int adc_sample(int argc, charargv[]) { rt_adc_device_t adc_dev; rt_uint32_t value, vol; ...
println(val); // debug value } RPI Pico的ADC是12Bits的,使用的参考电压是3.3V,所读的值对应的电压可以参照 公式voltage=3.3*value/4096 进行计算。 上例要想用于RPI Pico,只需简单的改变 analogPin 为26、27或28即可。下面的例子调整第3讲最后一个例程,将x、y、z的值改为26、27、28脚的输入:...
ADC= (Vin*1024)/Vref re-arranging that gives: Vin = (Vref/1024)*ADC Arduino ADC resolution at 5V So for Vref=5V, an ADC value of 1 would result in a Voltage step of 4.88mV - the value of voltage for one LSB - this is the Arduino ADC resolution for a 5V Vref. ...
floatdensity,voltage; intadcvalue; /* private function */ intFilter(intm) { staticintflag_first=0,_buff[10],sum; constint_buff_max=10; inti; if(flag_first==0) { flag_first=1; for(i=0,sum=0;i<_buff_max;i++) { _buff[i]=m; ...
ipvolt = (5.0/4096.0)* adc;复制代码4. 下面的第一行代码通过在ADC变量中将4位向右移位来将...