In this video tutorial, I'll explain how to create a "Fortune Teller's Crystal Ball" escape room puzzle that uses the builtin touch input of an ESP32 microprocessor to detect when players place their hands on certain tarot cards. As they touch the cards, a crystal ball illuminates, using a MOSFET to gradually increase the current through a 12V LED lamp, and a sound effect plays through a serial MP3 player. When they touch the final card in the correct sequence, a relay is energised, releasing a maglock, allowing them to claim their prize.

I'll give a complete rundown of all the components I use, together with a detailed explanation of the wiring and code. More details and downloads for this tutorial, and all the other #EscapeRoom projects on this channel, can be found on my Patreon page at   / playfultech  

00:00:00 00:01:25 Introduction and Demonstration
00:01:26 00:06:17 Hardware Overview
00:06:18 00:14:54 Wiring diagram
00:14:55 00:48:27 ESP32/Arduino Code
00:48:28 00:49:47 Wrapup

If you're using an Arduino, Raspberry Pi, or other microcontroller that doesn't have touchenabled inputs, you can add them using a capacitive touch module such as a CAP1188, as demonstrated in this tutorial:    • Arduino Capacitive TouchFree Touch S...  
For more information on the DYHV20T MP3 player I'm using, and comparison to other audio modules, see    • Audio modules for electronics project  

#escaperoom #esp32 #arduino #electronics