How-to Library: Arduinos in Model Railroading – Part 3 Use servos to save your trains

In part 3 of this MRVP mini-series, Gerry Leone resumes his helpful instructions for working with an Arduino. This time Gerry shows how he harnessed their usefulness to solve a problem on his HO scale layout. Turns out the tiny devices really are powerful enough to stop a train in its tracks...or from flying off an open swing gate!

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