3.1 Color response

1. Learning objectives

In this course. The K210 vision module performs color recognition. When any one of the colors red, yellow, blue and green is recognized, the car searchlight will light up with the corresponding color.

2. Preparation for class

1. Remove the TF card from the k210 vision module and insert it into the card reader.

2. Plug the card reader into the computer, and wait for the computer to recognize the USB disk.

3. Then, enter the TF card. You will see following content.

4. Go to the k210 folder, find the 3.1_color_rgb.py file from the folder and copy it to the root directory.

5. Delete the original main.py file.

   Then, re-name the 3.1_color_rgb.py file as the main.py file.

6. After re-name, pull out the card reader, remove the TF card and insert it back into the k210 vision module.

3. Programming Methods

Online programming: first copy this URL https://makecode.microbit. and enter the online programming interface.

Click Extension, copy the package URL: https://github.com/YahboomTechnology/K210-Module.git to the input field, click Confirm to add package,

Click Extension again, copy the package URL: https://github.com/YahboomTechnology/Tiny-bitLib to the input field, click Confirm to add the package.

Finally you can use the K210 Vision Module package and Tinybit's building blocks.

4. Blocks

5. Code

6. Download code

Connect the Micro:bit board to the computer via microusb cable, the computer will pop up a USB stick.

Then, select the k210_color.hex code and right click to send it to the Micro:bit U disk.

Wait until sending is complete and unplug the Micro:bit usb cable. Plug the Micro:bit board into the car.

7. Experimental phenomena

After starting the car, wait for the screen to display the camera image.

After displaying the screen, point the camera at the color to be identified, and when any one of the red, yellow, blue and green colors is identified, the trolley searchlight will light up with the corresponding color.