Lego Mindstorms Robotics Project: Junction
This is a Lego Mindstorms Robotics project called Junction.It features Ultrasonic Sensor (far right of the photo) as train detector. When the train is detected the bars are lowered at 90 degrees, bi-tonal sound alarm is emitted by the brick, and Light Sensor is used as a warning light. After a preset time of delay bars are raised back and sound and light stops afterwards. Simple cycle and parallel operations are introduced. (LEGO® MINDSTORMS® Sets used: LEGO MINDSTORMS NXT Education Base Set 9797 and LEGO Education Resource Set 9648.)(още…)