EVShield Controlled Double-Leaf Bascule Railway Bridge
 Showcase Your Creations   Started by LegoRobots   2015-12-12 03:07:09 -05:00   Comments: 1    Viewed: 1065

  1. LegoRobots
    LegoRobots Member Mowbray

    I have started work on another Bridge for my LEGO Railway layout, but this time I have built a Dual Track (Line), Double-Leaf Bascule Railway Bridge.

    Double-Leaf Bascule Railway Bridge

    A Bascule Bridge (commonly referred to as a drawbridge) is a movable bridge with a counterweight that continuously balances a span, or "leaf", throughout its upward swing to provide clearance for boat traffic. It may be single or double leafed.

    The name comes from the French term for balance scale, which employs the same principle. Bascule bridges are the most common type of movable span because they open quickly and require relatively little energy to operate, while providing the possibility for unlimited vertical clearance for marine traffic.

    Bascule bridges have been in use since ancient times. However, it was not until the adoption of steam power in the 1850s that very long, heavy spans could be moved quickly enough for practical application.

    I have used a Arduino Uno with an attached Mindsensors EVShield to Control the Bridge. When installed into the Train Layout, the Arduino with have a 'Bluetooth v4.0" module attached so it can interact with the Locomotives fitted with "sBricks" instead of a standard LEGO Power Functions Receiver. Also I will attach Signaling Lights to alert rail traffic of the Bridge's current status.

    The Bridge speed of movement will also be slow to make it appear more realistic. This will also take out a lot of the vibration in the bridge's deck when in motion. Despite what appears as a large (One LEGO Stud) distance between both bridge decks when the bridge is lowered, the Locomotives and Rolling-stock traverse it with no issues.

    For full project details, please visit: www.LegoMindstormsRobots.com
    LegoRobots, 2015-12-12 03:07:09 -05:00
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