SG90微型伺服電機按鈕Arduino自動售貨機Machie原型

Question

我已經爲我的原型再次做了我的新代碼，我的問題是： 當arduino開始運行時，三臺SG90微型伺服電機同時旋轉360度，沒有停止。當我按下圓形按鈕時，它會減慢伺服電機的旋轉速度。

當我試圖模擬我的程序123d.circuits.io，它的工作。由於沒有圓形按鈕，我使用了瞬時按鈕。

我想要實現的是：

當按鈕A/B/C被推動時，伺服電機A/B/C將旋轉360度，以分配一個項目爲我的自動售貨機的原型。

這是我的代碼。希望您能夠幫助我。

#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

您的代碼有兩個問題。

1. 正如@MikeCAT所述，代碼中的for循環是空的，因爲您在它們後面添加了一個分號。有關詳細說明，請參見Effect of semicolon after 'for' loop。

2. 在伺服引腳中不需要執行digitalWrite。爲了控制它們只需使用Servo類中的方法write。

更正代碼：

#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); 
    } 
    } 
}