Engineers made a Battery-Free Phone

RE: Engineers made a Battery-Free Phone

gfiandy — Fri, 04 Aug 2017 11:33:25 GMT

As noted above this is almost useless. If they want to research something people might actually want an emergency phone with a standard charging, hand crank and PV cell that has extra long range transmission and extra high sensitivty receiver would be ideal for keeping in a car, hiking, or other possible emergency back up situations.

Part of of the problem with modern phones in the smart part the other problem is 3G and higher specification transmissions seem to need much more power than 2G. Perhaps the new low power IOT protocols could be adapted to send short text messages as a emergency system.

Andy.

RE: Engineers made a Battery-Free Phone

michaelkellett — Fri, 21 Jul 2017 08:26:43 GMT

Universities will only stop putting out these stupid hype press release fundraisers when journalists start earning their living by doing a bit of research and adding some serious critique. This thing is useless - it gets a tiny amount of power by using a special base station in close proximity. It is NOT a cell phone in any normal sense.

As for video over e-ink display - get real Cabe - have you ever watched an e-ink display refresh, or looked up how much power it uses for each refresh cycle ?

There is plenty of good engineering going on - why not report some of that ?