Perpetual motion devices are either a gag, a scam, or as in the case of this particular toy that [Big Clive] bought on AliExpress, a rather fascinating demonstration of a contact-free inductive sensor ...

in 2007 when its Orbo perpetual motion technology failed to deliver the goods and violate the law of conservation of energy. Eight years later Orbo has re-emerged in a Dublin pub in the form of a self ...