So, with a Raspberry Pi that had been kicking around for a while, I wanted to find a nice project that would allow me to make best use of it. I came across this great Instructable Build Your Own Weasley Location Clock by ppeters0502 and thought that it would be good to try.
The clock basically consists of a Raspberry Pi which controls servos in order to turn the hands of the clock. As in the house of the Weasley family in the Harry Potter books/films, each family member has their own hand. Each hand points to the current location of that family member. The clock achieves this by receiving messages from the mobile phones of the family whenever they enter or leave a pre-defined radius.
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