超声波模块如何控制LED的闪烁频率以及亮度···

切猫猫

在奈何老师的帮助下通过电位器可以实现了···

const int analogInPin = A0;  // Analog input pin that the potentiometeris attached to

const int analogOutPin = 9; // Analogoutput pin that the LED is attached to

int sensorValue = 0;        // value read from the pot

int outputValue = 0;        // value output to the PWM (analogout)

void setup() {

  //initialize serial communications at 9600 bps:

Serial.begin(9600);

}

void loop()

{

sensorValue = analogRead(analogInPin);            

outputValue = map(sensorValue, 0, 1023, 0, 255);  

analogWrite(analogOutPin, outputValue);

delay(sensorValue);

analogWrite(analogOutPin, 0);

    delay(sensorValue);
}
超声波模块反馈的是一个电平 ···
如何用超声波模块替换掉电位器实现呢？？？

coloz

传送门：http://www.arduino.cn/thread-1003-1-1.html


另外不要叫老师额~~~

切猫猫

#include "SR04.h"
#define TRIG_PIN 2
#define ECHO_PIN 3
SR04 sr04 = SR04(ECHO_PIN,TRIG_PIN);
const int analogInPin = A0;  // Analog input pin that the potentiometer is attached to
const int analogOutPin = 9; // Analog output pin that the LED is attached to
int sensorValue = 0;        // value read from the pot
int outputValue = 0;        // value output to the PWM (analog out)

void setup() {
  // initialize serial communications at 9600 bps:
  Serial.begin(9600);
}
void loop()
{
  sensorValue = sr04.Distance();            
  outputValue = map(sensorValue, 0, 1023, 0, 255);  
  analogWrite(analogOutPin, outputValue);
  delay(sensorValue);
  analogWrite(analogOutPin, 0);
    delay(sensorValue);
}
实现···偶也···

奈何col

切猫猫 发表于 2012-4-24 22:10
#include "SR04.h"
#define TRIG_PIN 2
#define ECHO_PIN 3

切猫猫

哈哈 ··你懂的··哈哈····从你给的那个连接里面找到的例子  直接改的··哈哈

切猫猫

#include "SR04.h"
#define TRIG_PIN 2
#define ECHO_PIN 3
SR04 sr04 = SR04(ECHO_PIN,TRIG_PIN);
const int analogInPin = A0;  // Analog input pin that the potentiometer is attached to
const int analogOutPin = 9; // Analog output pin that the LED is attached to
int sensorValue = 0;        // value read from the pot
int outputValue = 0;        // value output to the PWM (analog out)

void setup() {
  // initialize serial communications at 9600 bps:
  Serial.begin(9600);
}
void loop()
{
  sensorValue = sr04.Distance();            
  outputValue = map(sensorValue, 0, 1023, 0, 255);
if(sensorValue<20){
analogWrite(analogOutPin, 0);
}
if(sensorValue>20)
{
analogWrite(analogOutPin, outputValue);
  delay(500);
  analogWrite(analogOutPin, 0);
delay(500);
analogWrite(analogOutPin,outputValue);
  delay(500);
  analogWrite(analogOutPin, 0);
delay(500);
analogWrite(analogOutPin, outputValue);
  delay(500);
  analogWrite(analogOutPin, 0);
    delay(sensorValue);
}
}
接着又改成了这样··哈哈 第一次写IF语句··哈哈····开心咯···