Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week
Pretty good, relatively small and light operates just fine from 3V to 5V. Beam strong enough to be visible at least 10 feet away on white walls.
Beam rotates as you focus it. Be very careful to glue or otherwise immobilize the focus ring or your beam is not going to be level
Wit this, a decent spirit level and a lot of carefulness you can make your own laser line level for custom applications where a commercially available does not work well. A nice laser like this can also be used for robot navigation and obstacle avoidance if you are creative :-)
I am planning buy a few more for a 3D obstacle avoidance module for a robot. Stay tuned!
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