frog0705's profile - activity

Great, thanks.

Yeah, that's good,but I want to display the end-effector's pose in real-time in RViz during dragging the interactive marker. Perhaps, MoveIt already has the function, I should learn more about it. Thank you.

Is there any GUI tool to set planning group's start state or goal state in MoveIt? We now can use API and interactive marker to control the arm.

Hello everybody,I wnat to build a robot arm dynamic model for the UR5(from Universal Robots) for torque_based collision detection,but i don't know what to do,thanks for any tips!

maybe,some cameras don't support all the control settings,so you can comment out the settings code,it will work well.

yeah,i got an answer: some camera don't support all the control settings.So you can comment out the settings code,it works well.

hi,everybody!! I am a college student ,i get an error when i use uvc_camera package.The error tips:

#

opening /dev/video0 pixfmt 0 = 'JPEG' desc = 'JPEG' discrete: 320x240:
discrete: 640x480:

int (Brightness, 0, id = 980900): 0 to 255 (1)

int (Contrast, 0, id = 980901): 0 to 255 (1)

int (Gamma, 0, id = 980910): 1 to 6 (1)

int (Exposure, 16, id = 980911): 781 to 18750 (1)

bool (Auto Gain, 8, id = 980912): 0 to 1 (1)

menu (Light frequency filter, 0, id = 980918): 0 to 2 (1)

0: NoFliker

1: 50 Hz

2: 60 Hz

int (Sharpness, 0, id = 98091b): 0 to 3 (1)

fd is 10

ioctl(fd, VIDIOC_S_CTRL, &c) return -1

unable to set control: Invalid argument

ERROR: could not set some settings.

unable to set control

select timeout in grab

select timeout in grab

##############################################

uvc_cam.cpp:

void Cam::set_control(uint32_t id, int val)

{

v4l2_control c;

c.id = id;

if (ioctl(fd, VIDIOC_G_CTRL, &c) == 0)

{

printf("current value of %d is %d\n", id, c.value);

//perror("unable to get control");

//throw std::runtime_error("unable to get control");

}

c.value = val;

if (ioctl(fd, VIDIOC_S_CTRL, &c) < 0)

{

printf("fd is %d\n",fd);

printf("ioctl() return %d\n",ioctl(fd, VIDIOC_S_CTRL, &c));

perror("unable to set control");

throw std::runtime_error("unable to set control");

}

}

#####################################################

my system is,ubuntu 12.04 LTS,with ROS fuerte

It pullzed me for a long time ,great thanks!!!!!