A Game Show System

Part 1

Myself, Are Halvorsen and Marius Gundersen built a Game Show System!

The system is mainly for a quiz show with Ingeniørspillet at Trondheims Student Society (http://www.samfundet.no/). The event is april 14, and if you are in town I really recommend going (information) =)

Game Show System overview
Game Show System overview

Main features of the system:

  • A buzzer button for each team.
  • Local podium light for each team.
  • The system controls the stage lights over DMX: spotlight on the team that pressed the buzzer first, red light on wrong answer etc.
  • The system control a sampler over MIDI: Sound effects on buzzer buttons, correct answer etc.
  • Judges controls the reset-, correct- and wrong answer buttons.
  • The system will also have a backup audio solution for when a sampler is not present.

Part 2

Since last post we have tested both the sampler and the DMX at the Student Society. Our prototype had some major problems with its clock circuitry, but as a conclusion: We got a good overview over the light and sound system there =)

Gunnar and Marius looking at the Grandma
Gunnar and Marius looking at the Grandma
Gunnar and Marius using the Grandma
Gunnar and Marius using the Grandma
Testing the sampler
Testing the sampler

After some more meetings with the client we created some preliminary flowcharts.

We will implement two different modes: simple and advanced. In the advanced mode teams that buzz, but not first, will be placed in a queue. But in the simple mode it’s only the first team that buzzes after the start-button is pressed that get to answer.

Flowchart for the simple implementation
Flowchart for the simple implementation
Flowchart for the advanced version
Flowchart for the advanced version

Hardware will be divided into:

  • Main controller: This is the part that connects all together. It will contain two AVR 8-bit micro controllers, where the secondary only controls the DMX. The schematics and PCB is shown in a figure below.
  • Buzzers: Modified “easy-buttons” from Staples will do the trick.
  • Correct, wrong, and, start buttons: Just standard pushbutton.
  • Local podium light: Standard table lamps.

For connecting the buttons to the main controller cat-5 cable will be used. This is for easy replacement off buttons or cables, and because we need enough lines for driving leds inside the buzzer buttons.

Schematics and PCB layout for the main board:

Schematic

Bottom side of the motherboard
Bottom side of the motherboard
Top side of the Motherboard
Top side of the Motherboard

Part 3

Just some pictures from the progress =)

Part 4

Video from the show:

Finishing the creation:

The box
The box
Painting the box and the reset button
Painting the box and the reset button

IMG_0160

Installing components
Installing components
Testing
Testing
The finished system
The finished system

System in use:

IMG_0187

Judge buttons
Judge buttons
The Game Show System
The Game Show System
The scene
The scene
Correct answer
Correct answer
Wrong answer
Wrong answer

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