Adhyoksh Jyoti
Published

Tilt to Tell

Exciting project to display the direction of tilt using 8x8 led matrix.

AdvancedProtip1 hour1,077
Tilt to Tell

Things used in this project

Hardware components

Arduino UNO
Arduino UNO
×1
8x8 led matrix
×1
74HC595 shift register
×1
Analog Accelerometer: ADXL335
Adafruit Analog Accelerometer: ADXL335
×1
Jumper wires (generic)
Jumper wires (generic)
×25
Solderless Breadboard Full Size
Solderless Breadboard Full Size
×1

Software apps and online services

Arduino IDE
Arduino IDE

Story

Read more

Schematics

Circuit

Code

Arduino code

Arduino
int i,j,t=100,dpin=13,lpin=12,cpin=11,a,b,c;
int r[8]={2,3,4,5,6,7,8,9};
byte up[8]={B11100111,
            B11000011,
            B10000001,
            B00000000,
            B11100111,
            B11100111,
            B11100111,
            B11100111
};
byte down[8]={B11100111,
              B11100111,
              B11100111,
              B11100111,
              B00000000,
              B10000001,
              B11000011,
              B11100111
};
byte left[8]={B11101111,
              B11001111,
              B10001111,
              B00000000,
              B00000000,
              B10001111,
              B11001111,
              B11101111
};
byte right[8]={B11110111,
               B11110011,
               B11110001,
               B00000000,
               B00000000,
               B11110001,
               B11110011,
               B11110111
};
byte ur[8]={B11110000,
            B11111100,
            B11111010,
            B11110110,
            B11101111,
            B11011111,
            B10111111,
            B01111111
};
byte ul[8]={B00001111,
            B00111111,
            B01011111,
            B01101111,
            B11110111,
            B11111011,
            B11111101,
            B11111110
};
byte dr[8]={B01111111,
            B10111111,
            B11011111,
            B11101111,
            B11110110,
            B11111010,
            B11111100,
            B11110000
};
byte dl[8]={B11111110,
            B11111101,
            B11111011,
            B11110111,
            B01101111,
            B01011111,
            B00111111,
            B00001111
};
byte o[8]={B11111111,
           B11111111,
           B11111111,
           B11100111,
           B11100111,
           B11111111,
           B11111111,
           B11111111
};
byte no[8]={B01111110,
            B10111101,
            B11011011,
            B11100111,
            B11100111,
            B11011011,
            B10111101,
            B01111110
};
void setup() 
{
  pinMode(dpin,OUTPUT);
  pinMode(lpin,OUTPUT);
  pinMode(cpin,OUTPUT);
  pinMode(a,INPUT);
  pinMode(b,INPUT);
  pinMode(c,INPUT);
  for( i=0;i<8;i++)
  {
    pinMode(r[i],OUTPUT);
    digitalWrite(r[i],LOW);
  }
}
void disp(byte ch[8])
{
  for(i=0;i<8;i++)
  {
    digitalWrite(r[(7-i)],HIGH);              
    digitalWrite(lpin,LOW);
    shiftOut(dpin,cpin,MSBFIRST,ch[i]);       
    digitalWrite(lpin,HIGH);
    
    digitalWrite(lpin,LOW);
    shiftOut(dpin,cpin,MSBFIRST,B11111111);   
    digitalWrite(lpin,HIGH);
    digitalWrite(r[(7-i)],LOW);
  }
}
void loop()
{
  int x,y,z;
  x=438-analogRead(A0);
  y=434-analogRead(A1);
  z=514-analogRead(A2);
  if(z<90)
  {
  if(x<-10 && (y>-10 && y<10))
    for(j=0;j<t;j++)
      disp(up);
  else if(x>10 && (y>-10 && y<10))
    for(j=0;j<t;j++)
      disp(down);
  else if(y<-10 && (x>-10 && x<10))
    for(j=0;j<t;j++)
      disp(left);
  else if(y>10 && (x>-10 && x<10))
    for(j=0;j<t;j++)
      disp(right);
  else if(x<-10 && y<-10)
    for(j=0;j<t;j++)
      disp(ul);
  else if(x>10 && y<-10)
    for(j=0;j<t;j++)
      disp(dl);
  else if(x<-10 && y>10)
    for(j=0;j<t;j++)
      disp(ur);
  else if(x>10 && y>10)
    for(j=0;j<t;j++)
      disp(dr);
   else if((x<10 && x>-10)&& (y>-10 && y<10))
    for(j=0;j<t;j++)
      disp(o);
  }
  else
    disp(no);
}

Credits

Adhyoksh Jyoti

Adhyoksh Jyoti

11 projects • 2 followers
Electronics and Communication Engineering student at NIT Srinagar, J&K.

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