EV3 sensors

EV3 SensorsSensors provide robots with information about their environment. With the sensors that come with the EV3, you can make a robot respond to being touched, react when someone or something comes too cl…

Using the Ultrasonic Sensor

Color Sensor:

Detects colours
Measures light intensity

The Color Sensor can detect the color of a surface (Color Mode), the amount of light reflected by a surface (Reflected Intensity Mode), or the brightness of ambient light (Ambient Light Intensity Mode). You can use the Color Sensor to detect the color of a surface, follow lines or respond to light signals.

Touch Sensor:

The Touch Sensor allows you to "feel" by detecting whether the red button on the sensor is currently pressed or released. The EV3 retrieves this information and can use it in programs. For example, you could program your robot to activate claws whenever the Touch Sensor is pressed.

Ultrasonic Sensor:

Measures distance
Detects objects

The Ultrasonic Sensor generates sound waves and reads their echo returns to detect and measure the distance to objects. The Ultrasonic Sensor can function as a sonar by sending out single sound waves. It can also listen for a sound wave which can be used to trigger programmed event/s.

Tips and Tricks

The Ultrasonic Sensor works best to detect objects with hard surfaces that reflect sound well. Soft objects, such as cloth, may absorb the sound waves and not be detected. Objects with rounded or angled surfaces are also harder to detect (e.g. soccer ball).
The sensor cannot detect objects that are very close to the sensor (closer than about 3 cm or 1.5 inches).
The sensor has a wide “field of view” and may detect a closer object off to the side instead of a farther object straight ahead.

Gyro Sensor:

Measures angles
Measures accumulated angles

The Gyro Sensor measures the robot's rotational motion and changes in its orientation. You can use the Gyro Sensor to measure angles, create balancing robots and explore technology associated with navigation systems, game controllers and gyroscopic stabilized platforms.

Information on sensors taken from: https://milweelegorobotics.weebly.com/31-class-discussion.html

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