Which TOHs has Jolla endorsed?

asked 2014-12-26 00:58:16 +0300

rdmo
3529 ●97 ●123 ●129

updated 2015-04-29 18:24:05 +0300

Otherwise, for example, with a pH meter or a dynamo charger/capacitor or a one that fits into/onto a charging cradle or one that serves as an extra battery?

A modular NotHalf system would let Other Half parts fit together in 2, 3, 4, 6, or 8 segments.

This would allow, for example, 9 SIMs, or extra power, radio, winding, PV, TV remote (multiple remotes), a pH meter and even a keyring or clip.

A winder (passive or otherwise) would make off-grid use more practical and enable different mechanisms for recharging. A high-capacitance TOH (presumably not a conventional, slower-charging battery) would load electrons fast but discharge into the battery much more slowly, as mandated by the physics of the battery. (Admittedly, I still don't know if such a capacitor or adequate ambient temperature conduits exist at an affordable level.)

Such an outsized or docking station of a t'The Other Half could be an available option at the point of sale in many countries' tech markets, if it becomes viable.

There's a TOH poll, from early 2014:

https://together.jolla.com/question/17129/poll-the-other-half-of-your-dreams/

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7

Jolla does not make other halfs, it's a software company. But somebody probably should make it. IMO toh market is really underated. I really don't understand why distributors of Jolla phones do not sell some kind of TOHs alongside

virgi26 ( 2014-12-26 01:08:20 +0300 )edit

Thanks. Did Jolla outsource manufacturing of its original TOHs? Did Jolla do the required TOH design work or specifications?

rdmo ( 2014-12-26 01:18:59 +0300 )edit

3

original TOH is just simlple "cover" and is made by Jolla. They did release all specifications needed to create custom TOHs, you can find it on jolla.com

virgi26 ( 2014-12-26 01:23:50 +0300 )edit

http://jolla.com/the-other-half-developer-kit

rdmo ( 2014-12-26 01:38:51 +0300 )edit

3

That's a great idea. A winding-powered phone could sould ridiculous but I bet it would have a great success related to sustainability. You can also boast that the most expensive watches work this way while the cheapest watches are battery-powered.

Giacomo Di Giacomo ( 2014-12-26 12:31:50 +0300 )edit

11

answered 2015-01-25 18:43:39 +0300

lakutalo

20555 ●168 ●261 ●264

updated 2015-08-02 22:59:30 +0300

Although theoretically feasible, practically a manual winding charger will not be realistic too soon. The limiting factor is the power consumption of our devices. To make this illustrative, compare mechanical work to electrical work under ideal linear circumstances,

UIt = 2 pi nFd for n winds.

Assuming 2100mAh * 3.7V = 7.77Wh = 27,972Ws on the electrical side and F=3N as manual force, d=0.03m for a realistic lever, you end up with about 49,490 winds necessary for a complete charge.

I leave it up to you to find out how many winds you need for a charge-up of 1% - and how long, if you suppose average 3 winds per second.

Real circumstances will imply you have to take into account: friction, other losses and poor efficiency of the generator. So already assuming those happy parameters of mine, you would have to consider almost a full working day for a full charge. If you're a lawyer, that makes it worth about EUR 3,000 - you would get 12 new Jollas! ;)

I am sincerely sorry for disappointing any expectations, including my own. :)

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I don't suppose some gearing system might bite into those ~50k winds. Could that enable the 3N to be revised up?

rdmo ( 2015-01-25 19:02:12 +0300 )edit

2

Well, give it 30N and a biger lever. You still have to wind for about 1h assuming you do one wind per second. But that would be some generator! Surely not fitting my pockets. And after a couple of charges you will look like Popeye.

lakutalo ( 2015-01-25 19:07:11 +0300 )edit

1

If we imagine a fixed winding station with pedals and mountain bike gears?

rdmo ( 2015-01-25 19:12:35 +0300 )edit

3

As TOH? :-)

lakutalo ( 2015-01-25 19:43:54 +0300 )edit

Anyway it would not matter, given the charge the phone takes, you could charge it with a car battery, but the phone would melt if given more than the specified current. imagine Mike Tyson punching a baby (Spoiler: he can not take the hit) Mr. Tyson could not use as much strength against a baby as an opponent in the ring.

emva ( 2015-01-25 19:59:50 +0300 )edit

8

answered 2015-01-25 12:19:23 +0300

dirkvl
441 ●6 ●15 ●21

I dont see it happening. Reasons being:

it will be expensive (lots of parts and lots of R&D)
it will be very thick
there is a reason wind-up radios exist, but wind-up laptops are not common, you will wind to the end of dawn
there are already stand-alone pocketwinders with batteries, usb port and solar panels crazy cheap

To conclude, the problem is already solved and there will be no cheaper and/or better solution.

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In addition to that and having efficiency of such a dynamo in mind, just think of the winding time needed for a couple of percent charged.

lakutalo ( 2015-01-25 12:26:57 +0300 )edit

7

"you will wind to the end of dawn" ;)

dirkvl ( 2015-01-25 13:52:48 +0300 )edit

Can you recommend a pocket winder that is widely available? I was thinking also of pedal dynamos with USB. Please list any you know about.

rdmo ( 2015-01-25 15:10:02 +0300 )edit

2

Search for cougar solar powerbank. Not too handy, though. :-)

lakutalo ( 2015-01-25 18:59:44 +0300 )edit

@rdmo , you mean something like this http://gizmodo.com/5936524/usb-charging-bike-dynamo-harnesses-pedal-power

nick75 ( 2015-01-26 10:08:39 +0300 )edit

Which TOHs has Jolla endorsed?

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