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如果涉及代码，需要报错提示与全部代码文本，请注意不要贴代码图片
还有硬件型号是什么？
import time from pyb import UART
uart = UART(3, 19200)
while(True): uart.write("Hello World!\r") time.sleep_ms(1000)
硬件型号是什么？是正版的OpenMV吗？
