升级了下之前的《厕所状态指示旋转牌》，更新了外观、还有电子结构和软件工作方式，

b站介绍新视频：卫生间竟然没装门？别慌，做个神器帮你搞定!【卫生间旋转指示牌】 #废柴发明# 第四弹 @hardihuang

这是第一次用单反录的第一版视频，里面有详细的制作过程：

【旋转卫生间状态指示牌】制作分享 @hardihuang

视频里都有详细介绍，这里就不过多赘述了。

规划：

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拍摄：

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剪片子：

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代码:

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#include
Servo myservo; // create servo object to control a servo
int photocellPin = 1;
int photocellReading;
int lightOnValue = 350;
int lightOffValue = 100;

int peopleState = false;

void setup() {
pinMode(2, INPUT_PULLUP);
pinMode(4, OUTPUT);
digitalWrite(4, LOW);
myservo.attach(3); // attaches the servo on GIO2 to the servo object
//Serial.begin(9600);
myservo.write(0);
}

void loop() {
int pos;
photocellReading = analogRead(photocellPin);
//Serial.println(photocellReading);
delay(100);
if(photocellReading < lightOffValue && peopleState == true){//dark peopleState = false; digitalWrite(4, LOW); //servo to 0 
myservo.attach(3);
for (pos = 180; pos >= 0; pos -= 1) { // goes from 180 degrees to 0 degrees
myservo.write(pos); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
}
myservo.detach();
}else if(photocellReading > lightOnValue && peopleState == false){//light on
peopleState = true;
digitalWrite(4, HIGH);
//servo to 180
myservo.attach(3);
for (pos = 0; pos <= 180; pos += 1) { // goes from 0 degrees to 180 degrees
// in steps of 1 degree
myservo.write(pos); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
}
myservo.detach();
}

}

 

遇到的问题：

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• servo如果在静止状态，由于某些原因一直响，刚开始以为是旋转盘太沉的过，后来查了下发现很多人都有这个问题，一般处理方法是，等servo转到预定位置后，用servo.detach()，来断掉和servo的连接，等需要旋转时，再用servo.attach(servoPin)来重新链接，换上新的代码后，不再用奇怪的响声出现了