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I don't have an instructable on it sorry. So the range refers to the range of motion on the servos - unrestricted being 0 - 180 degrees (maybe your servos have more range). To test just make a simple sketch that puts your servos at 0,0 and align with one edge of your floor unless you want it to come up on your wall a bit. Then increase the servo position (first one servo at a time, then both) incrementally until you get to the other extreme of your space. I got to those numbers in the sketch through trial and error, but they are strange numbers because I am avoiding a staircase so my cats don't chase the laser off a cliff so to speak. Hope this helps -
Build a 'blackbox' datalogger for adding on screen display gauges to your videos
https://github.com/fluxaxiom/Arduino_AutoCatLaserAwesome! I had built one of these a year ago, and my cats loved it. It is an excellent way to distract them when I'm trying to do work and they wont leave me alone. After they got a little bored with it I decided to expand the functions and add more variation. Check out my code on github if you're interested - there are functions to make the laser zig-zag, do circles, scan the room, boomerang, bounce, creep slowly etc. The code would have to be adapted to the RoboTurret but I'm sure some may be interested in taking things a little further. I also adapted a power regulator into a light bulb base so it can be screwed in my ceiling fixture (I wouldn't recommend this if you don't know what you're doing). So much better than the disappointing commercially available product which I won't name but you can find easily on google. Thanks for sharing!
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