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Knowing how heavy it would become once it’s filled with books, he added some caster wheels hidden ... room, using an Arduino allows also for a whole lot more variety of integrating the secret ...

Ricky Gui showcases a stunning series of "Hidden Doors" located behind shophouses in Singapore. Working for over a year, Gui highlighted over 600 "Hidden Doors"in his documentation. These doors ...

So he started a company himself. Now, Creative Home Engineering installs hidden doors, secret rooms, and trapdoors in homes. Story by Jacob Shamsian and editing by Stephen Parkhurst More from ...