E3f1fb20c527a9612aa88958427a5bc8bdfad969851422c993b7fd0a665de093

invention

Tech-free dinner

by tobiaslarsson

Published on May 12, 2015

Keep the dinner free from those nasty cell phones people are playing with all the time. The phone stack allow you to check in the phone, when all family members (in this case 4) have stacked their phones, the LED string is lighted up. The youngest in the family checks that the light is on and dinner may be served ;-)
Instagram video: https://instagram.com/p/2jAlf9RfeB/

How To Make It

1

Add power

2

Add linkage cable

3

Add light sensor

4

Repeat 2-3 for as many phones as you want

5

Add linkage cable

6

Add LED cable.

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