import sensor, image ,time from pyb import UART uart = UART(3, 9600) sensor.reset() sensor.set_pixformat(sensor.RGB565) sensor.set_framesize(sensor.QQVGA) # can be QVGA on M7... sensor.skip_frames(30) sensor.set_auto_gain(False) # must turn this off to prevent image washout... while(True): img = sensor.snapshot() img.lens_corr(1.8) # strength of 1.8 is good for the 2.8mm lens. for code in img.find_qrcodes(): print(code) if(code.payload()=='1'): uart.write("1") if(code.payload()=='2'): uart.write("2")