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Linker Tilt module is one module of the Linker series.

It is made up of a metal ball with two touching point inside and it can detect the tile in a low cost way.

It costs much less and easier to use compared to  the gyroscope .[/vc_column_text][vc_tour][vc_tab title=”Parts List” tab_id=”1393924554-1-90″][vc_column_text]1. 1  x  [bigcommerce link=”/pcduino-v2-an-minipc-with-arduino-headers-ubuntu-android-google/” target=”_blank”]pcDuino V2[/bigcommerce] v2

2. 1  x  [bigcommerce link=”/base-shield-of-linker-kit-for-pcduino-arduino/” target=”_blank”]Linker base shield[/bigcommerce]

3. 1 x  linker kit 20cm cable

4. 1  x  Linker tilt [/vc_column_text][/vc_tab][vc_tab title=”Wiring diagram” tab_id=”1393924554-2-0″][vc_column_text]linker tilt   –  > GPIO 9 with  linker kit 20cm  cable     then  power on the pcDuino[/vc_column_text][/vc_tab][vc_tab title=”Test code” tab_id=”1393982899269-2-10″][vc_column_text]//GPIO Control  Class

package com.test;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class GPIO_Pin {

    private String modeURI = "/sys/devices/virtual/misc/gpio/mode/";
    private String statusURI = "/sys/devices/virtual/misc/gpio/pin/";
    private int pin = 0;
    public static final String HIGH = "1", LOW = "0", INPUT = "0", OUTPUT = "1", INPUT_PU = "8";

    public GPIO_Pin(int pin) {
        modeURI += "gpio" + pin;
        statusURI += "gpio" + pin;
        this.pin = pin;
    }

    public GPIO_Pin(String pin) {
        // Finalize file paths
        modeURI += "gpio" + pin;
        statusURI += "gpio" + pin;
        this.pin =Integer.parseInt(pin);
    }

    public int getPin() {
        return pin;
    }

    public void overrideURI(String uri) {
        modeURI = uri + "mode/gpio" + pin;
        statusURI = uri + "pin/gpio" + pin;
    }

    public void setMode(String mode) {
        writeToFile(getModeURI(), mode);
    }

    public void set(String state) {
        writeToFile(getStatusURI(), state);
    }

    public void setHIGH() {
        writeToFile(getStatusURI(), HIGH);
    }

    public void setLOW() {
        writeToFile(getStatusURI(), LOW);
    }

    public void setModeINPUT() {
        writeToFile(getModeURI(), INPUT);
    }

    public void setModeOUTPUT() {
        writeToFile(getModeURI(), OUTPUT);
    }

    public void setModeINPUT_PU() {
        writeToFile(getModeURI(), INPUT_PU);
    }

    public String getModeURI() {
        return modeURI;
    }

    public String getStatusURI() {
        return statusURI;
    }

    public String getPinMode() {
        try {
            BufferedReader reader = new BufferedReader(new FileReader(getModeURI()));
            String data = reader.readLine();
            reader.close();
            return data;
        } catch (IOException e) {
        }
        return "";
    }

    public String getPinStatus() {
        try {
            BufferedReader reader = new BufferedReader(new FileReader(getStatusURI()));
            String data = reader.readLine();
            reader.close();
            return data;
        } catch (IOException e) {
        }
        return "";
    }

    private void writeToFile(String URI, String data) {
        try {
            File file = new File(URI);
            file.delete();
            File newFile = new File(URI);
            newFile.createNewFile();
            FileWriter writer = new FileWriter(URI);
            writer.write(data);
            writer.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public static void main(String[] args) throws InterruptedException {
        GPIO_Pin ledpin=new GPIO_Pin(1);
        ledpin.setModeOUTPUT();
        while (true) {
            ledpin.setHIGH();
            Thread.sleep(400);
            ledpin.setLOW();
            Thread.sleep(400);
        }
    }
}

Test Code:

package com.test;

public class test {
    public static void main(String[] args) throws InterruptedException {
        // TODO Auto-generated method stub
        GPIO_Pin buttenpin=new GPIO_Pin(9);
        buttenpin.setModeINPUT();

        while (true) {
            System.out.println(buttenpin.getPinStatus()                                                                                                                        );
            Thread.sleep(4);
            }
    }

}

[/vc_column_text][/vc_tab][vc_tab title=”Test result” tab_id=”1393982900285-3-3″][vc_column_text]you can see the output at the console.

It will output 1 when there is a tile event.

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