为啥我用舵机云台脱机的代码运行跟他实际电脑上通电的代码运行不一样。

我将LED屏模块与激光测距模块都放在一个代码上，为什么会出现这个呀

代码
import time
from pyb import UART

Always pass UART 3 for the UART number for your OpenMV Cam.

The second argument is the UART baud rate. For a more advanced UART control

example see the BLE-Shield driver.

uart = UART(3, 19200, timeout_char=200)

while True:
uart.write("Hello World!\r")
time.sleep_ms(1000)