SunFounder Pico-4wd car, Руководство пользователя

Страница: 34 / 67

SunFounder pico_4wd_car
After the code runs, if you push it to a cliff, it will be awakened urgently, then back up, and shake its
head to express dissatisfaction.
Note: If the result is not satisfactory, please modify the fourth line
car.
GRAYSCALE_EDGE_REFERENCE = 1000
.
This is a threshold that tells the car if the grayscale sensor detected values are below 1000, then it
should be considered a cliff and can move backward.
This threshold can be obtained in the Test the Grayscale Sensor Module section, for example, in my
test, the detected cliff value is basically around 700, so here it is set to 1000, as long as it is lower
than 1000, it can be considered to detect a cliff.
4. To enable Pico-4wd to run this code on boot, you need to save
donot_push_me.py
to the Raspberry Pi Pico
as
main.py
, as follows.
• Stop the script from running and click File -> Save as .
30 Chapter 1. Get Started