Amaze call­ers with our pres­ence-de­tect­ing magic trick

Computer Shopper - - FRONT PAGE -

GET A FEW min­utes’ warn­ing on the ar­rival of a friend or loved one with this tech­no­log­i­cal ‘magic trick’. How you use that time is up to you: whether it’s tidy­ing the house, do­ing a fi­nal mir­ror check be­fore a date, preparing a sur­prise or just be­ing ready to greet your part­ner as they get in from work.

Best of all, the trick uses a £10 Raspberry Pi Zero W and a bit of code, so there’s no need to in­stall sen­sors around your home or sol­der wires.

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