SunFounder PiCar-4WD, Руководство пользователя

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tmp = scan_list [ 3 : 7 ]
print ( tmp )
if tmp != [ 2 , 2 , 2 , 2 ]:
fc . turn_right ( speed )
else :
fc . forward ( speed )
if __name__ == "__main__" :
try :
main ()
finally :
fc . stop ()
track_line.py
In this code, grayscale sensor module will judge the gray level of the floor under the car’s head. The car
adjusts the directions according to the detection values of these three detectors to follow the black line.
Note: About Grayscale judgement , refer to 「get_line_status()」in 「_init_.py」for more details.
import picar_4wd as fc
Track_line_speed = 20
def Track_line ():
gs_list = fc . get_grayscale_list ()
if fc . get_line_status ( 400 , gs_list ) == 0 :
fc . forward ( Track_line_speed )
elif fc . get_line_status ( 400 , gs_list ) == - 1 :
fc . turn_left ( Track_line_speed )
elif fc . get_line_status ( 400 , gs_list ) == 1 :