Build: Mindstorms Train Controller

This new Mindstorms controller makes driving Lego trains a lot more fun. The main functions include: a throttle, a track switcher, a train horn, and an indicator light. You can increase or decrease the speed of the train by simply pushing or pulling the lever. You push the white button to switch the track back and forth. When the ultrasonic sensor "sees" the train it turns on the red color lamp to tell you that the train is near the station. To see the different functions please watch the video below.

Here is the video:www.youtube.com/watch?v=Fb7Hbjy4E0M&feature=youtu.be