```
uname -a
Linux black 3.2.0-4-486 #1 Debian 3.2.46-1 i686 GNU/Linux
```

```
root@black:~# lsmod | grep pwc
pwc                    68160  0
videobuf2_vmalloc      12476  1 pwc
videobuf2_core         21683  1 pwc
videodev               61827  2 uvcvideo,pwc
usbcore               104793  30 ehci_hcd,uhci_hcd,btusb,uvcvideo,ohci_hcd,usbhid,cp210x,usbserial,pwc,snd_usbmidi_lib,snd_usb_audio
```

```
cat /sys/devices/pci0000:00/0000:00:1d.3/usb5/5-2/5-2:1.0/video4linux/video1/pan_tilt
0 0
echo "800 800" > /sys/devices/pci0000:00/0000:00:1d.3/usb5/5-2/5-2:1.0/video4linux/video1/pan_tilt
export PAN_TILT="/sys/devices/pci0000:00/0000:00:1d.3/usb5/5-2/5-2:1.0/video4linux/video1/pan_tilt"
echo "-7000 0" > $PAN_TILT
echo "7000 0" > $PAN_TILT
echo "0 0" > $PAN_TILT
echo "0 3000" > $PAN_TILT
echo "0 2500" > $PAN_TILT
\echo "0 0" > $PAN_TILT
  ```