Once again YouTube member Almightyarjen has demonstrated some fascinating LEGO train automation, this time with controlling the "classic" LEGO 7866 level crossing kit. Doing so isn't that difficult, by placing a light or other sensor at a point in the track preceding the crossing an Arduino can detect the oncoming train.
With a simple L293D-based motor control circuit it's easy to control the boom gates, and of course control the flashing lights is even easier. The results are shown in the following video:
For many more interesting videos that take advantage of Arduino and LEGO - check out the YouTube channel. And for more, we're on facebook, Google+, and twitter - so follow us for news and product updates as well.
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