I tried this technique with the camera and laser in my tank. It worked
pretty well in low light and short ranges. In full daylight, though, the
laser point was not identifiable in the camera frame. I was using a 5mW
laser. Maybe a more powerful one would work but I'm not sure how popular
that would be with the other battlers.
- Doug
-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of Modena
Sent: Wednesday, May 20, 2009 8:40 PM
To: R/C Tank Combat
Subject: [TANKS] Re: target tracking
here is how to make a laser rangefinder
http://www.pages.drexel.edu/~twd25/webcam_laser_ranger.html
On May 21, 10:27 am, "Doug Conn" <[email protected]> wrote:
> I always thought one of those Stanley FatMax laser measuring tapes would
be
> a good candidate to hack up. They use a laser instead of the ultrasonic
> pulse that most electronic measures use, and they are only $100. I think
it
> would be hard to poke around and find a signal or bus that a processor
could
> interpret, though. My guess is that the whole thing is integrated onto a
> single chip and may not even expose an output other than the LED driver. I
> guess you could interface to that, but what a pain.
>
> - Doug
>
>
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]]
>
> On Behalf Of HV
> Sent: Wednesday, May 20, 2009 6:53 PM
> To: R/C Tank Combat
> Subject: [TANKS] Re: target tracking
>
> A personal radar would be nice for camping trips in grizzly
> territory :)
>
> I think over the years there were a lot of mini radars developed for
> the automotive applications - automatic braking and related. I think
> one new model car has this feature, but most of these efforts never
> got beyond the prototype stage. This kind of radar is typically a
> millimeter wave, frequency modulated, continuous wave radar, such as
> can be found at:
>
> http://www.ducommun.com/ww_subsystems.html
>
> Don't know what they cost, but they look military-ish, and expensive.
>
> I think it wouldn't be too difficult to modify a Doppler radar, such
> as a cheap baseball speed gun, with a sawtooth frequency modulation to
> measure range.
>
> However, if I were going to do radar, I would rather use a laser
> rangefinder, like the Bushnell sports rangefinders. The standard ones
> are cheap, but they don't have a computer interface. You could either
> hack the innards or buy a more expensive version that has an RS232
> interface. These have plenty of range.
>
> Here is a link for some other sensors for robotics, including scanning
> laser rangefinders and 3D flash laser cameras. Very expensive.
>
> http://www.acroname.com/robotics/parts/c_Sensors.html- Hide quoted text -
>
> - Show quoted text -
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