Uploaded June 2024 | Updated September 2026, 1 week ago
Learn how to create an escape room puzzle in which players need to crack the code to open an electronic safe.
It uses a small solid steel safe (available at amazon.co.uk/gp/product/B07KZZX6ZN ), which has been modified by the addition of an ESP32, some programmable LEDs, a 7-segment display, a rotary encoder, and a piezo transducer.
Players must rotate the rotary encoder, alternating clockwise and counter-clockwise, until they hear an audio cue that emulates tumbler pins falling into place. When all the digits of the code have been set correctly, a solenoid is retracted which enables the safe door to be opened and its contents retrieved.
Timings
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00:00:00 - 00:01:55 Introduction and Demonstration
00:01:56 - 00:06:09 Safe operation
00:06:10 - 00:08:28 Hardware modifications
00:08:29 - 00:16:15 Wiring Diagram
00:16:16 - 00:41:12 ESP32/Arduino Code
00:41:13 - 00:42:17 Wrapup
Support Me! (or let me support you :) )
---
This video tutorial is made possible with the generous support of my Patreon donors - thankyou!
For more details of this, and to access downloads, wiring diagrams, and additional resources and support for all my escape room technology projects, please go to patreon.com/playfultech
Learn how to create an escape room puzzle in which players need to crack the code to open an electronic safe.
It uses a small solid steel safe (available at amazon.co.uk/gp/product/B07KZZX6ZN ), which has been modified by the addition of an ESP32, some programmable LEDs, a 7-segment display, a rotary encoder, and a piezo transducer.
Players must rotate the rotary encoder, alternating clockwise and counter-clockwise, until they hear an audio cue that emulates tumbler pins falling into place. When all the digits of the code have been set correctly, a solenoid is retracted which enables the safe door to be opened and its contents retrieved.
Timings
---
00:00:00 - 00:01:55 Introduction and Demonstration
00:01:56 - 00:06:09 Safe operation
00:06:10 - 00:08:28 Hardware modifications
00:08:29 - 00:16:15 Wiring Diagram
00:16:16 - 00:41:12 ESP32/Arduino Code
00:41:13 - 00:42:17 Wrapup
Support Me! (or let me support you :) )
---
This video tutorial is made possible with the generous support of my Patreon donors - thankyou!
For more details of this, and to access downloads, wiring diagrams, and additional resources and support for all my escape room technology projects, please go to patreon.com/playfultech
