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JOSE
Fordmods - Getting Side Ways
Age:23
Posts: 2463
Joined: 07 Nov 2004
Location: geelong VIC, Australia
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 Posted: Sun Nov 07, 2004 9:12 pm Post subject: LED backlighting in EA-ED trip computer |
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| Got my trip comp in the other day (thanks chicken) and i decided i hated the original backlighting, $25 worth of Blue LED's and an afternoon later and its much improved, i took lost of pics, so one day i might write a doco on how to do it. See link for finished pics http://mikejose.tripod.com/Tripcomp.htm |
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Disco Frank
Fordmods Junkie
Age:29
Posts: 13776
Joined: 05 Nov 2004
Location: Perth WA, Australia
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| Posted: Sun Nov 07, 2004 9:22 pm Post subject: |
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very nice mate well done i say
but why the $25 worth of blue leds? how many u need |
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voxace
Technical Contributor
Age:23
Posts: 3097
Joined: 05 Nov 2004
Location: Ivanhoe NSW, Australia
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| Posted: Sun Nov 07, 2004 9:32 pm Post subject: |
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Yeah $25, wtf?
Where did you get the LEDs from?
I got about 40 LEDs and 40 Resistors + some heatshrink tubing for about $30. 8000mcd LEDs too! |
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JOSE
Fordmods - Getting Side Ways
Age:23
Posts: 2463
Joined: 07 Nov 2004
Location: geelong VIC, Australia
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| Posted: Sun Nov 07, 2004 9:51 pm Post subject: Yeh i know, |
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| There are no (that i know of) cheap electronics stores round here, so i had a choice $8.50 for 8000mCD Blue LED's from d**k smith electronics or $3.95 each for the same ones at Jaycar (i chose jaycar - dunno why DSE charges $4.55 for the little bag and info sheet). i used 4: 5mm 8000mCD and 4: 3mm 700mCD, to get a good even strong glow, for both the screen and the buttons, i coulda got away with it with less LED's but i couldnt be bothered having to add more later, plus each string of 4 gets 14.2 odd volts, thats 3.55 each, so they arent overdriven. Next will be the instrument cluster, i will probably use some Electroluminescent wire, or a couple of CCFL's to get that job done. |
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Jimmy
Fordmods Newbie
Donating Member
Age:24
Posts: 15
Joined: 05 Nov 2004
Location: NSW NSW, Australia
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| Posted: Mon Nov 08, 2004 9:48 am Post subject: |
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| how did you get it to be so bright. Voxace did it to his and it only lights up in the middle ??? |
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LTDHO
Fordmods - Getting Side Ways
Age:34
Posts: 585
Joined: 05 Nov 2004
Location: South eastern VIC, Australia
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| Posted: Mon Nov 08, 2004 10:43 am Post subject: |
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The premade ones are expencive. The are a straight swap over from the standard globe. But it saves you soldering, etc
I used them in my digital dash. I have a bag of ultra bright 5mm and 10mm LED's here with LED's. Just need to put them together. |
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JOSE
Fordmods - Getting Side Ways
Age:23
Posts: 2463
Joined: 07 Nov 2004
Location: geelong VIC, Australia
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| Posted: Mon Nov 08, 2004 11:09 am Post subject: |
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| Jimmy wrote: | | how did you get it to be so bright. Voxace did it to his and it only lights up in the middle ??? |
there are 3 5mm ultrabrights (with the tops filed off to create a more even light, and a wider beam angle) about 15mm behind the LCD screen, and i made a reflector assembly out of aluminum foil glued to cardboard behind there too. i had to remove the three plastic light carrier thingo's that light up the buttons to fit this though, hence the 3mm LED's to light the buttons. |
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na2fairlane
Fordmods - Getting Side Ways
Posts: 728
Joined: 05 Nov 2004
Location: perth WA, Australia
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| Posted: Mon Nov 08, 2004 11:21 am Post subject: |
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so this involves no resistors?
how did you know what voltage or whatever to get?
i definatly wanna try this one out |
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voxace
Technical Contributor
Age:23
Posts: 3097
Joined: 05 Nov 2004
Location: Ivanhoe NSW, Australia
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| Posted: Mon Nov 08, 2004 12:13 pm Post subject: |
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Jimmy remember all I have used so far is a crappy supercheap wedge globe LED.
