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Analog and Digital
Analog and Digital Sensors
| Term | Definition |
|---|---|
| Analog Sensors | Line tracking/follower sensor, potentiometer, light sensor |
| Digital Sensors | Bumper, Quadrature Encoder, Limit Switch, Green LED, Sonar/Ultrasonic range finder |
| What uses a photcell resistor? | Light Sensor |
| What has a min and max? | Potentiometer |
| Operates from 0-4095 | All Analog sensors, the Line Tracker/Follower sensor, potentiometer, light sensor |
| what uses a variable resistor to output a current? | Potentiometer |
| The value goes up as it gets darker | Light Sensor |
| What sensor usually does not get to 4095? | Light Sensor due to radiation |
| Measures contrast or brightness | Line Tracker/Follower |
| Measures specific areas, using depth and polarized lens | Line Tracker/Follower |
| What are both touch sensors? | Bumper and Limit switch |
| Both read 1 when pressed and 0 not pressed | Bumper and Limit Switch |
| How many slits are in a Quadrature Encoder? | 90 |
| What is a optical sensor that reads 1 when a slit passes? | Quadrature Encoder |
| Reads 0 when there are no slit and this process continues and counts up | Quadrature Encoder |
| 2^15 AKA 32767 | Quadrature Encoder |
| Turns an LED on and reads either 1 or 0 | Green LED |
| Acts like a sensor to know where you are in the program | Green LED |
| Above audible range for humans, therefore goes above 20-20,000 Hertz | Sonar or Ultrasonic Range Finder |
| This operates to about 3 meters | Ultrasonic Range finder |
| Operates at 40,000 Hertz | Ultrasonic Range Finder |
| Difference between Motor and Servo | Motor spins continuously while the servo spins at a certain angle. (Usually halfway 180 degrees) |
| Why can the limit switch arm be bent? | Creates a more ideal hit area |
| What can both touch sensors do? | Spring back to an 'open position' |
| What does the potentiometer measure? | measures rotation of a shaft between 0 and 265 degrees |
| What does the potentiometer cortex measure? | Values of 0-40965 |
| What prevents the potentiometer from turning a full rotation? | Internal mechanical stop |
| What does excess torque in the Potentiometer do? | Against the internal mechanical stop will cause them to wear away |
| What happens when you switch the direction the potentiometer is facing? | Switch the direction it counts, Counter clockwise- 0 to 4095 and Clockwise is 4095-0 |
| What units does the cortex resolution in the Ultrasonic Range finder reads? | inches, cm, mm |
| Distance value for the Ultrasonic Range Finder | 0-648cm |
| What does the Ultrasonic Range Finder base distance calculations from? | sound, soft objects absorb while sharp objects deflects |
| What does the Ultrasonic Range Finder read? | inches, cm, raw, mm |
Created by:
GiannaA174
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