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Power beamed to camera via ambient wi-fi signals
- dmitrygr 11y agoThis is incredibly idiotic. They purposefully filled the airwaves with garbage packets, to collect bare milliwatts. And the "camera" took a B&W photo at tiny resolution and sent it nowhere. They even used already existing (and not even the best) energy harvesting chip. The only innovative thing here is somehow getting this to get posted on HN
- redindian75 11y agodidnt the first digital camera start that way?
- noipv4 11y agoIt might be better idea to use other ISM bands to power the device, and keep 2.4GHz as communications only and be a good WiFi / BT / Zigbee neighbor.
- toomuchtodo 11y agoOr just inductive charging at a distance?
- qnaal 11y ago> keep 2.4GHz as communications only communications and heating food
- logicallee 11y agoblack triangle.
- regeland 11y agoCompletely. And the claim that "this doesn't impact wifi bandwidth" completely violates the laws of physics. As if the 2.4GHz band isn't junk enough already with noise. And nor is this novel. Tesla did a large public demonstration of this in 1899. The only difference was the frequency and the target device (light bulb).
- 8_hours_ago 11y agoAn aside: I'm very glad that the BBC included a link to the actual paper, not enough news sources do that these days.
- gpvos 11y agoWell, at least they're not really forming wifi beams, which would run the risk of damaging your innards. But this still seems incredibly wasteful.
- cmdrfred 11y agoPsh. This is nothing. http://www.cs.columbia.edu/CAVE/projects/self_powered_camera/ http://www.cs.columbia.edu/CAVE/projects/self_powered_camera...