09-21-2009, 12:48 AM
I had to test my new workbench, so decided to see how buildable a simple signal would be. I guess I should warn you of the poor graphics and photography.
The plan:
Making use of the directionality of LEDs, one needs only two wires to have two leds light up in two different ways, by changing polarity. As building in N makes it difficult to hide unnecessary wiring, this seems like a good thing. LEDs have the nice tendency to come with legs which could double as a post to put the signal on, they are a bit on the short side, but I guess they could be repaced by brass rod without too much trouble. As these signals are mostly for testing and practising purposes, I didn't worry about that. Also the bottom LED is sunnywhite (too bright, too) and not green as it should. The two posts are connected with bits of styrene rod which especially after painting hides the fact that they are only pieces of the LED.
Here proof that the signals work. Also proof that they are a bit too short next to the coach.
The plan:
Making use of the directionality of LEDs, one needs only two wires to have two leds light up in two different ways, by changing polarity. As building in N makes it difficult to hide unnecessary wiring, this seems like a good thing. LEDs have the nice tendency to come with legs which could double as a post to put the signal on, they are a bit on the short side, but I guess they could be repaced by brass rod without too much trouble. As these signals are mostly for testing and practising purposes, I didn't worry about that. Also the bottom LED is sunnywhite (too bright, too) and not green as it should. The two posts are connected with bits of styrene rod which especially after painting hides the fact that they are only pieces of the LED.
Here proof that the signals work. Also proof that they are a bit too short next to the coach.
-norm