lukasz2049/quizbuzz

A quiz game for Arduino (work in progress)

QuizzBuzz

for Arduino (WIP)

Modes

0: PREGAME

In this mode players are joining the game by pressing the button.
Game begins (in Host Mode) either when the Host decides by pressing the Confirm button, or when buttons on all connected Player Boxes were pressed.

TODO: Game settings

1: HOST

This mode is indicated by the Host LED.
In this mode Host will be able to prepare before reading the question.

• Press Confirm to continue to the Question Mode.
• Press Center button to select a random active player.
• Press Player button to select an active player.

2: QUESTION

This mode is indicated by all active Player Boxes lighting up.
The first person to press the button will be in the Answer Mode,

• Press Cancel to go back to the Host Mode.

3. ANSWER

This mode indicated by selected Player Box ligting up.

• Press Confirm to check the answer as correct. Player's score will be indicated by a number of light blinks.
• Press Cancel to check it as incorrect. Player's remaining lives will be indicated by a number of buzzer blinks. If a Player has no lives left a long, quieter buzz will occur.

Game will now return to the Host Mode or change to the End Mode.

TODO: RGB LED on Host Box to indicate the player.

9. END

This mode is not finished yet.
This mode will be indicated by a rapid blinking of the Host Light.
In this mode the lights of the winner(s) are turned on.
Host may check the score of any player by pressing the corresponding player button.

10: TEST

Debug mode.

Modifiers

• Debug Mode: Press the Confirm button while powering on the machine.
• Disable vibrations: Press the Cancel button while powering on the machine.
• Reset: Press and hold the Center button for a few seconds.

Hardware needed

• 1 Arduino Mega (Due should also work fine, just keep in mind it's 3.3V)
• 1 RGB LED (optional) or 1 LED in a different color than those of the players.
• 3 buttons (Confirm and Cancel and Center)
• 1 On/off switch or reset button
• 1 LCD Display (optional)
• 1 power supply (7-12V)
• Some wires ;)
• 1 SSD1306 screen (optional, not supported yet)
• 1 YX5300 mp3 module & a microSD card (optional, not supported yet)

Per player:

• 1 big colorful arcade button (look for "60mm arcade buttons" on Aliexpress or eBay)
• 1 color LED
• 1 coin vibration motor
• 2 S-Video female sockets (optional)
• 1 S-Video 4 pin cable (optional)
• 1 small colorful button (optional, for the Host)
• 1 transistor (optional) for driving an LED
• 1 transistor (optional) for driving a vibration motor

Notes:

S-Video is in my opinion the best choice if you want for the buttons to be detachable. It has 4 pins: LED, button, motor & GND. Just make sure that the cable has separate wires 1 and 2.

A typical vibration motor works is designed for voltage from 1.5-2V up to 3.5-5V. Most of them are described as 3V units but should work with 5V just fine.
Details: https://www.adafruit.com/product/1201

Most, if not all, arcade buttons have 12V lights (just a regular color LED with a resistor). You'll need to replace the resistor if you want the full brightness. Alternatively you may keep the original resistors and, with a help of a transistor (which is recommended anyway), power it from a power supply (VIN pin).

Keep in mind Arduino current limits:

• DC Current per I/O Pin: up to 20 mA recommended, 40mA absolute max
• Total DC Current from I/O Pins: 200 mA
• DC Current for 5V Pin: 400mA (USB), up to 900mA (external power supply)
• DC Current for 3.3V Pin: 50-150mA (shared with the 5V pin)
• DC Current for VIN Pin: limited by the power supply