Shall be bright when it gets a few 'proper' LEDs in... |
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4.9 EF Futura
Moderator
Age:27
Posts: 8658
Joined: 05 Nov 2004
Location: Adelaide CBD SA, Australia
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| Posted: Mon Nov 08, 2004 12:27 pm Post subject: |
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| Looks good Jose. Some nice work there! |
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JOSE
Fordmods - Getting Side Ways
Age:23
Posts: 2463
Joined: 07 Nov 2004
Location: geelong VIC, Australia
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| Posted: Mon Nov 08, 2004 4:35 pm Post subject: |
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| na2fairlane wrote: | so this involves no resistors?
how did you know what voltage or whatever to get?
i definatly wanna try this one out |
i measured the potential difference (voltage) across where the normal filament globe plugs in, i got 14.2 volts, i used 8 LED's in two series circuits 4 in each, therefore each lot of four had a 14.2V volt drop across them, divide this by 4 and you get 3.55V drop across each LED, design spec says nominal is 3.5V 0.05V overdriven isnt gonna reduce their life span by any great amount so its all OK, and just drew the power for them from where the filament lamp goes, |
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japa62
Fordmods Parts Gopher
Donating Member
Age:46
Posts: 95
Joined: 05 Nov 2004
Location: Redcliffe QLD, Australia
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| Posted: Mon Nov 08, 2004 7:02 pm Post subject: |
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Well done Jose. I have been playing with constructing some wedges, fingers are just to big. Have been playing with the same idea as you have done. Now I know that the wedges are just not up to the job.
The rest of the dash should be a bigger challenge but you have proven that implanting the leds in this manner is the way to go.
Thanx's |
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na2fairlane
Fordmods - Getting Side Ways
Posts: 728
Joined: 05 Nov 2004
Location: perth WA, Australia
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| Posted: Mon Nov 08, 2004 8:27 pm Post subject: |
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| so does it still dim with the dash lights and the stereo? i wouldnt want to lose that feature, nothing worce than being blidned when driving at night |
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japa62
Fordmods Parts Gopher
Donating Member
Age:46
Posts: 95
Joined: 05 Nov 2004
Location: Redcliffe QLD, Australia
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| Posted: Mon Nov 08, 2004 8:48 pm Post subject: |
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| na2fairlane wrote: | | so does it still dim with the dash lights |
Yep
[quote="jose"] and just drew the power for them from where the filament lamp goes[\quote]
Power from the same source.
| na2fairlane wrote: |
and the stereo? i wouldnt want to lose that feature, nothing worce than being blidned when driving at night |
Bugger, missed that wire. Shall have to think about what I can do with that wire  |
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na2fairlane
Fordmods - Getting Side Ways
Posts: 728
Joined: 05 Nov 2004
Location: perth WA, Australia
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| Posted: Tue Nov 09, 2004 1:31 am Post subject: |
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| another question, does ur dimmer work on them? is that voltage the voltage when dimmer is set to full brightness? |
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brett351
Fordmods Stock as a Rock
Age:38
Posts: 191
Joined: 06 Nov 2004
Location: sydney NSW, Australia
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| Posted: Tue Nov 09, 2004 5:23 am Post subject: |
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| Looks pretty, I like it |
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JOSE
Fordmods - Getting Side Ways
Age:23
Posts: 2463
Joined: 07 Nov 2004
Location: geelong VIC, Australia
View User Gallery (4)
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| Posted: Tue Nov 09, 2004 11:28 am Post subject: |
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| na2fairlane wrote: | | another question, does ur dimmer work on them? is that voltage the voltage when dimmer is set to full brightness? |
I dont think the dimmer works, i probably messed something up somewhere, yes the 14.2 volts i measured was with dimmer at full brightness, it isnt really that bright, (unless you have night blindness or whatever they call it).
Can someone (voxace) who got their LEDS for cheap get in contact with me, im planning my instrument cluster mod next, and need about 40 blue and 8 red LED's for it ( 2 in each oil/fuel/temp/volt gauge, 8 in each tacho/speedo, and 8 for the front lightning, with red for lighting the red tacho zone, the odometer, and the text under the gauges |
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na2fairlane
Fordmods - Getting Side Ways
Posts: 728
Joined: 05 Nov 2004
Location: perth WA, Australia
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| Posted: Tue Nov 09, 2004 3:09 pm Post subject: |
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ive posted on this twice since what has shown up and neither of them apeared? whats with that?
ok and now the two previous posts are back.. somthing very strange .. |
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evil6
Fordmods Parts Gopher
Age:24
Posts: 72
Joined: 08 Nov 2004
Location: Perth WA, Australia
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| Posted: Wed Nov 10, 2004 11:12 am Post subject: |
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good work mate. i tried to put green led's in my dash but i think coz they wer from supercrap auto they wer hell dim and the orange still came through. so if i get brighter will it f**k off that horrible orange s**t?
e6 |
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JOSE
Fordmods - Getting Side Ways
Age:23
Posts: 2463
Joined: 07 Nov 2004
Location: geelong VIC, Australia
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| Posted: Wed Nov 10, 2004 3:20 pm Post subject: |
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| evil6 wrote: | good work mate. i tried to put green led's in my dash but i think coz they wer from supercrap auto they wer hell dim and the orange still came through. so if i get brighter will it f**k off that horrible orange s**t?
e6 |
Yeh they will, but you may have to play around with how they are mounted, as the place where the normal filament lamps go is too far away for LED's to light it all up properly. they have to be a lot closer |
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