Colour Change Shower Head - Powered by Water Pressure

[DDJ2011]

While surfing ebay for cheap kit I came across these colour changing shower heads - has anyone seen these or made one?

I'm curious how the water pressure powers the circuit?

Item description includes:

No battery needed, it is powered by the pressure of water,Very environmental.
Can be used more then 6000 hours.
Below 25 C,Lights Green.
From 26C -35C,Lights Blue.
From 36C -45C,Lights Red.
Above 46C -Red Strobe(Alarm).

 

[eclectic]

Mini "generator"?
Perhaps, similar to this

http://www.ebay.co.uk/itm/3Led-Brightness-Hand-Pressing-Torch-Yellow-Ideal-Kids-gift-/270908536839?pt=UK_SportsLeisure_Camping_LightsLanternsTorches&hash=item3f13683807

Go on, buy two.
Hack one and let us all know. )

e

 

[Dippy]

Why not be original and design a plastic duck for the bath that changes colour and propels itself along using a Microblower.
(I wonder if they'll do a version that can pump fluid).
There you go; 2 copyrightable ideas in a single post

Mind you, with Ec's search-fet he'll probably find this has been done already.

 

[eclectic]

You rang Sir?
http://www.amazon.co.uk/Tobar-Colour-Changing-Duck/dp/B000GCGBFA

e )

 

[Dippy]

You rang Sir?
http://www.amazon.co.uk/Tobar-Colour-Changing-Duck/dp/B000GCGBFA

e )

Aw... but that's not electric eclectic.
It's just got to have blue LEDs before it is considered 'totally awesome and cool'.

And I want it powered by Microblowjer i.e. fart power.

 

[eclectic]

We'll get there eventually.
http://www.ebay.co.uk/itm/3x-Baby-Bath-Toy-Yellow-Duck-Multi-Color-LED-Lamp-Light-/370470392083?pt=UK_Baby_Baby_Bathing_Grooming_LE&hash=item5641c19113

Just got to find an engine.
e

 

[manuka]

Colour/color changing shower heads are certainly innovative (& may eventually become a safety standard), but experiences with cheap ones indicate leaks,reduced flow pressure,noise & premature failure of the microturbine may occur.

As water pressure is essentially "free" they're really nothing new (refer past US patents),& such indicating shower units are merely just piggy-backing on coloured LED energy improvements.

Of course it's tempting to hack one for pressurised PICAXE powering,although (compared with solar power) water wasting may become an issue...

 

[Dippy]

"...experiences with cheap ones indicate leaks,reduced ...."
- sounds like Stan has been buying cheap CH goods again

I wish my water was free! I think it's over 80p per cu metre , so a fully staffed Nuclear Power station would be a cheaper way of lighting some LEDs

 

[srnet]

As water pressure is essentially "free"

Possibly true in areas that have gravity fed water ........

For every where else they use electricity to generate the pressure I think.

 

[SAborn]

We'll get there eventually.

I think someone is spending too long in the bath if they need a rubber duck, whats next a teddy bear for bed time???

 

[Dippy]

I think someone is spending too long in the bath if they need a rubber duck, whats next a teddy bear for bed time???

- Uh oh , that'll get the Googlemeister going again



One day they'll invent a solar+wind powered clothes drying device.

 

[srnet]

One day they'll invent a solar+wind powered clothes drying device.

Still being worked on;

http://en.wikipedia.org/wiki/String_theory