Welcome to Tiny:bit Pro repository
7.Car Headlights
Learning goal：
This lesson learns how to drive car headlights by Python programming.
Code:
1) Import the libraries needed for this routine: display is used to display the dot matrix, Image is used to display the built-in pattern, sleep delay time, and tinybit is used to drive the car.
2) display.show (Image.HAPPY) Make the micro:bit display a smiling face;
3) buildingbit.car_HeadRGB (255, 0, 0) Makes the front searchlight display. The first parameter is a red value with a range of 0 to 255. The second parameter is a green value with a range of 0 to 255. The third parameter is the blue value, which ranges from 0 to 255.
4) sleep (500) is a delay of 500 milliseconds. You can modify the corresponding value as needed. The smaller the value, the faster the color of the lamp can be switched.
Programming and downloading：
1.You should open the Mu software, and enter the code in the edit window, , as shown below.
Note! All English and symbols should be entered in English, and the last line must be a space.
2.You can click the “Check” button to check if our code has an error. If a line appears with a cursor or an underscore, the program indicating this line is wrong.
3.Click “REPL” button,check whether the tinybit library has been downloaded. If not, please refer to the [preparation before class]---> [Python programming]
4.Click the “Flash” button to download the program to micro:bit board.
If the program is wrong or the experimental phenomenon is wrong after downloading, please confirm whether you have downloaded the Buildingbit libraryhex file we provided to the micro: bit board.
For the specific method of adding library files, please refer to 【1.Preparation before class】---【Python programming】
Experimental phenomena:
After download is complete, open the power switch. A smile face appears on the micro:bit dot matrix. The headlight on the front of the car lights become red --> green --> blue --> white, time interval. Keep the loop in this state.