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en:netzer:hc-sr04 [2014/10/03 17:31] svesch [Detecting the distance to an object with an ultransonic sensor] |
en:netzer:hc-sr04 [2014/10/03 17:32] svesch [IO3] |
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| With the capture capability of Netzer a simple ultrasonic sensor like the HC-SR04 module can be used. | With the capture capability of Netzer a simple ultrasonic sensor like the HC-SR04 module can be used. | ||
| - | <imgcaption labeltext|Ultrasonic sensor HC-SR04>{{:en:netzer:hc-sr04_front.jpg}}{{:en:netzer:hc-sr04_back.jpg?direct|}}</imgcaption> | + | <imgcaption sensor_photo|Ultrasonic sensor HC-SR04>{{:en:netzer:hc-sr04_front.jpg}}{{:en:netzer:hc-sr04_back.jpg?direct|}}</imgcaption> |
| For that reason the sensor shall be connected like: | For that reason the sensor shall be connected like: | ||
| Line 19: | Line 19: | ||
| Datasheet of the sensor states that at least 10 µs pulse must be generated to start the measurement. | Datasheet of the sensor states that at least 10 µs pulse must be generated to start the measurement. | ||
| - | <imgcaption labeltext|Configuration of IO3 for trigger>{{io3config_ultrasonic.gif}}</imgcaption> | + | <imgcaption io3_config|Configuration of IO3 for trigger>{{io3config_ultrasonic.gif}}</imgcaption> |
| Due to the ultrasonic sensor has a resolution of about 0.3 cm it is sufficient to configure the resolution to 800 ns. The maximum values to measure (18 meters) are more than enough for the maximum of 3 meters the sensor will return. | Due to the ultrasonic sensor has a resolution of about 0.3 cm it is sufficient to configure the resolution to 800 ns. The maximum values to measure (18 meters) are more than enough for the maximum of 3 meters the sensor will return. | ||
