Do you think it would be possible to build a mouse, which uses its movement to generate energy? (I don’t know a lot about electrical engineering, but there was this thing with a magnet moving in a coil, inducing electrical energy, wasn’t there?)
(Logitech mouse picture, they are probably not Fair yet)
It may be possible to adapt the roller wheels to generate electricity (readers note: at this point we’ve firmly crossed into thought experiment territory). Human power is more than sufficient magnitude-wise (WP says manual labourer can sustain 75W over the course of a day); so it would be a case of figuring out how it would feel to use.
Fortunately, the internet provides! (If I’d searched for this off the bat I’d have been quicker…)
The mouse is supplied with electricity by induction over the included mouse mat.
The product is discontinued. It’s less mobile and mobility is the main reason to have a wireless mouse.
I have no experience with wireless mice so I don’t know how often you’d need to change batteries/put it into docking station.
I think as long as energy is cheap things won’t change. (“As long as work is cheap things won’t change”?)
I nearly went to mentioning inductive powering / charging via a special pad, good to know that someone actually did that! I don’t find changing the mouse batteries to be an inconvenience; certainly not something I do with regularity. On the other hand, Sod’s Law says that the batteries will run out at the least convenient time…
@bertieb Thank you for the interesting links and your research! I think I will waste some more thoughts on the various components. Im particularly interested in the approach of using the hand’s warmth in connection with a thermoelectrical component.
Off the top of my head, thermoelettric generation is even less feasible than piezoelectric (I think) due to inefficiencies and the relatively low temperature differences involved. A quick perusal of the ever-knowing Wikipedia seems to confirm this:
Miniature thermocouples have been developed that convert body heat into electricity and generate 40μW at 3V with a 5 degree temperature gradient, while on the other end of the scale, large thermocouples are used in nuclear RTG batteries.
40μW is a factor of 10 000 away from 500mW unfortunately