Input the commands:
picar-4wd test servo
The arm of servo will rotate to the angle of 0, meanwhile the monitor will print the readings of ultrasonic
module once.
Note: You need to boot this function to check the direction of servo’s output axis when you assemble the
car and the servo.
Power Supply Detection
You can use the following command to get the supply voltage.
picar-4wd power-read
The supply voltage ought to be 6V~8.5V to ensure that the car works well.
Reset Controller
If you encounter some errors during your use, for example, the car don’t make response to your control
command of control terminal, you can try to reset HATS by using the following command.
picar-4wd soft-reset
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