Drone Flies 12 cm on Wireless Power

[Sam M] wrote in with a quick proof-of-concept demo that blows our socks off: transferring enough power wirelessly to make a small quadcopter take flight. Wireless power transfer over any real distance still seems like magic to us. Check out the videos embedded below and you’ll see what we mean.

What’s noteworthy about this demo is that neither the transmitter nor the receiver are particularly difficult to make. The transmitting loop is etched into a PCB, and the receiver is made of copper foil tape. Going to a higher frequency facilitates this; [Sam M] is using 13.56 MHz instead of the kilohertz that most power-transfer projects use. This means that all the parts can be smaller and lighter, which is obviously important on a miniature quadrotor.

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iBook wireless retrofit

[squishy] sent in his iBook refit project. Normally a laptop ressurection wouldn’t grab my attention, but the wireless card caught my eye. Because his ebay deal didn’t come with an airport card, he refitted it with a Senao 200mW wireless card. The card just fit – and with some dremel work on the antenna connector, it was plug and play under linux.