Learning Math/CS/Engineering Design with Robotics
LArduino Ultrasonic 7: Match Distance vs. Time Pattern
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Objective: Experiment with an ultrasonic sensor by matching the results of a pre-placed distance vs. time pattern. Overview: The pre-placed code uses a loop to get distance readings from the ultrasonic sensor at 1-second intervals for 10 seconds. It also keeps track of the time using a variable named "t," and uses the "point" block (from the Drawing section) to draw a red dot on the grid for each pair of (t, distance) values. Run the code, using your hand or a flat object (the flat object works best) to get different distance readings for the sensor and try to match the pre-placed pattern of blue points you see on the grid. Note that distances above 12 inches will not be displayed, because the grid is set up for a 12x12 display.
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| Grid Size: S M L | Simple View: | MinView: |
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| Grid: | 12x12 inches | 24x24 inches | 36x36 inches | |
| 72x72 inches | 96x96 inches | 192x192 inches | ||
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| Quad: | 1 Quadrant | 4 Quadrants | 1&4 Quadrants | |
| Units: | US Customary | Metric | Ruler: | |
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Run the code and use your hand or object to try to match the blue distance vs. time points pre-placed on the grid. |
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Pre-Board Workspace
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Post-Board Workspace
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