Tobias hockey


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:

How To Make It


Add power


Add linkage cable


Add light sensor


Repeat 2-3 for as many phones as you want


Add linkage cable


Add LED cable.

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