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  • 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。
  • openmv 和arduino无法通信



    • # Measure the distance
      #
      # This example shows off how to measure the distance through the size in imgage
      # This example in particular looks for blue pingpong ball.
      
      import sensor, image, time
      from pyb import UART
      import ujson
      
      # For color tracking to work really well you should ideally be in a very, very,
      # very, controlled enviroment where the lighting is constant...
      blue_threshold   = ((69, 88, -35, -15, -53, 0))
      # You may need to tweak the above settings for tracking green things...
      # Select an area in the Framebuffer to copy the color settings.
      
      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.
      
      
      uart = UART(1,9600)
      K=500#the value should be measured
      
      def find_max(blobs):
          max_pixels=0
          for blob in blobs:
              if blob[4] > max_pixels:
                  max_blob = blob
                  max_pixels = blob[4]
          return max_blob
      
      while(True):
          clock.tick()
          img = sensor.snapshot()
      
          blobs =img.find_blobs([blue_threshold])
          if blobs:
              max_blob = find_max(blobs)
              img.draw_rectangle(max_blob.rect())
              img.draw_cross(max_blob.cx(),max_blob.cy())
              pcx = max_blob.cx()
              pcy = max_blob.cy()
              cxy = {"cx":pcx,"cy":pcy}
              uart.write(ujson.dumps(cxy)+'\r\n')
              print(cxy)
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      
      

      #include <ArduinoJson.h>

      volatile int cx;
      volatile int cy;
      volatile char c;
      String json;

      void setup(){
      cx = 0;
      cy = 0;
      c = 0;
      json = "";
      Serial.begin(9600);
      }

      void loop(){
      if (Serial.available() > 0) {
      c = char(Serial.read());
      json = String(json) + String(c);
      if (c == '}') {
      StaticJsonBuffer<200> jsonBuffer;
      JsonObject& root = jsonBuffer.parseObject(json);
      if (!root.success()) {
      Serial.println("JSON failed!");
      }
      int cx = root["cx"];
      int cy = root["cy"];
      Serial.print("cx = ");
      Serial.print(cx);
      Serial.print('\t');
      Serial.print("cy = ");
      Serial.println(cy);
      json = "";
      }
      }
      }