So has anyone computed the real savings in terms of $$ of having a solar powered DS?
Alternately, does this really "save the earth"?
Let's see -- $120 bucks (not counting labor) to make a DS lite solar powered. How much would it cost to charge one from a power outlet over it's lifetime?
Ok let's do some crappy math:
5.2V * 1 amp (why 1 amp, because I couldn't find out the actual load so I went extermely conservative) = 5.2 watts.
3 hours to charge for ~15 hours of game play (right off the webpage for the DS).
That's like: 15.6 watt/hours a day. (assumming 15 hours of gaming a day).
Now assume you game everyday for 5 years:
365 days * 15.6 watt/hours * 5 years = 28,470 watt/hours
Why 5 years, because I made it up...besides by then that poor DS would be wore out!
I pay ~15 cents per Kilo-watt hour in California. So the bottomline cost is:
$4.27!!!!! 8O
Ok, I'm not an Electrical Engineer and I didn't compute charging losses and I may be totally full of crap, but why would you want a solar powered DS Lite again?
What's this? Only gaming 19 hours a day gaming, there's 24 in a day, don't be wasting 5 hours on productive work or sleep!
Thanks for the comments, guys. Good points on the cost analysis. The Soldius 1 isn't economically attractive. I was hoping the device would be more in the price range of $40 to $50, which still doesn't save you money in the long term because the DS Lite's draw for the battery recharge is low. Honestly, I have no idea why these small units cost som much considering the large panel for the Solar Wii was only about $80 more and had much more power to offer. The hardware itself isn't all that complicated, the parts are cheap and the design is very basic.
However (and I probably should have spelled this out in the article) we fiddled with this mod for the sake of convenience. In other words, we wanted to alter the system so that you didn't necessarily have to find an outlet and recharge the DS if you're playing it for hours on end. Especially during travel, it can be hard to find an outlet to charge your cell or laptop or whatever. So we attached the solar panels to free up the DS Lite in that respect. For example, if you're on a 16 hour flight to China and had no place to charge your DS, theoretically you could open up the solar panels, set it on the tray table and let nature do the rest.
As for the sun glare factor, yes, it was a complete b*tch, which is why we put the battery back in. If the only time you could play the DS was in mostly sunny weather, you'd get a serious headache from squinting.
This one is 4V which might not even need much of a voltage regulating circuit, although, I don't know the charging voltage for a DS Lite.
http://store.sundancesolarcorp.com/misopa4v10.html
I have a serious question, but please keep in mind that although I am curious, I am also completely ignorant of the technology. Was the solar equipment the smallest you can buy on the market, or just the smallest you can buy as a regular consumer?
They did it because they could! I think it is brilliant. and I bet you can sell it for 2 to 4 times its cost on Ebay!