Beer coaster with LED and "Auto-On/Off"

thingiverse

First Attempt at a Revolutionary Beer Coaster with Built-in LED Lighting. When you place an empty coaster on its stand, the built-in LED remains dark and dormant. But the moment you put a drink on it, the coaster springs to life - literally - as the LED light suddenly flickers on. The clever mechanism requires just the right touch to trigger it. German Translation: Bier-Coaster mit integrierten LEDs The Innovative Combination of LED Lighting and CR2032 Housing. Instructions for Assembly: 1. Print your Beer Coaster design upside down, without any additional support. 2. Cut away the two guide rails that will no longer be needed.