My name is Asle, I am a 33 year old mechanical engineer, and unfortunately, equipped with seriously limited programming skills.
I have been asked by a friend and to upgrade the electronics on her indoor running target range (See pictures of different systems here) https://www.google.no/search?q=running+target+wiki&source=lnms&tbm=isch&sa=X&ei=kOguUoTKHsfFswbDpICoBQ&ved=0CAkQ_AUoAQ&biw=1200&bih=1499#q=running+target&tbm=isch&facrc=_&imgdii=_&imgrc=zXy8nFBJLaYNDM%3A%3B5ccjyybzbH-NgM%3Bhttp%253A%252F%252Fwww.dsr.wa.gov.au%252Fassets%252Fimages%252FDiagrams%252FRunning-target-range.gif%3Bhttp%253A%252F%252Fwww.dsr.wa.gov.au%252Fshootingdimensions%3B738%3B651
And wiki article here:http://en.wikipedia.org/wiki/10_metre_running_target
What she asked was that:
1: the target must have two different speeds (giving 2,5 and 5 seconds of target time)
2: there must be a random delay (2-5 seconds) between the time you press the "go-button" and the target starts moving
3: there must be a button for stopping the target in the middle of the track (for adjusting the scope)
4: she would like to have a camera (webcam??) at each end that shows the target for five seconds after each shot
The system today is set up with obsolete electronics, brushed dc gearmotor and several microswitches...
I would like to use a stepper, no gearing, and one microswitch for zero position on the track, and one control box (on a 10metre cable) with start, stop and speed selector button.
As for point 4; either switch the cameras on and off after 5 sec, or keep camera on the entire time but only illuminate the target for 5 sec or maybe a mechanical flap/shutter in front of the camera, possibly driven by a rc servo??
Anyway, as I started of with; I am really out of my league here when it comes to the programming, but fully capable of fixing the mechanical stuff.
Is there anyone here that could be interested in exhanging a little work? I am more than happy to do mechanical designing and prototyping in return, maybe some of you need printed parts?