Making a Shelving and Electronic Retrieval System for Huge Cellphone Library

This is not a build that many would care (or need) to undertake, but it’s fascinating to see how the challenged was addressed.

Matt of DIY Perks was tasked by fellow ‘tuber, tech reviewer, Arun Maini (aka Mrwhosetheboss), to come up with a way of storing his collection of a thousand cellphones. There are all of the review units of phones that Arun has acquired over the years. As you can imagine, storing such a huge collection of phones so that they can be identified and easily retrieved is a daunting challenge.

Matt came up with a really ingenious 3D-printed spring clip that the phones slot into on a rack. And the whole shelving system was outfitted with addressable LEDs driven by a server built right into the shelving unit so that Arun can pick a phone from a database (um…on his phone) and see that phone’s location light up on the wall. So impressive!


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