[Arduino]寫字機

寫字機的機構是參考在畫harmonograph(諧和圖形)的機器來構思的

http://www.youtube.com/watch?v=dPZ-Mpbn37U&feature=related

目前使用兩個可變電阻個別控制一個伺服馬達

繪圖範圍是這個類似扇形的形狀

Arduino程式碼如下:

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#include  

Servo myservo;  // create servo object to control a servo 

Servo myservo1;

int potpin = 0,potpin1=1;  // analog pin used to connect the potentiometer

int val,val1;    // variable to read the value from the analog pin 



void setup() 

{ 

  myservo.attach(9);  // attaches the servo on pin 9 to the servo object 

  myservo1.attach(10);

} 

void loop() 

{ 

  val = analogRead(potpin);            // reads the value of the potentiometer (value between 0 and 1023) 

  val = map(val, 0, 1023, 179, 0);     // scale it to use it with the servo (value between 0 and 180) 

  val1=analogRead(potpin1);

  val1=map(val1,0,1023,179,0);

  myservo.write(val);           // sets the servo position according to the scaled value 

  myservo1.write(val1);

 delay(15);                           // waits for the servo to get there 

} 

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https://gist.github.com/3736306/24b8322b4ea0544a6fcf667285a299c4483f8f92