Now includes more control of a USB web camera, may depend on model of camera.
Note controls based on a Philips SPC900NC, Philips PCVC740K ToUcam Pro and Logitech C270 webcams, others may vary.
If you have a diffferent model then try 'v4l2-ctl -L' command in terminal as see what controls it lists.
If different upload the results to here and I will look at modifying the script to suit.
10f2 USB webcam Auto_Gain added
10f3 I found an issue with the webcam display and zoom, needs more work but OK with the 2 cameras above.
10f4 Issue with USB webcam CAL, hopefully fixed
10f5 Hist (stretch histogram) added for noisy images, main use webcams. Note still only supports webcams named above.
10f6 one more option to Hist added, some bug fixes
10f7 Control of Logitech C270 added. Set USE_PI_CAM = 0, WEBCAM = 1, USB_MAX_RES = 4.
10f8 minor bug fix to user config
10f9 control of Sainsmart USB 4 relay card added (you need to install crelay http://ondrej1024.github.io/crelay/
See here for help installing crelay if required. https://www.raspberrypi.org/forums/view ... p?t=216670