Comments on: Riser helmet mods

By: arai motorcycle helmet

arai motorcycle helmet — Sun, 17 Dec 2006 00:07:39 +0000

Doesn’t it seem like all blogs are narrow down the center of the screen like a newspaper column? Does anyone besides me miss full page, full sized websites that don’t feel all boxed in? I would like to take a poll and see what everyone thinks about this. I think it is possible to make a full screen blog that doesn’t look bloated or stretched; check out my blog and see what you think. Is it too horrible and should I scrap it for an HTML site?

By: brocly

brocly — Mon, 12 Jun 2006 10:36:12 +0000

Great job guys…

By: ULrich Wilsenach

ULrich Wilsenach — Thu, 25 May 2006 07:22:15 +0000

The standard security Remote control batteries (smaller than AA) runs at 12V… simply wire in parrallel to get life you require..
available at any camera and security products store..

By: Jens Kristian Egsgaard

Jens Kristian Egsgaard — Tue, 21 Mar 2006 16:21:37 +0000

Hi Mark
If you still have problems with the power supply, I belive you should try use 8*1.5V batteries in serie; that should produce the voltage on 12V. If you only use 4, you will get only half the voltage and you would have to use a transformator, which will be a problem with direct current (and wouldn’t be handy, anyway).
Regards
Jens Kristian Egsgaard

By: Eirik Hjelle

Eirik Hjelle — Sun, 19 Mar 2006 14:18:53 +0000

As you proparbly already know you 4xAA 1,5V batteries in series produces 6Volt DC and since you are looking for 12VDC you’ll need a converter circuit. I did a quick browse through the internet and found a fairly easy circuit which I think will serve the purpose you are looking for, http://www.aaroncake.net/circuits/6-12conv.htm . I found a batteryholder for 4xR6 (AA) batteries for you at http://www.elfa.se/elfa-bin/dyndok.pl?dok=7385.htm . Hope that can help you

By: j-a-p

j-a-p — Sat, 18 Mar 2006 23:53:23 +0000

I think you’ll find you need 8no 1.5v batteries connectied in series to get a 12v supply.

By: bbm

bbm — Tue, 28 Feb 2006 11:28:59 +0000

You need to make use of solar power. O'Neil already has a bag available. Why not build it into your ski jacket, as you wouldn't always want to carry a bag. I guess this means you would need a battery of some kind and would be using solar energy to recharge it.

By: dmflad

dmflad — Mon, 27 Feb 2006 19:53:31 +0000

Maybe look into radio control(R/C) airplane or car set ups using LiPo(Lithium Polymer) batteries. Seems the packs keep getting larger and with the newer larger electric motors guys have been able to retrofit their gas-powered R/C airplanes to electric. No idea about battery time. Shot in the dark, but hey you said any suggestions.

By: Will

Will — Mon, 27 Feb 2006 18:20:38 +0000

There are a number of universal rechargeable Li-ion packs available. I’ve used them for various wireless camera devices etc.
An old laptop battery pack is thin, removable, rechargeable and generally 12V.
O’niell are making solar back-packs (much trendier but only likely to produce about 3-4W)
Otherwise a bag full of potatoes connected with stolen Telkom wire worked in school…

By: Juan Sebastián Narváez

Juan Sebastián Narváez — Sat, 18 Feb 2006 16:40:36 +0000

For an in-series connection perhaps the easiest would be a cylindrical receipient, like that of a flsh light, and have a wire sticking out from each end, fitted with suitable spring loaded caps. There are commercial ruggedized, water tight flashlights that could serve as a model or as starting material for your project.