Question

我再次为我的原型制作了新代码，问题是：当arduino开始运行时，三台SG90微型伺服电机同时旋转360度并且没有停止。当我按下圆形按钮时，它减慢了伺服电机的旋转速度。

当我尝试将我的程序模拟到123d.circuits.io时，它有效。我使用了瞬时按钮，因为那里没有圆形按钮。

我想要达到的目标是：

按下按钮A / B / C时，伺服电机A / B / C将旋转360度，为自动售货机原型分配物品。

这是我的代码。希望您能够帮助我。

#include <Servo.h>

const int pushButtonA = 2;
const int pushButtonB = 4;
const int pushButtonC = 7;

Servo myservoA;
Servo myservoB;
Servo myservoC;

int pos = 0;
int buttonStateA = 0;
int buttonStateB = 0;
int buttonStateC = 0;

void setup() {

  Serial.begin(9600);
  pinMode(pushButtonA, INPUT);
  pinMode(pushButtonB, INPUT);
  pinMode(pushButtonC, INPUT);

  myservoA.attach(3);
  myservoB.attach(5);
  myservoC.attach(9);
}

void loop() {

  buttonStateA = digitalRead (pushButtonA);
  buttonStateB = digitalRead (pushButtonB);
  buttonStateC = digitalRead (pushButtonC);

  if((buttonStateA == LOW) && (buttonStateB == HIGH) && (buttonStateC == HIGH)){
    digitalWrite(3, HIGH);
    for(pos = 0; pos <=360; pos++);
    myservoA.write(pos);
    delay(15);
    digitalWrite(3, HIGH);
  }
      if((buttonStateB == LOW) && (buttonStateA == HIGH) && (buttonStateC == HIGH)){
    digitalWrite(5, HIGH);
    for(pos = 0; pos <=360; pos++);
    myservoB.write(pos);
    delay(15);
    digitalWrite(5, HIGH);
  }
          if((buttonStateC == LOW) && (buttonStateB == HIGH) && (buttonStateA == HIGH)){
    digitalWrite(9, HIGH);
    for(pos = 0; pos <=360; pos++);
    myservoC.write(pos);
    delay(15);
    digitalWrite(9, HIGH);
  };
}

Answer 1

您的代码存在两个问题。

正如@MikeCAT所提到的，代码中的for循环是空的，因为你在它们之后添加了一个分号。有关进一步说明，请参阅Effect of semicolon after 'for' loop。
无需在伺服引脚中执行digitalWrite。要控制它们，只需使用 Servo 类中的方法write。

更正后的代码：

 #include <Servo.h>

const int pushButtonA = 2;
const int pushButtonB = 4;
const int pushButtonC = 7;

Servo myservoA;
Servo myservoB;
Servo myservoC;

int pos = 0;
int buttonStateA = 0;
int buttonStateB = 0;
int buttonStateC = 0;

void setup() {

  Serial.begin(9600);
  pinMode(pushButtonA, INPUT);
  pinMode(pushButtonB, INPUT);
  pinMode(pushButtonC, INPUT);

  myservoA.attach(3);
  myservoB.attach(5);
  myservoC.attach(9);
}

void loop() {

  buttonStateA = digitalRead (pushButtonA);
  buttonStateB = digitalRead (pushButtonB);
  buttonStateC = digitalRead (pushButtonC);

  if((buttonStateA == LOW) && (buttonStateB == HIGH) && (buttonStateC == HIGH)){
    for(pos = 0; pos <=360; pos++) {
       myservoA.write(pos);
       delay(15);
    }
  }

  if((buttonStateB == LOW) && (buttonStateA == HIGH) && (buttonStateC == HIGH)){
    for(pos = 0; pos <=360; pos++) {
       myservoB.write(pos);
       delay(15);
    }
  }

  if((buttonStateC == LOW) && (buttonStateB == HIGH) && (buttonStateA == HIGH)){
    for(pos = 0; pos <=360; pos++) {
       myservoC.write(pos);
       delay(15);
    }
  }
}

SG90 MIcro伺服电机按钮Arduino用于自动售货机原型

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