Bygonebytes

Introduction


Quiz Control Panel

The Quiz Control Panel is the standard setup of four contestant buttons, each with an output to provide an indication of who pressed first. The program locks out the other three buttons and provides an output for a 1s buzzer. The Question Master then has to press his reset button to normalise the system. A GUI with different team colours is included if a monitor is used. For when the Pi is headless (no monitor) I have included a button (hold for 3s) to gracefully shutdown the Raspberry Pi so it can be unplugged without fear of corrupting the SD card. Of course the program will need to be started at power on, this is done by editing the file:

sudo nano /home/pi/.config/lxsession/LXDE-pi/autostart

and adding the line,

@/usr/bin/python /home/pi/Quiz.py (the path & program and the path & file name of the script)

The Quiz unit comprises of four button boxes each with a wireless remote control key fob built in and the master box with the relay receiver board, Raspberry Pi, output relay board, lamps and buzzer. There is also an off button and a system ready LED to indicate the Raspberry pi has booted successfully.

RPi Quiz Script (just copy & past into IDLE 2.7).

RPi Quiz Panel Schematic.

Quiz
Quiz GUI Quiz Hardware
Complete quiz system.

Demonstration of the prototype Quiz Panel - Buttons and Lamp boxes will be replaced with something more suitable..