运行helloworld.py例程，图像显示正常，一段时间后（几秒到几分钟不等），图像卡死，内置储存u盘被弹出？
# Hello World Example
#
# Welcome to the OpenMV IDE! Click on the green run arrow button below to run the script!
import sensor, image, time
sensor.reset() # Reset and initialize the sensor.
sensor.set_pixformat(sensor.RGB565) # Set pixel format to RGB565 (or GRAYSCALE)
sensor.set_framesize(sensor.QVGA) # Set frame size to QVGA (320x240)
sensor.skip_frames(time = 2000) # Wait for settings take effect.
clock = time.clock() # Create a clock object to track the FPS.
while(True):
clock.tick() # Update the FPS clock.
img = sensor.snapshot() # Take a picture and return the image.
print(clock.fps()) # Note: OpenMV Cam runs about half as fast when connected
# to the IDE. The FPS should increase once disconnected.
教程里的lcd是不是无法使用了？
https://book.openmv.cc/shield/lcd.html
# LCD Example
#
# Note: To run this example you will need a LCD Shield for your OpenMV Cam.
#
# The LCD Shield allows you to view your OpenMV Cam's frame buffer on the go.
import sensor, image
import lcd
sensor.reset() # Initialize the camera sensor.
sensor.set_pixformat(sensor.RGB565) # or sensor.GRAYSCALE
sensor.set_framesize(sensor.QQVGA2) # Special 128x160 framesize for LCD Shield.
lcd.init() # Initialize the lcd screen.
#lcd初始化
while(True):
lcd.display(sensor.snapshot()) # Take a picture and display the image.
#将图像显示在lcd中
数字识别里面用tf为什么会报这样的错？
This code run in OpenMV4 H7 or OpenMV4 H7 Plus
import sensor, image, time, os, tf
sensor.reset() # Reset and initialize the sensor.
sensor.set_pixformat(sensor.GRAYSCALE) # Set pixel format to RGB565 (or GRAYSCALE)
sensor.set_framesize(sensor.QVGA) # Set frame size to QVGA (320x240)
sensor.set_windowing((240, 240)) # Set 240x240 window.
sensor.skip_frames(time=2000) # Let the camera adjust.
clock = time.clock()
while(True):
clock.tick()
img = sensor.snapshot().binary([(0,64)])
for obj in tf.classify("trained.tflite", img, min_scale=1.0, scale_mul=0.5, x_overlap=0.0, y_overlap=0.0):
output = obj.output()
number = output.index(max(output))
print(number)
print(clock.fps(), "fps")
openmv里头是否含有builtins模块，我看说明文档在内置函数提了，但是没有找到
执行这两句话代码，IDE直接就闪退了。。。，而且import builtins 的高亮颜色也不对，比如和import sensor 的颜色不一样
怎么更好地识别颜色，每次选好一种颜色的阈值，但是总是被环境的其他颜色干扰
https://book.openmv.cc/example/21-Sensor-Control/sensor_manual_whitebal_control.html
手动控制一下白平衡。这样每一次都是一样的亮度，但是换一个环境就变了。
帧缓冲区画图，显示文字问题
变量一样可以转成字符串。
import sensor, image, time
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time = 2000)
clock = time.clock()
while(True):
clock.tick()
img = sensor.snapshot()
a = clock.fps()
img.draw_string(10,10,str(a),scale=2)
识别色块的时候，阈值会受光线影响，我现在识别的阈值挺准的，过一会就不行了，有没有什么方法？
你可以把阈值的范围调大。
即使把现在的sensor参数全部固定住，你明天或者天黑了也都不一样了。
openmv 5V供电能承受两台舵机和wifi模块热点模式同时工作时的电流吗？
舵机直接连接传感器扩展板，底下的三排引脚。
来自星瞳实验室APP: OpenMV传感器扩展板 https://singtown.com/product/49896/openmv-sensor-shield/