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Nicko

Tue Nov 29 2011, 12:05PM

Registered Member #1334 Joined: Tue Feb 19 2008, 04:37PM
Location: Nr. London, UK
Posts: 615

Steve McConner wrote ...

Great idea! But up here it gets dark at 3pm in winter, how will we get on with our work?

I suppose it would be a way of avoiding RSI too.

Why not use the UK FIT to install PV on your building to power the backlight of your LCD?

...Oh! Wait a minute....

Steve Conner

Tue Nov 29 2011, 01:26PM

Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706

I'll pay my friend in Australia to do that and post the electricity over!

hboy007

Tue Nov 29 2011, 01:34PM

Registered Member #1667 Joined: Sat Aug 30 2008, 09:57PM
Location:
Posts: 374

To my defense, let me point out that I appended the comment above a little bit since posting it. You can still achieve normal operation with the reflective fins at the back. Once they are closed, you can fire up an LED backlight solution between the fins and the diffusor.

GrantX

Wed Nov 30 2011, 01:35AM

Registered Member #4074 Joined: Mon Aug 29 2011, 06:58AM
Location: Australia
Posts: 335

Steve McConner wrote ...

I'll pay my friend in Australia to do that and post the electricity over!

Silly Idea:

Transmitting power by shipping chunks of physical electron-based degenerate matter around.

Buyers beware: Postage is priced by weight, so the costs are literally cosmic!

Ash Small

Wed Nov 30 2011, 11:37AM

Registered Member #3414 Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245

XravenorX wrote ...

Steve McConner wrote ...

I'll pay my friend in Australia to do that and post the electricity over!

Silly Idea:

Transmitting power by shipping chunks of physical electron-based degenerate matter around.

Buyers beware: Postage is priced by weight, so the costs are literally cosmic!

It's a much better idea to send it by E-mail

Conundrum

Wed Nov 30 2011, 08:49PM

Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062

Use model aircraft servo to move the reflector strips aside to let light in (recycle this from TWO dead panels)
Think pair of griddles here, ought to work fine.

Variant of this, use dead monitor as ghetto solar collector by attaching a row of calculator or monocrystalline cells to the backlight side.
Remove all but the diffuser strips to increase efficiency.
Add strip of yellow SMD LEDs along the other edge as a combined solar-fluorescent panel.

/me scuttles off to the WEEE bin to snag a few cracked monitors.

Forty

Fri Dec 02 2011, 05:37PM

Registered Member #3888 Joined: Sun May 15 2011, 09:50PM
Location: Erie, PA
Posts: 649

might as well share this idea i thought up (could be an established practice, i don't know)

I'm not too savvy with circuit board design programs yet so i still draw mine out by hand. in order to get the drawn circuit onto the board to be etched, i realized how much of a pain it would be to rescale everything and still allow sufficient trace widths.
So i thought i'd just make some graph paper with grid spacings equal to the usual 0.1" centers of IC pins so that i could draw the circuit on that and already have it to scale. Then i could either come up with some sort of iron on transfer method or simply redraw the circuit onto the board with a marker (which would be much easier with everything already to scale)
so a quick google search yielded incompetech.com/graphpaper which lets you design all sorts of grid types and then prints it to a pdf for you.

I'm sure it's kind of a "duh" idea to some of you, but hey, sharing it might help out one person at least.
here's a link

Conundrum

Sat Dec 03 2011, 07:40PM

Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062

I really should get my PCB printer working, using thin steel wires fed using a reel mechanism onto a polymorph base and then electroplated over so it resembles a damascene based IC but using plastic instead of silicon.

To finish the board, "blow" the fuse wires at the weak points, induction solder the parts using BiInSn based hybrid magnetic solder and voila.
Simplez

On the subject of sending electricity by post, sending semi-solid flow battery liquid would probably be fine as long as it wasn't corrosive, toxic or flammable.
IIRC it is a magnesium based metal alloy suspended in a non aqueous binder to prevent it reacting (much) but it is sensitive to moisture.

Not quite sure how they reverse the process but it appears that they reprocess the spent fuel somehow in a way that converts the complex oxide back into passivated metal again.

Come to think of it, why not use induction to make the whole thing work safely?
use iron (Fe) cores for the particles and plate the metals onto an organic base coat such as iodine doped polyacetylene and an overcoating of a porous polymer similar to conventional Li-Ion batteries.

At room temperature it won't react at all even if spilled, but inside the battery the applied fields cause the iron to heat up and destabilise the metal's passivation.
It then oxidises and the opposing metal reduces which generates a voltage.

To reverse the reaction would be done at home, using a "reverse flow battery" which reduces the oxidised particles back to metal.

-A
#include "Patent_pending.h"

Conundrum

Fri Feb 17 2012, 11:35PM

Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062

Reading about "structural batteries" got me thinking.

How about making the batteries inductively charged/discharged so that they are also damage resistant?

During charge they simply absorb applied RF energy and during discharge all the cells "sync up" so that the overall field is constant, derived from a master cell.

Sounds feasible?

-A

Chip Fixes

Sat Feb 18 2012, 12:22AM

Registered Member #3781 Joined: Sat Mar 26 2011, 02:25AM
Location:
Posts: 701

Sorry to change the subject Conundrum, but what about a sidewalk that generates electricity as you walk on it. Piezoelectric material maybe? It would be cool to make a prototype although I haven't done any research on how one would go about it...

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