Gadget Talk – Build a Simple 4-LED Touch Sensor Lock Decryptor for Geocaching episode artwork

EPISODE · Jul 22, 2026 · 1H 17M

Gadget Talk – Build a Simple 4-LED Touch Sensor Lock Decryptor for Geocaching

from Geocache Talk - Geocaching Network · host Gary Slinkard

In this episode of Gadget Talk, we dive into a fun beginner-friendly electronics project that’s perfect for gadget caches, puzzle caches, escape rooms, and Maker Magic events! We’ll show you how to build a simple four-LED touch sensor lock decryptor using an inexpensive TTP223 capacitive touch sensor, four LEDs, and a few basic electronic components. Learn how to create a touch-activated puzzle where the correct sequence unlocks the next stage of your geocache. Subscribe to Geocache Talk on YouTube: https://www.youtube.com/GeocacheTalk   Check out more of the Geocache Talk Network of Shows here: https://geocachetalk.com/ https://www.facebook.com/geocachetalk https://twitter.com/geocachetalk https://instagram.com/geocachetalk   [email protected]   https://slinkgames.etsy.com   #geocaching #geocachetalk

Episode metadata supplied by the publisher feed · Published Jul 22, 2026

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Gadget Talk – Build a Simple 4-LED Touch Sensor Lock Decryptor for Geocaching

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