星瞳实验室APP,快速收到回复
  • 我们只解决官方正版的OpenMV的问题(STM32),其他的分支有很多兼容问题,我们无法解决。
  • 如果有产品硬件故障问题,比如无法开机,论坛很难解决。可以直接找售后维修
  • 发帖子之前,请确认看过所有的视频教程,https://singtown.com/learn/ 和所有的上手教程http://book.openmv.cc/
  • 每一个新的提问,单独发一个新帖子
  • 帖子需要目的,你要做什么?
  • 如果涉及代码,需要报错提示全部代码文本,请注意不要贴代码图片
  • 必看:玩转星瞳论坛了解一下图片上传,代码格式等问题。
  • 你们好,请问openMV4的串口通信能发出去但是串口接收不了?。



    • # Untitled - By: Administrator - 周五 十一月 6 2020
      
      # Single Color RGB565 Blob Tracking Example
      #
      # This example shows off single color RGB565 tracking using the OpenMV Cam.
      
      import sensor, image, time, math
      from pyb import UART
      threshold_index = 0 # 0 for red, 1 for green, 2 for blue
      
      # Color Tracking Thresholds (L Min, L Max, A Min, A Max, B Min, B Max)
      # The below thresholds track in general red/green/blue things. You may wish to tune them...
      thresholds = [(92, 100, -83, 127, -128, 127), # generic_red_thresholds
                    (30, 100, -64, -8, -32, 32), # generic_green_thresholds
                    (0, 30, 0, 64, -128, 0)] # generic_blue_thresholds
      
      sensor.reset()
      sensor.set_pixformat(sensor.RGB565)
      sensor.set_framesize(sensor.QVGA)
      sensor.skip_frames(time = 2000)
      sensor.set_auto_gain(False) # must be turned off for color tracking
      sensor.set_auto_whitebal(False) # must be turned off for color tracking
      clock = time.clock()
      
      while(True):
          clock.tick() # Track elapsed milliseconds between snapshots().
          img = sensor.snapshot() # Take a picture and return the image.
          uart = UART(3,9600)
          A=0
          for blob in img.find_blobs([thresholds[threshold_index]], pixels_threshold=20, area_threshold=20 ):
                  # These values depend on the blob not being circular - otherwise they will be shaky.
              A=blob.perimeter()
                  # These values are stable all the time.
              img.draw_rectangle(blob.rect())
              img.draw_cross(blob.cx(), blob.cy())
                  # Note - the blob rotation is unique to 0-180 only.
              #img.draw_keypoints([(blob.cx(), blob.cy(), int(math.degrees(blob.rotation())))], size=20)
      
          print("perimeter: %d" % int (A))
          if A >0:
            a=1
          else:
            a=2
          b=uart.write(str(a))
          print(b)
          print(a)
          print(clock.fps())
      
      

      0_1605323622087_捕获2.PNG 80068d6d.PNG)



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

      是按照视频步骤操作的吗?