Morse-style button puzzle for escape rooms & interactive projects

The Morse Code Riddle is an Arduino-based, single-button input puzzle where players must combine short and long key presses into a Morse-like sequence .

Once the correct input sequence is recognized, a relay output is activated – ideal for opening doors, triggering effects, or as part of more complex puzzle chains.

The system is deliberately robust, clear, and designed without a display . No guesswork, no chance – pure logic.

This is how the Morse code puzzle works

• Input via a button
• Short press of a key = SHORT
• Long press = LONG
• The input will be checked step by step.
• With correct sequence:
  
  • Relay output is activated
  • optional success feedback (LED / signal)
• After the success time has elapsed, the puzzle resets automatically.

Technology & Features

The Morse Code Riddle is fully customizable.
The buyer can, among other things:

• change the target input sequence
• Adjust time definition for SHORT / LONG
• Set timeout between inputs
• Configure or disable error pause
• Set the duration of the relay signal
• Adjust pin assignment

No structural redesign of the code is required.

Tip: This puzzle is part of our modular FX-Props system and can be flexibly expanded with additional puzzle and effect modules.

Tip: This product is part of our Arduino Escape Room Bundle – 3 puzzles, one download, cheaper than buying them individually.

Scope of delivery (digital download)

• Code for the Morse Code Riddle
• Detailed instructions (PDF) in German & English
• Wiring diagram

The download is available immediately after purchase.

No physical product. No shipping.

License & Terms of Use

The included code may be used and adapted in your own escape rooms and commercial projects .
Sharing or selling the code as a standalone product is not permitted .

Note regarding digital products

This is a digital product, no returns.
There is no physical shipping. VAT is automatically calculated at checkout, depending on the buyer's country.

Product safety

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