RPI-1031 Angle Sensor Four Direction Sensor (RPI-1031) [S183]

RPI-1031 Angle Sensor Four Direction Sensor (RPI-1031) [S183]

https://www.youtube.com/watch?v=supbSTUcWpw

*GitHub : https://github.com/rdiot/rdiot-s183.git

* Specs

1. Optical principle: There are one infrared LED and two photosensitive triode receiver and a cylindrical shade inside as picture.

2. The status of RPI-1031 is controlled by cylindrical shade between infrared LED and receiver.

3. AS show,infrared is blocked.So two receivers can not receive signal.So sensor's status is OFF as low level and both output low level.

4. AS show,one receiver is blocked so it can receive signal and it output low level.Otherside,another receiver's status is ON,so it output high level.

5. AS show,LED or receiver are not blocked both,so output two high level.

* Contents

- Connect

5V ----- 5V

S1 ----- D2

S2 ----- D3

GND ----- GND

' LED

TOP ----- D8

RIGHT ----- D9

BOTTOM -----  D10

LEFT ----  D11

- Key Code

//For the RPI-1031 - http://www.sparkfun.com/products/10621

int tilt_s1 = 2;

int tilt_s2 = 3;

int led_top = 8;

int led_right = 9;

int led_bottom = 10;

int led_left = 11;

void setup(){

 pinMode(tilt_s1, INPUT);

 pinMode(tilt_s2, INPUT);

 pinMode(led_top, OUTPUT);

 pinMode(led_right, OUTPUT);

 pinMode(led_bottom, OUTPUT);

 pinMode(led_left, OUTPUT);

  

 Serial.begin(9600);

}

void loop(){

  int position = getTiltPos();

  Serial.println(position);

  //top

  if(position == 0)

  {

    digitalWrite(led_top, HIGH); 

    digitalWrite(led_right, LOW);

    digitalWrite(led_bottom, LOW);

    digitalWrite(led_left, LOW);

  }

  //right

  else if(position == 2)

  {

    digitalWrite(led_top, LOW); 

    digitalWrite(led_right, HIGH);

    digitalWrite(led_bottom, LOW);

    digitalWrite(led_left, LOW);

  }

  //left

  else if(position == 1)

  {

    digitalWrite(led_top, LOW); 

    digitalWrite(led_right, LOW);

    digitalWrite(led_bottom, LOW);

    digitalWrite(led_left, HIGH);

  }

  //bottom

  else if(position == 3)

  {

    digitalWrite(led_top, LOW); 

    digitalWrite(led_right, LOW);

    digitalWrite(led_bottom, HIGH);

    digitalWrite(led_left, LOW);

  }  

  delay(200); //only here to slow down the serial output

}

int getTiltPos(){

   int s1 = digitalRead(tilt_s1);

   int s2 = digitalRead(tilt_s2);

   return (s1 << 1) | s2; //bitwise math to combine the values

}