Newbie with very basic question

Hi all! First post as have been lurking for a bit.

Theres not much in the way of electronic forums out there, and google isn't proving much help either!

I have a fairly simply project - a car speedo (porsche in this case) that i wish to convert to a clock, with the warning lights working for on my desk at work.
A battery powered clock mechanism is a no-brainer of course - but i'd really like a clock mechanism that can be wired up with a couple of white led's and powered from mains with a 12v supply.

Any guidance on parts ideas would be useful - the clock mechanism (one thats small enough and can be powered from 12v anyway) is proving the pain, once found i could piggy back power onto a board for leds from there.

thanks!

Hello and welcome

Umm,your questions are not really related to the general direction of this forum.

I can't advise on what you have asked. Other people may know more...

You can also try here :

http://www.electronicspoint.com/

and here :

http://forum.allaboutcircuits.com/forumdisplay.php?f=3

Both are pretty active.

antpal said:

Hi all! First post as have been lurking for a bit.

Click to expand...

Welcome!

I have a fairly simply project - a car speedo (porsche in this case) that i wish to convert to a clock, with the warning lights working for on my desk at work.
A battery powered clock mechanism is a no-brainer of course - but i'd really like a clock mechanism that can be wired up with a couple of white led's and powered from mains with a 12v supply.

Click to expand...

Well the 12V power supply requirement you've imposed is the only thing that would make this somewhat difficult.  Most mechanical wall/nightstand clocks are powered from one AA battery (1.5V)  some run off 2 AA batteries in series (3V).
I would suggest finding a clock that runs off 2 AA's and find a cheap 5V supply (old external hard drive supplies are easy to come by).  Use 3 diodes to drop the 5V to around 3.2V to power the clock.  The LEDs could be powered directly from the 5V with series resistors.

NOT a "basic question".

Title ought to say "Porsche speedometer clock"; post should show the specific speedometer (aint the same 1953 or 2010). Not sure what the "warning lights working" means... blink when your desk goes too fast?

http://www.e-potpourri.com/index.php/2007/09/05/less-is-more-with-the-stylish-round-blue-led-clock/

http://www.poempelfox.de/ntpdcfledclock/

http://www.google.com/search?q=led+wall+clock&tbm=shop
http://www.google.com/search?q=led+desk+clock&tbm=shop

http://www.amazon.com/Large-Display-Clock-Sper-Scientific/dp/tags-on-product/B001EUETXE

http://www.japangadgetshop.com/products/LED-Analog-Projection-Clock.html

http://www.amazon.com/Zepellin-Collectible-Buying-Stairway-Heaven/dp/B000M7SETU
whoops.... wrong "Led"!

http://www.amazon.com/Glowing-Color-Changing-Digital-Alarm/dp/B001D26OX6

http://www.ankaka.com/wooden-led-digital-alarm-calendar-desk-clock_p46844.html

my desk is the opposite. A bus station is where the bus stops. A train station is where the train stops. On my work desk I have an audio workstation. you get the idea

Yeah ... That's where the sound stops!