| |
Hi everybody,
Mark Riley wrote:
> I think I've seen some old 12V LEGO train stuff
> on Brickshelf with just red and green signals.
Correct. 7860 is the set number. A quick Google search turned up mostly
auctions and sales pages, no useful description of this set, so here go
some basics for the interested ...
Both the red and green light are controlled through just two wires. If
you apply 12V DC one of the lights will come on. If you reverse polarity,
the other will come on. So, only one can be on at a a time, unless you
apply AC. But I think it makes no sense to light both red and green at
the same time anyway. I don't know how suitable such a red/green light
brick would be for DCC applications.
Given the fact that I know how hard it will be to modify 12V train motors
for DCC I don't plan to go into DCC any time soon. On the other hand, the
reduced wiring clutter would be a clear advantage, given the amount of
remote controlled stuff I usually have in my layouts ...
<http://horst-lehner.mausnet.de/lego/bahn/Layout2003:04.JPG>
Greetings
Horst
|
|
Message has 2 Replies:
 | | Re: DCC Controlled Signal
|
| (...) Could you use a "bi-color" LED this way? Polarity one way, light is red. Polarity the other way, light is green. Polarity alternating, yellow! (Ok, that last part is probably a pipe-dream... <grin>) Can DCC output a voltage with either (...) (20 years ago, 21-Oct-04, to lugnet.trains, lugnet.parts.mod)
| | | Re: DCC Controlled Signal
|
| (...) Hi Horst, that's a great picture. Yeah, that's what I've been striving for, a layout of roughly that complexity and automation, but without nearly as many wires. The remote controllers (along the bottom of the picture) being replaced by the (...) (20 years ago, 22-Oct-04, to lugnet.trains, lugnet.parts.mod, FTX)
|
Message is in Reply To:
| | Re: DCC Controlled Signal
|
| (...) Thank you, John! (...) Each of the lights is independently controllable. You can even instruct the DCC controller to blink the lights in various patterns. I'll be working on software to provide an interlock so that only the red or green can be (...) (20 years ago, 21-Oct-04, to lugnet.trains, lugnet.parts.mod, FTX)
|
14 Messages in This Thread:
 
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
