Quiz Game Show Buzzer using Arduino

I’ve decided to try my idea with an Arduino prototype.

The different buttons are for each “team” and for the master of the game to accept or reject an answer, giving the point to the team answering the question or not.

The leds lit up to know which team can currently answer.

The speaker plays a little tune… but it’s not amplified, so it’s not very loud.

The display shows the current score for each teams.

Step 4: The Code

So… I’m including my code, but I’m not explaining it… and yes I know there is no comments… if you have questions, feel free to ask me, but I didn’t do this to make a programming tutorial.

First you need to include “pitches.h”… but to be able to include it, you need to get it from here… Arduino Tone Tutorial

#include “pitches.h”

Then let’s define some arrays to help ourselves for later when we need to use the 8 digits 7 segments display

// array to activate particular digit on the 8x7segment module<br>// it is the common anode of 7 segment
byte digit[8] = { 
  0b10000000,  //digit 1 from right
  0b01000000,  //digit 2 from right
  0b00100000,  //digit 3 from right
  0b00010000,  //digit 4 from right
  0b00001000,  //digit 5 from right
  0b00000100,  //digit 6 from right
  0b00000010,  //digit 7 from right
  0b00000001   //digit 8 from right                                         
};
<br><p>//array for decimal number, it is the cathode, please refer to the datasheet.
//therefore a logic low will activete the particular segment
//PGFEDCBA, segment on 7 segment, P is the dot
byte number[12] = {
  0b11000000,  // 0
  0b11111001,  // 1
  0b10100100,  // 2
  0b10110000,  // 3
  0b10011001,  // 4
  0b10010010,  // 5
  0b10000010,  // 6
  0b11111000,  // 7
  0b10000000,  // 8
  0b10010000,  // 9  
  0b01111111,  //dot                  
  0b11111111   //blank
};</p>

We should also define some constants that will help us identify input and output pins later in the code

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