Date : 9th -13th April 2012
My programming protocol for this project is quite simple. For the LCD that attached to the EOG box, I use voltmeter programming where the output voltage from both horizontal and vertical movement will be displayed on the LCD.
For example:
// include the library code:
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
// variables for input pin and control LED
int EOG1 = 1;
int EOG2 = 2;
float vout1 = 0.0;
float vout2 = 0.0;
// print result to lcd display
lcd.setCursor(0, 0);
lcd.print("EOG Vert=");
lcd.setCursor(10, 0);
lcd.print(vout1);
lcd.print("V");
lcd.setCursor(0, 1);
lcd.print("EOG Hori=");
lcd.setCursor(10, 1);
lcd.print(vout2);
lcd.print("V");
delay(500);
}
For wireless communication, I have set both XBee to communicate to each other, and those data transferred can be monitored in the laptop by using XCTU software.
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| XCTU Monitor |
Next, would be the programming for the mouse cursor. Part of the program is as below:
const int buttonPin = 2; //LOW on digital pin enables mouse
const int potXPin = 4; // analog pins for pots
const int potYPin = 5;
void setup()
{
Serial.begin(9600);
pinMode(buttonPin, INPUT);
digitalWrite(buttonPin, HIGH); // turn on pull-ups
}
void loop()
{
int x = (512 - analogRead(potXPin)) / 4; // range is -127 to +127
int y = (512 - analogRead(potYPin)) / 4;
For both programming, my references are form MyDuino websites, and mouse serial programming related websites.
