sleepytom Posted April 21, 2009 Share Posted April 21, 2009 I need to get hold of a DMX (or rs232 or whatever really) mirror ball rotator motor. Ideally I'd like it to have a calibrated DMX control of speed with the ability to turn very slowly (as slow as 1RPM or even less would be good) The rotation speed needs to be quite accurately controlled and / or have a DMX output which gives the current position in degrees of rotation. Oh and it needs to be able to take the weight of a large-ish thing hanging off the bottom of it (maybe 50KG) does anyone know of anything that vaguely fits the bill? I'm in the early stages of this idea so I'm keen to hear of any DMX controlled rotators even if they don't meet my exact spec. I'm aware that there are companies which do moving trusses and the like but they are a bit overkill for this idea. Link to comment Share on other sites More sharing options...
menghini222 Posted April 21, 2009 Share Posted April 21, 2009 Hiya, I found two products that you may be interested in, The first one alot more cheaper then the second... http://www.highlite.nl/index.php/highlite/...r_dmx_2_channel http://www.highlite.nl/index.php/highlite/...ll_motor_500_kg Hope that helps, Menghini222 ;) Link to comment Share on other sites More sharing options...
Brian Posted April 21, 2009 Share Posted April 21, 2009 HSL will make you a custom unit, I had a quote from them last year for an art installation project. Be sitting down when you get it though. I did also find via a serious google session far-eastern made units but safety specs proved a bit elusive. [EDIT] I think I also found one in the Showtec catalogue but as I can't find it at the moment.... Link to comment Share on other sites More sharing options...
menghini222 Posted April 21, 2009 Share Posted April 21, 2009 I think I also found one in the Showtec catalogue but as I can't find it at the moment.... The Links I sent him were from the showtec catalog ... they only hold 10kg though I noticed you were looking for a 50kg, there is one on there but it is not DMX. Menghini222 Link to comment Share on other sites More sharing options...
Brian Posted April 21, 2009 Share Posted April 21, 2009 ...you were looking for a 50kg,...Yeah, I was needing to support 1m diameter bits of dichroic glass! Link to comment Share on other sites More sharing options...
sleepytom Posted April 21, 2009 Author Share Posted April 21, 2009 thanks I had seen the showtec one, it might do for the proof of concept. although I fear that it will be very crude with DMX simply setting the speed of rotation. I would much rather have a system where DMX was tied directly to the motor position. Link to comment Share on other sites More sharing options...
Leggy Posted April 21, 2009 Share Posted April 21, 2009 How about one of these. http://www.robe.cz/default.aspx?contentid=...b2-3e356457ee73 Variable speed, bi-directional, DMX, holds up to 50kg. HSL bought seven for me a couple of years ago, I assume they still have them in stock. Leggy. Link to comment Share on other sites More sharing options...
sleepytom Posted April 21, 2009 Author Share Posted April 21, 2009 yeah that looks like just the ticket, although probably a little bit on the expensive side I guess. I don't suppose you know of anywhere with them for hire? Link to comment Share on other sites More sharing options...
Leggy Posted April 21, 2009 Share Posted April 21, 2009 I don't suppose you know of anywhere with them for hire? Yup. HSL. See above. Leggy. Link to comment Share on other sites More sharing options...
Brian Posted April 21, 2009 Share Posted April 21, 2009 ...although probably a little bit on the expensive side I guess. ...This time last year I was quoted around the £1k each mark on the basis of buying 8 of them (same project). Link to comment Share on other sites More sharing options...
sleepytom Posted April 21, 2009 Author Share Posted April 21, 2009 yeah that's about the price I've seen for them on a couple of sites. did you buy them then? are they any good? any links to the project you did with them? Link to comment Share on other sites More sharing options...
p.k.roberts Posted April 21, 2009 Share Posted April 21, 2009 No personal experience , but Light Engineering advertise a DMX controllable rotator rated at 100kg SWL. http://www.light-engineering.com/mirrorware.pdf Link to comment Share on other sites More sharing options...
Jivemaster Posted April 21, 2009 Share Posted April 21, 2009 Control by "mirror ball rotator" is going to be peculiar as they are usually very underpowered and need a short chain to take up the motor start up torque, attempts to stop a mirror ball in a particular place usually fail unless ther is positive direct drive with brakes. Link to comment Share on other sites More sharing options...
sleepytom Posted April 21, 2009 Author Share Posted April 21, 2009 yeah I had thought that mirror ball technology was probably not 100% ideal (even a vidiot like myself can see that mirror balls are not exactly precision engineered devices!) the robe banner rotator looks like it would be perfect if only it cost a bit less, don't suppose anyone knows of any cheaper alternatives to the robe? or... has anyone got any broken macs which still spin round? that could be the most affordable option for the proof of concept stage Link to comment Share on other sites More sharing options...
henny Posted April 21, 2009 Share Posted April 21, 2009 take a look at milford's site, http://www.ppmilinst.redcetera.com/ under DMX controlers, they have controlers to drive dc,stepper and servo motors from DMX Link to comment Share on other sites More sharing options...
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