DIY Knock-Off Puzzles with Arduino – Digital Kit for Escape Rooms & Makers

Bring the classic escape room feeling into your own project.
With this digital DIY kit , you can build an interactive tapping puzzle where only the correct tapping pattern leads to success – ideal for escape rooms, secret compartments, chests or creative tech projects.

Whether behind a wooden wall, in a box or as a hidden mechanism: The knocking puzzle provides excitement, teamwork and a real aha moment.

This is how the tapping puzzle works

A hidden knock sensor (piezo) detects the entered knock signals.
The system measures the time intervals between the tapping pulses and compares them to a previously defined pattern.

✔️ Pattern correct → Relay is activated
❌ Pattern incorrect → no action

You can then use the relay to do things like:

• open a secret door
• to switch off an electromagnet
• unlock a chest
• trigger lights, sounds, or effects

What you get (digital download)

ZIP file containing:

• 2 ready-made Arduino codes (.ino)
• Record 1 tapping pattern (Recording Code)
• 1× Check knock pattern & switch relay (Checker Code)
• Detailed step-by-step instructions (PDF)
• Bill of materials of all required components
• Tips for use in an escape room
• License agreement for commercial use

No shipping, no physical product – available immediately after purchase.

Special features

• No programming knowledge required
• Knocking patterns can be individually defined.
• Tolerance adjustable (for different players)
• Relay output for controlling external components
• Compatible with Arduino Uno, Nano & compatible boards
• Ideal for escape rooms, Halloween installations & DIY projects

License & Terms of Use

The included Arduino code may be used commercially in your own products and escape rooms .
Sharing or selling the code as a standalone product is not permitted .
See attached license agreement for details.

Product safety

Product type: Digital product (download)
Manufacturer: District 44 GmbH
At the sports facility 14
63584 Gründau, Germany
Contact: office@fx-props.de