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Results tagged with sensor-ultrasonic
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user 3498
Ultrasonic sensors emit sound waves at a frequency too high for humans to hear. They then wait for the sound to be reflected back, calculating distance based on the time required. The sensor is more accurate at measuring distances than the infrared sensor.
1
vote
Is it possible to use a LEGO NXT ultrasonic sensor for a LEGO train crossing?
As you suspected, you cannot use the Ultrasonic sensor without an "Intelligent Brick" (EV3 or NXT). MINDSTROMS would be a great way to automate your train if you are willing to make the investment.
F …
- 9,778
3
votes
EV3 Education does not recognize NXT ultrasonic sensor
EV3 Classroom only supports LEGO EV3 sensors. It does not work with NXT or 3rd-party sensors.
- 9,778
6
votes
Accepted
How do you program mindstorms to keep doing a task until either the IR OR the colour sensor ...
One way of doing this is using a loop and interrupting it.
How it works:
The "Loop Interrupt" block stops all blocks running inside of the loop, so by interrupting the loop after either wait block …
- 9,778