To create a simple wifi telerobot with OrangePi PC.
The frame of our robot and serval wheels, an USB camera, an USB wireless network adropter, Motor driver (L298N), some wire jumper , a 18650 bettery and bettery holder (5v2a output), a voltage stabilizing module (XL6009E1) and our OrangePi PC x1
Using GPIO PA7 to PA10 for the motor control signal output
Using PG8 for the LED light control signal output
Check if your device was been identified：
ls /dev/vi* #SEe if there has "/dev/video0" Check mounted usb dev in sys：
lsusb
Bus 004 Device 003: ID 1908:2311 GEMBIRD #You will see you usbcam device here board：OrangePi PC
system： Lubuntu which officially provided by OrangePi
package：mjpg-streamer
location：https://github.com/jacksonliam/mjpg-streamer.git
Shooting depenedncy:（https://github.com/jacksonliam/mjpg-streamer）：
gcc and g++ already installed in Lubuntu，so skip to install cmake and libjpeg8-dev：
sudo apt-get install cmake libjpeg8-dev cd mjpg-streamer-experimental，make and install：
make
sudo make install When installation finished you will see a lot of file with .so postfix（which mean the plugins of mjpg-streamer）：
show help info：
mjpg_streamer -h check the usage of the plugin "input_uvc.so"
mjpg_streamer -i "input_uvc.so -h" In the directory there has a start script I try to run it:
./start.sh But it was fail when try to init :
MJPG Streamer Version: git rev: 501f6362c5afddcfb41055f97ae484252c85c912
│ i: Using V4L2 device.: /dev/video0
│ i: Desired Resolution: 640 x 480
│ i: Frames Per Second.: -1
│ i: Format............: JPEG
│ i: TV-Norm...........: DEFAULT
│Unable to set format: 1196444237 res: 640x480
│Init v4L2 failed !! exit fatal
│ i: init_VideoIn failed Seem the format is not correct, the Format is JPEG
It is clearly not match to my usbCam. (my usbCam is not using JPEG format)
I use -h option to see the parameter of the plugin "input_uvc.so" and try serval format and I found the format YUV will work (use -y) !
mjpg_streamer -i "input_uvc.so -d /dev/video0 -y" -o "output_http.so -p 8090" GOOD！
Lets access to the webcam using the follow url：