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Author Topic: Working tail lamps?  (Read 425 times)

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Offline njee20

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Re: Working tail lamps?
« Reply #15 on: March 29, 2020, 10:24:00 AM »
eBay is absolutely full of cheap electronic bits. I've found Bright Components very good for cheap LEDs etc.

Online Phoenix

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Re: Working tail lamps?
« Reply #16 on: March 29, 2020, 02:04:06 PM »
 :hellosign:

The tutorial by Kirky is excellent. There is also one by Caz, but I had a look and could not find it.

I have used LEDs and fibre optics for projects with tiny lights, and the actual molded lamp was on the peco level crossing gates.

I used a tiny LED from https://www.railroomelectronics.co.uk/



With careful drilling the LED will fit in the lamp





The full tutorial is here

 https://www.ngaugeforum.co.uk/SMFN/index.php?topic=45048.msg564457#msg564457

I don't see why this would not work on a tail light. :hmmm:

Alternatively you could use the molded lamp with a fibre optic running to it, which I did for this little hut ....



A bigger LED with a resistor added was in the hut, and a short length of fibre optic went to the lamp.

Just for that little length I had to buy 7m of fibre optic :doh: so have loads to spare. I would be very happy to pop some in the post to you if you go down this route  :D

All best wishes

Kevin

 :beers:


« Last Edit: March 29, 2020, 02:09:35 PM by Phoenix »

Online ntpntpntp

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Re: Working tail lamps?
« Reply #17 on: March 29, 2020, 02:38:33 PM »
Not sure why Railroad Electronics suggest so high a current though on their packaging?   The micro SMD LEDs 0402, 0603 etc. don't need anywhere near 20mA.   In my experience 5mA is plenty for most applications. 

Even standard 3mm and 5mm LEDs are perfectly fine on 10mA - 15mA these days.
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