construction Laser level for digger

Projects General Guidance
21

christerLun:
Now I have tested a little more and I can say that the ir sensor don't see red. And the 38kHz signal must then be pulsed again, at max 60 pulses at the time.
Working on several solutions for now.

I have a ir-laser that I am working on and it seems to work with arduino indoor at least. But it is hard to work when you cant see the beam at all so if I can find something that can see red laser it would be better.

If you only need the red laser to see where the device is pointing, could you just attach a red pointer laser to the side, in line with the IR laser? The red laser beam would be ~1-2cm to the left or right of the IR beam, but at the same elevation. At least then you know where the laser is pointing?

22

Most IR detectors have a visible light filter that you might want to remove for better sensitivity to the red laser. You might study the below kit for ideas. I know I can light up a reflective interstate highway sign with a standard pointer laser at over half a mile away.

http://www.ramseyelectronics.com/cgi-bin/commerce.exe?preadd=action&key=LTS1