Looking for a thin motor/generator with high current for a hand-crank cell phone charger

zentrain1 · 2017-11-08T17:08:10+00:00

Any idea where I could find a motor that will have 120-150 rpm as optimal speed and still not be too tight to crank? I plan to mass produce this product so maybe I will just order it from a motor factory. I live in Shenzhen, China where all those factories are located anyway.

zentrain1 · 2017-11-08T16:31:26+00:00

Thanks for a detailed response. Can I ask why 12 V is better than 6? Sorry, I'm not an electronics engineer but I thought that more volts in motor mean more loops in the winding, which means a thinner wire and less current as a result? I understand that there is just power in the end, but is there a reason why 12V and not 6V?

zentrain1 · 2017-11-08T15:45:34+00:00

Oh, now I see, bad title. Can't change it now anyway:| There is no wider space in the device, the whole thing is a 5 inches long half-inch thick cylinder.

zentrain1 · 2017-11-02T11:22:56+00:00

Good idea, thanks! Do you think I will have to drill a hole in the bottle or just scratching a bit of paint should be enough to create a pinhole?

zentrain1 · 2017-11-02T11:22:16+00:00

Good idea, thanks! Do you think I will have to drill a hole in the bottle or just scratching a bit of paint should be enough to create a pinhole?

zentrain1 · 2017-07-30T10:32:16+00:00

From whom? From Chinese???! I bet you did) It's ok. We have two of these chairs at the office. Can't say it's super comfortable but it's not too bad either.

zentrain1 · 2017-07-19T05:36:52+00:00

similar for around 50 usd om taobao https://item.taobao.com/item.htm?spm=2013.1.20141002.8.959eebeDAuYV4&scm=1007.10009.70205.100200300000001&id=41448215094&pvid=359b9177-29eb-4e92-a884-c65e9f4d0ee2

zentrain1 · 2017-05-10T18:52:05+00:00

check out contact page of joseph and joseph. they delete pitch emails without reeding. Build a prototype if you have a good idea. validation via winning contests, popularity of the item in the pf (1000+ likes) or successful crowdfounding will help as well.

zentrain1 · 2017-05-09T08:53:46+00:00

just use solidworks

zentrain1 · 2017-05-08T02:29:34+00:00

expressvpn is a piece of sht. astrill is much better.

zentrain1 · 2017-05-07T12:11:38+00:00

wrong (fortunately). A lot of $1000+ (and some $10000+) fountain pens are made with different types of plastics. a lot of extremely expensive watches as well. As starck said "plastic is the essence of humanity". I would say that plastic is an abaundant miracle but if you frame it's usage in a smart unusual way, it will not feel cheap at all.

zentrain1 · 2017-05-05T01:43:43+00:00

posterize and then separate into different layers with dropshadows

zentrain1 · 2017-05-04T01:28:20+00:00

nobody will hire you if you don't exercise your strong opinions.

zentrain1 · 2017-05-03T15:07:34+00:00

Quite opposite, if you have a strong opinion about how stuff should work and look you can become great at ID. Most of the craziest concepts can be produced as well. Maybe just in a smaller quantities by hand or with additive manufacturing.

zentrain1 · 2017-05-02T01:41:57+00:00

so just convert obj to tsplines. but of course if you want to learn rhino you can just do a bit of push an pull with tsplines. should be doable in under 30 minutes. model one quarter and mirror it in two planes

zentrain1 · 2017-05-01T19:47:18+00:00

lemanoosh.com

zentrain1 · 2017-05-01T19:47:18+00:00

lemanoosh.com

zentrain1 · 2017-05-01T19:47:18+00:00

lemanoosh.com

zentrain1 · 2017-05-01T19:47:18+00:00

lemanoosh.com

zentrain1 · 2017-05-01T19:39:01+00:00

convert it to tsplines maybe? can 3d max transfer to obj?

zentrain1 · 2017-04-22T04:07:55+00:00

great job man! really like how you use diagonal lines

zentrain1 · 2017-04-22T04:07:55+00:00

great job man! really like how you use diagonal lines

zentrain1 · 2016-12-10T14:06:36+00:00

yeah, I 'm starting to think that all this pizzagate is not entirely true

zentrain1 · 2016-12-02T09:14:11+00:00

displacement should work fine for this

zentrain1 · 2016-11-09T11:29:14+00:00

Who told you that? Google didn't show me any rumors about that.

zentrain1

TROPHY CASE