ARDUINO旋钮电位器读取错误问题

答案:2 悬赏:0 手机版

解决时间 2021-03-16 01:57

提问者网友：骨子里的高雅
2021-03-15 20:10

帮忙看下，旋钮电位器的电位数据读取没成功，求助
int dwq2 = A0;
int LED1 = 2;
int LED2 = 3;
int LED3 = 4;
int LED4 = 5;
void setup()
{
pinMode(2,OUTPUT);
pinMode(3,OUTPUT);
pinMode(4,OUTPUT);
pinMode(5,OUTPUT);
}
void loop()
{
int dwq2 = analogRead(A0);
if (80 > dwq2){digitalWrite(LED1,HIGH);digitalWrite(LED2,HIGH);digitalWrite(LED3,HIGH);digitalWrite(LED4,HIGH);}
if (160> dwq2 > 79){digitalWrite(LED1,LOW);digitalWrite(LED2,HIGH);digitalWrite(LED3,LOW);digitalWrite(LED4,LOW);}
if (224> dwq2 > 159){digitalWrite(LED1,HIGH);digitalWrite(LED2,HIGH);digitalWrite(LED3,LOW);digitalWrite(LED4,LOW);}
if (304> dwq2 > 223){digitalWrite(LED1,LOW);digitalWrite(LED2,LOW);digitalWrite(LED3,HIGH);digitalWrite(LED4,LOW);}
if (368> dwq2 > 303){digitalWrite(LED1,HIGH);digitalWrite(LED2,LOW);digitalWrite(LED3,HIGH);digitalWrite(LED4,LOW);}
if (432> dwq2 > 367){digitalWrite(LED1,LOW);digitalWrite(LED2,HIGH);digitalWrite(LED3,HIGH);digitalWrite(LED4,LOW);}
if (496> dwq2 > 431){digitalWrite(LED1,HIGH);digitalWrite(LED2,HIGH);digitalWrite(LED3,HIGH);digitalWrite(LED4,LOW);}
if (576> dwq2 > 495){digitalWrite(LED1,LOW);digitalWrite(LED2,LOW);digitalWrite(LED3,LOW);digitalWrite(LED4,HIGH);}
if (640> dwq2 > 575){digitalWrite(LED1,HIGH);digitalWrite(LED2,LOW);digitalWrite(LED3,LOW);digitalWrite(LED4,HIGH);}
if (704> dwq2 > 639){digitalWrite(LED1,LOW);digitalWrite(LED2,HIGH);digitalWrite(LED3,LOW);digitalWrite(LED4,HIGH);}
if (768> dwq2 > 703){digitalWrite(LED1,LOW);digitalWrite(LED2,LOW);digitalWrite(LED3,HIGH);digitalWrite(LED4,HIGH);}
if (832> dwq2 > 767){digitalWrite(LED1,HIGH);digitalWrite(LED2,HIGH);digitalWrite(LED3,LOW);digitalWrite(LED4,HIGH);}
if (896> dwq2 > 831){digitalWrite(LED1,HIGH);digitalWrite(LED2,LOW);digitalWrite(LED3,HIGH);digitalWrite(LED4,HIGH);}
if (960> dwq2 > 895){digitalWrite(LED1,LOW);digitalWrite(LED2,HIGH);digitalWrite(LED3,HIGH);digitalWrite(LED4,HIGH);}
if (1024> dwq2 > 959){digitalWrite(LED1,HIGH);digitalWrite(LED2,HIGH);digitalWrite(LED3,HIGH);digitalWrite(LED4,HIGH);}
}

最佳答案

五星知识达人网友：西风乍起
2021-03-15 21:19

你可以先打印旋钮的值
Serial.print(dwq2);
如果有输出，说明旋钮读取正常，如果没有，看看接线是否正确，旋钮坏了也有可能！
但是你的程序判断有个错误？
我记得我以前写代码时，这个不能这样用：160> dwq2 > 79，好像要分开来写。
现在我都习惯性的分开写，dwq2>79&&dwq2<160；
帮你写了个程序，实验了一下，果然，我没记错：
int d=1000;
void setup() {
// put your setup code here, to run once:
pinMode(13,OUTPUT);
}
void loop() {
// put your main code here, to run repeatedly:
//if (d > 959&&1024> d)
//digitalWrite(13,HIGH);
if (1024> d > 959)
digitalWrite(13,HIGH);
}
程序应该就是这个问题

全部回答

1楼网友：七十二街
2021-03-15 22:10

你要先看一下电位器输出的范围是什么再看看别人怎么说的。

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