Projects Index

Pico True or False Quiz Game with LCD display

This project is a true or false quiz game based around a Raspberry Pi Pico with an LCD display.

The game includes a simple 5 question example but allows you to add your own files for a different quiz.

Pico quiz game circuit

The breadboard diagram is shown below. This includes an Adafruit I2C safe bidirectional level shifter, connecting to an LCD display with a PCF8574T I2C backpack.

Breadboard design Raspberry Pi Pico true and false quiz game with I2C level-shifter and LCD display with PCF8574T

The diagram below shows the actual circuit wired up. You can see the PCF8574T backpack mounted on the rear of the LCD display.

Internal wiring for Raspberry Pi Pico true and false quiz game with I2C level-shifter and LCD display with PCF8574T

3D printable case

For this I also created a 3D printed enclosure (case). In this case it was designed in FreeCAD. The enclosure is designed to be quite small, so the screw posts have been "cut-out" towards the bottom to provide space for the breadboard. Despite large overhangs this was printed without any supports, although you may need to scaffold for some 3D printers.

Raspberry Pi Pico true or false quiz game with LCD display and 3D printed enclosure

The design and STL files are provided below. You may need to increase the width of the walls compared to your normal settings which will allow for a M4 screw tap allowing you to screw the lid into the base.

An alternative option is to use a generic case and cut appropriate holes for the display, buttons and USB port.