V2 Specifications & Examples
Last updated
Last updated
Parameter Description | Parameter |
Sensor Type | I2C |
I2C Address | 0x39 |
Sensor Part | TMD37821 |
Measurement Channels | Red, Green, Blue, Alpha, and Proximity |
Parameter | Min | Typ | Max | Units |
Operating Voltage Range | - | - | 3.3 | V |
Proximity Sensor Range | 5 | - | 25 | cm |
All dimensions are in millimetres.
The REV Robotics Color Sensor has two sensing elements, proximity and color.
Proximity measurements are based on IR reflectance and can vary depending on lighting conditions and target reflectivity.
Color measurements consist of Red, Green, Blue, and Alpha (clear) values. The white LED on the sensor has a slide switch to turn the LED on or off. Unlit targets are best illuminated with the build-in LED while bright or light-emitting targets may not require the build-in LED. Color data is best collected within 2cm of the target for the strongest color differentiation.
When working with the Color Sensor V2 configure your robot to use the "REV Color/Range Sensor" as shown in the image below.
In this example, the Color Sensor V2 is configured on I2C bus 2. The Color Sensor V2 can be configured on any of the I2C busses.
Recall that I2C sensors must have different addresses in order to operate on the same bus.
This program shows the values from the Color Sensor on your phone. Your team will need to figure out the logic to use this information in your program. Below there are three examples of different color modes and their readings. Light Detected mode will read the amount of light on the sensor from 0-1.0. Because the sensor is close to a surface, the LED in the sensor reads 1.0 in the examples.
The code assumes that the Color Sensor was configured with the name “Color.”
Additional information about the TMD37821, its capabilities, and its features can be found in the following datasheet: