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R/C spotlight

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Hi All,

I am posting to get some advice on a small project I have, as I am no R/C specialist I was hoping someone on here could point me in the right direction.

I need to build a fixing for a small LED spotlight that allows the light beam to be moved remotely on 2 axis, the LED will be fitting within a small box which is fixed to a ceiling that is roughly 20m above the floor, I would like to calibrate the direction of the LED spotlight from the floor then lock it in place (once its been calibrated it needs to stay in that position), the movement will need to be quite sensitive as the light is fairly high up.

Does anyone have suggestions on which components to use, or if there is something already on the market that will do the job??

Thanks in advance

Dave

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Hi All,

I am posting to get some advice on a small project I have, as I am no R/C specialist I was hoping someone on here could point me in the right direction.

I need to build a fixing for a small LED spotlight that allows the light beam to be moved remotely on 2 axis, the LED will be fitting within a small box which is fixed to a ceiling that is roughly 20m above the floor, I would like to calibrate the direction of the LED spotlight from the floor then lock it in place (once its been calibrated it needs to stay in that position), the movement will need to be quite sensitive as the light is fairly high up.

Does anyone have suggestions on which components to use, or if there is something already on the market that will do the job??

Thanks in advance

Dave

Umm... 2 servo's and a good remote?

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Umm... 2 servo's and a good remote?

Ok, I guess what I really mean is, is there something I can buy off the shelf? Iv seen them for security lights, a bit too big & bulky though

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I think you may find that r/c servos aren't precise enough if you're looking to place a spot of light on something 20 meters away with repeatability and precision.

However, you want to try something off the shelf. You could pop your light source in the place of the camera in a typical pan & tilt assembly (e.g. Pandora - try Range Video or the simpler servocam from RC Tech): Plug the servos into an off-the-shelf R/C receiver and you're away. Positioning will be quick, but might not be precise enough for you.

If you need more precision, you could try using 'digital servos' (ask in any R/C shop) in either of the above assemblies, otherwise you'd be best off using stepper motors and controllers (e.g. from Active Robots), which would give you 100% repeatability and (with suitable gearing down) semi-infinite precision. Or you could hack a pre-built pan & tilt assembly as used for security cameras (search ebay for "pan tilt remote"), looking for one with a remote controller. You'd just have to unplug the camera & plug in your light source. More sluggish movements, of course.

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