Brickshelf Gallery - A set of semaphores I built in 2011 and photographed recently. I first saw the signal bridge by Jeramy S. and modified it to hold PF semaphores driven by an RCX brick and light sensors on each track, go up two levels for more trains- zephyr1934@yahoo.com

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A set of semaphores I built in 2011 and photographed recently. I first saw the signal bridge by Jeramy S. and modified it to hold PF semaphores driven by an RCX brick and light sensors on each track, go up two levels for more trains- zephyr1934@yahoo.com

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Folder Keywords: MOC Train Technic mindstorms RCX

Folder created: 2013/04/01 01:32:54
Folder modified: 2013/04/01 01:34:56

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