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| − | {{TOC right}}
| + | #REDIRECT [[Kart]] |
| − | == Ultrasound ranger ==
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| − | The [http://www.elecfreaks.com elecfreaks]
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| − | [http://www.elecfreaks.com/store/hcsr04-ultrasonic-sensor-distance-measuring-module-ultra01-p-91.html Ultrasonic sensor distance measuring module]
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| − | receives a trigger pulse, sends an ultrasonic pulse train and the provides a pulse whose length is proportional to the sound flight and echo time.
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| − | It has a dedicated [[Kart/sensor board#Ultrasound ranger|connector]] on the [[Kart/sensor board|I/O board]].
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| − | The <code>ultrasoundRanger</code> block in the <code>sensors</code> FPGA counts the ultrasonic pulse length in terms of the 10 MHz clock periods.
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| − | The distance is thus given by:
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| − | :: <math>distance = count \cdot 0.0017 ~ [cm]</math>
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| | [[Category:Kart]] | | [[Category:Kart]] |
