应该怎么用uart.write来发送数据呢？

[18852865532]

我的目的是通过颜色识别和返回舵机角度来确定目标位置，现在能通过uart.write函数返回字符串，但是不能返回一个变量所代表的值，请问问题出在哪里了呢？

import sensor, image, time,pyb
from pid import PID
from pyb import Servo
from pyb import UART

pan_servo=Servo(1)
red_threshold  = (13, 49, 18, 61, 6, 47)
pan_pid = PID(p=0.07, i=0, imax=90) #脱机运行或者禁用图像传输，使用这个PID
uart = pyb.UART(3, 115200, timeout_char = 1000)
#pan_pid = PID(p=0.1, i=0, imax=90)#在线调试使用这个PID

#tilt_pid = PID(p=0.1, i=0, imax=90)#在线调试使用这个PID
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=5
    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)
        pan_error = max_blob.cx()-img.width()/2

        print("pan_error: ", pan_error)
        img.draw_rectangle(max_blob.rect()) # rect
        img.draw_cross(max_blob.cx(), max_blob.cy()) # cx, cy

        pan_output=pan_pid.get_pid(pan_error,1)/2
        print("pan_output",pan_output)
        pan_servo.angle(pan_servo.angle()+pan_output)
        out_date=pan_servo.angle()+pan_output
        uart.write(out_date)
请在这里粘贴代码

[kidswong999]

https://singtown.com/learn/50235/

[18852865532]

多谢，已经解决了

[uc5f]

请问怎么解决的呢

[kidswong999]

@uc5f 看视频解决的。