I would like a source of how to teak the exposure time of a webcam. Recently I recovered an old web cam from the garbage of my office and for my surprise it works perfectly. It is a
VCOM NetCam PD-308 webcam with a broken case but the circuitry is just fine. The chipset is an Etoms ET31X110 and the sensor is a CMOS chip whose number I currently ignore.
Probing with my oscilloscope I was able to identify the exposure signal and I noticed that it is software controlled. I mean, the driver of the web cam controls its exposure time. My question is: Is it possible to configure the driver to set up the exposure time to, let us say, 2 seconds or is there a software able to do so? Or do I have to build an oscillator circuit to force the desired exposure?
I just want to take my first steps in astrophotography by playing with a cheap webcam. I do not expect great photos, but just to get started with the principles behind digital imaging, et cetera.
Thanks for any help.