Both LEGO™ NXT sound sensors were placed at the
same distance from the speaker. A very simple LabVIEW
NXT toolkit was run in debugging mode, in order to display the values on the
PC screen and keep the NXT alive (Fig. 3). The frequency and the signal
amplitude were gradually changed and the sensor readings were noted manually and
entered into an Excel-file and also into a LabVIEW 3D-graph program (that we do
not reproduce here). (Fig. 4 and 5) show the different graphs in 3D for the
frequencies 100..1000Hz.
we could use this logic, when the sound sensor detects the sound indicating the start of the race that would be the starting condition for the program
ps. i know that we do not use the same programming as in the picture
sounds like for your application you might want to use the Log Angle (red/blue/green) nodes to acquire your data. This lets
you sample at a specific rate for a given amount of time and saves the data to
a file called RedData.dat, BlueData.dat or GreenData.dat depending on the color
of the Log Angle you chose
The Ultrasonic Sensor uses the same scientific principle as bats: it measures distance by calculating the time it takes for a sound wave to hit an object and return – just like an echo
im very sure that you can use more than one sensor but ill see if i an find something on it now
The Touch Sensor reacts to touch and release, enabling your LEGO® MINDSTORMS® NXT robotic creation to "feel" like never before! It can detect single or multiple button presses, and reports back to the NXT Intelligent Brick