系统迁移中,暂时无法访问,所有数据会迁移到新的网站。
OpenMV VSCode 扩展发布了,在插件市场直接搜索OpenMV就可以安装
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,需要报错提示与全部代码文本,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。
追踪人脸时,我在检测到人脸的条件下,驱动直流电机,但是代码编写后直流电机工作,但舵机不会转动去追踪人脸了?
-
import sensor, image, time import pyb from pid import PID from pyb import Servo pan_servo=Servo(1) pan_servo.calibration(500,2500,500) pan_pid = PID(p=0.04, i=0.01, imax=90) #脱机运行或者禁用图像传输,使用这个PID pinADir0 = pyb.Pin('P3', pyb.Pin.OUT_PP, pyb.Pin.PULL_NONE) pinADir1 = pyb.Pin('P2', pyb.Pin.OUT_PP, pyb.Pin.PULL_NONE) pinADir0.value(0) pinADir1.value(1) tim = pyb.Timer(4, freq=1000) chA = tim.channel(1, pyb.Timer.PWM, pin=pyb.Pin("P8")) sensor.reset() # Initialize the camera sensor. sensor.set_contrast(3) sensor.set_gainceiling(16) sensor.set_pixformat(sensor.GRAYSCALE) # use RGB565. sensor.set_framesize(sensor.QVGA) # use QQVGA for speed. sensor.set_vflip(True) sensor.skip_frames(10) # Let new settings take affect. sensor.set_auto_whitebal(False) # turn this off. clock = time.clock() # Tracks FPS. face_cascade = image.HaarCascade("frontalface", stages=25) def find_max(blobs): max_size=0 for blob in blobs: if blob[2]*blob[3] > max_size: max_blob=blob max_size = blob[2]*blob[3] return max_blob while(True): clock.tick() img = sensor.snapshot() faces = img.find_features(face_cascade, threshold=0.75, scale=1.25) if faces: face = find_max(faces) cx = int(face[0]+face[2]/2) cy = int(face[1]+face[3]/2) pan_error = cx-img.width()/2 print("pan_error: ", pan_error) img.draw_rectangle(face) # rect img.draw_cross(cx, cy) # cx, cy pan_output=pan_pid.get_pid(pan_error,1) print("pan_output",pan_output) pan_servo.angle(int(pan_servo.angle()+pan_output)) chA.pulse_width_percent(40) else: chA.pulse_width_percent(0)