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Bill Terry
Tinkerer
VIC
V8

Posts: 38
Reg: 09-2005

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 Friday, April 27, 2007 - 09:26 am, by:  Bill Terry (Sideburns) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
G'day everyone,
Just a thought, has anyone ever tried this sort of product for the AC backlight?

http://www.ledsales.com.au/cart.php?target=product&product_id=376&category_id=35

Cheers, BT

PS - also, can anyone foresee any problems with using this type of thing?
Bill Terry
Tinkerer
VIC
V8

Posts: 39
Reg: 09-2005

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 Friday, April 27, 2007 - 11:45 am, by:  Bill Terry (Sideburns) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
or something like this!

http://cgi.ebay.com/12v-WHITE-24-LED-Flexible-Water-Proof-Strip-12-volt-2pc_W0QQitemZ150114490500QQi hZ005QQcategoryZ72237QQcmdZViewItem
Kanchana Pathirana
TryHard
victoria
3ltr straight 6

Posts: 227
Reg: 02-2006

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 Friday, April 27, 2007 - 12:44 pm, by:  Kanchana Pathirana (Kan83) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
well i dont see why not. i did the good old resister and led combo and solderd them in.

what you have there would be a lot neater as all you have to do is solder the two wires to any power source that lights the backlight.

the only thing is if the light will be evenly distributed (no dark and light spots), other than that should be sweet
Tai Johnsen
TryHard
QLD
UZZ31 - V8

Posts: 268
Reg: 04-2006

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 Friday, April 27, 2007 - 01:35 pm, by:  Tai Johnsen (Privatejohnsen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
For even light distribution, i found that backward firing them worked the best. Ie, aiming the LED away from the LCD.. I covered the hole where the bulb came through with a piece of paper..

Those strip LEDs look pretty good, but they might be waaaay to bright.. i had to really back mine off so I could see at night :-)
Bill Terry
Tinkerer
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V8

Posts: 40
Reg: 09-2005

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 Friday, April 27, 2007 - 09:58 pm, by:  Bill Terry (Sideburns) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Cheers fellas,

In general though, what size LED would be easier/better to use for all the bulbs (ie AC unit, hazard, auto, volume etc) - 3mm or 5mm. Because im thinking that the 5mm may be a little too big for the hazrads etc.

What you all think?

BT
Kanchana Pathirana
TryHard
victoria
3ltr straight 6

Posts: 228
Reg: 02-2006

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 Saturday, April 28, 2007 - 12:13 pm, by:  Kanchana Pathirana (Kan83) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
well for the backlight there are three globes, i used
- i used six 5mm (two for each globe), but its a little bit to bright, either way up to you

for the lighting of the buttons
- used 5mm for each

for the lighting of the little squares above the top buttons
- used 5mm

for the auto shifter
-used 5mm for lighting the P,N,R,D,1,2
-for the little sqaures used 3mm

for the ect swtich, vol, basically the small buttons
- 3mm, you wouldnt able to fit 5mm anyway

you should be right
Kanchana Pathirana
TryHard
victoria
3ltr straight 6

Posts: 229
Reg: 02-2006

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 Saturday, April 28, 2007 - 12:17 pm, by:  Kanchana Pathirana (Kan83) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
and from memory i think i used 1K or 1.2K resistors for everything. definitely nothing lower than 1 K. you really need to limit the current because the leds will be too bright

anyway good luck
Bill Terry
Tinkerer
VIC
V8

Posts: 41
Reg: 09-2005

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 Saturday, April 28, 2007 - 02:41 pm, by:  Bill Terry (Sideburns) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
This may sound like a dumbass question but im looking at various LEDs that are pre wired with resistor etc on ebay, and some of the ads state "3mm 10Kmcd"

What exactly is this 10Kmcd business? Is it the resistor size? Or am i totally off base.

Thanks, BT
Bill Terry
Tinkerer
VIC
V8

Posts: 42
Reg: 09-2005

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 Saturday, April 28, 2007 - 03:12 pm, by:  Bill Terry (Sideburns) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Dont worry people - i think i have figured it out. Im pretty sure it refers to the brightness of the LED.

Thanks
Tai Johnsen
TryHard
QLD
UZZ31 - V8

Posts: 269
Reg: 04-2006

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 Sunday, April 29, 2007 - 11:42 am, by:  Tai Johnsen (Privatejohnsen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Yep, it's brightness.. Milli candella..

I used 3mm leds in the AC display and 5mm everywhere else.. (apart from the direct bulb replacements)

I also setup my AC display up with a potentiometer so I could vary the brightness ;)

can post pics if you need/want
Kanchana Pathirana
TryHard
victoria
3ltr straight 6

Posts: 230
Reg: 02-2006

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 Sunday, April 29, 2007 - 04:45 pm, by:  Kanchana Pathirana (Kan83) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
tai am impressed, wish i thought of that

could you post pics as well as the circuit diagram for your led/resistor and potentiometer setup
Tai Johnsen
TryHard
QLD
UZZ31 - V8

Posts: 272
Reg: 04-2006

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 Monday, April 30, 2007 - 06:45 pm, by:  Tai Johnsen (Privatejohnsen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
I just wired up 4 in series i think and ran a trimpot to a 12v rail i found..

Not the most elegant solution, but the leds draw stuff all current and you cant even tell they are on in the daytime.

I ran the trimpot out of the unit and tucked it up under the dash.

I also did the button backlights. See pics..


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Andrew Beshara
Tinkerer
Queensland
TT Soarer

Posts: 8
Reg: 07-2005

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 Sunday, January 06, 2008 - 08:02 pm, by:  Andrew Beshara (50rin) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Hey guys
i was just wondering if someone could point me in the right direction in regards to what sort of LEDs i should use with my AC display and buttons.
From reading the previous posts i'm aware of what sizes i should use but what mcd should i use and is there anything important that i should know?
from looking at http://www.ledsales.com.au/cart.php?target=category&category_id=44
i'm confused as to which LEDs i should use.
Any help is mostly appreciated

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