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Added content authored by Peder Kronsgaard Detlefsen's avatar Peder Kronsgaard Detlefsen
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lab-report-notebook-2.markdown
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...@@ -51,7 +51,7 @@ This shows us that the NXT continually fetches data each 30 ms, even while the p ...@@ -51,7 +51,7 @@ This shows us that the NXT continually fetches data each 30 ms, even while the p
### Exercise 3 ### Exercise 3
It is possible to measure a distance of 254 cm when placing the NXT on the floor 254 cm away from a large wooden box with a smooth uniform surface. It also requires a surface which is orthogonal with the sensor. It is possible to measure a distance of 254 cm when placing the NXT on the floor 254 cm away from a large wooden box with a smooth uniform surface. It also requires a surface which is orthogonal with the sensor.
![254 measurements](http://i.imgur.com/oaYtwFm.jpg) ![254 measurements](http://i.imgur.com/iSWxEHV.jpg)
> Here we managed to measure a distance of 254 cm. > Here we managed to measure a distance of 254 cm.
On an upwards angled wall the NXT could not measure beyond 101 cm and using a large plant container the limit was 175 cm. On an upwards angled wall the NXT could not measure beyond 101 cm and using a large plant container the limit was 175 cm.
...@@ -59,7 +59,7 @@ On an upwards angled wall the NXT could not measure beyond 101 cm and using a la ...@@ -59,7 +59,7 @@ On an upwards angled wall the NXT could not measure beyond 101 cm and using a la
![Angled wall measurement](http://i.imgur.com/pRkejJE.jpg) ![Angled wall measurement](http://i.imgur.com/pRkejJE.jpg)
> At this angled wall we could only measure up to 101 cm. > At this angled wall we could only measure up to 101 cm.
![Plant measurement](http://i.imgur.com/RCVsh5C.jpg) ![Plant measurement](http://i.imgur.com/Wgo3flF.jpg)
> At this plant we could measure up to 175 cm. > At this plant we could measure up to 175 cm.
Using the speed of sound (340,29 m/s) and the max distance of 255 cm we can calculate the time limit of the sensor: Using the speed of sound (340,29 m/s) and the max distance of 255 cm we can calculate the time limit of the sensor:
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