救急，我编了一个识别绿色后驱动电机轴转90度的程序，但不知道哪里出了问题。程序如下，连接图也在下面。

[bp6z]

import sensor, image, time

from pyb import Servo
s1 = Servo(1)

red_threshold = (30, 100, -64, -8, -32, 32)

sensor.reset() # Initialize the camera sensor.
sensor.set_pixformat(sensor.RGB565) # use RGB565.
sensor.set_framesize(sensor.QQVGA) # use QQVGA for speed.
sensor.skip_frames(10) # Let new settings take affect.
sensor.set_auto_whitebal(False) # turn this off.
clock = time.clock() # Tracks FPS.

def find_max(blobs):
max_size=0
for blob in blobs:
if blob[2]*blob[3] > max_size:
max_blob=blob
max_size = blob[2]*blob[3]
return max_blob

while(True):
clock.tick() # Track elapsed milliseconds between snapshots().
img = sensor.snapshot() # Take a picture and return the image.

blobs = img.find_blobs([red_threshold])
if blobs:
    max_blob = find_max(blobs)
   

    img.draw_rectangle(max_blob.rect()) # rect
    img.draw_cross(max_blob.cx(), max_blob.cy()) # cx, cy

   
    s1.angle(90)

[kidswong999]

什么问题？具体的现象是什么？你要问什么？

帖子需要目的，你要做什么？