U`King LED 25W DMX Moving Head Color Spotlight

Robert F Jarvis

Active Member
Joined
Apr 8, 2017
Location
Sebring, FL, USA
We have two of these inexpensive MHs. They work very well, are bright and responsive BUT! When turned on or reset they point in different directions and from there all command are accompanied by this "Home" difference. We are looking for anyone who has experience with these and who may have seen and hopefully repaired the same (Home position) problem.
 

JD

Well-Known Member
Joined
Jan 1, 2005
Location
North Wales PA
I can give you a generic answer:
The home position for pan and tilt usually involve either a little magnet glued to a plate that aligns with a hall sensor, or a small hole through a plate and a photo-sensor.
In the case of the magnet, it may be they glued it in the wrong place on one of the units.
In the case of both, if the plate is then connected to a cog belt that moves the unit, the belt may have jumped a few teeth or been put in wrong. This would be an easy fix as long as you are comfortable disassembling the unit which will void the warranty. The usual disclaimer applies here.
I doubt there is an offset program feature on a unit this inexpensive, but it is not impossible. If, for example, the pan was off by 180 degrees, it may indicate the unit is programed to invert. (Manual would say something about that.)
 
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JChenault

Well-Known Member
Joined
Jan 5, 2009
Location
seattle, wa USA
If each unit consistently homes to the same location. Do you really care?

Given a well designed console, you should be able to define a “console home” position that does what you want
 

Malabaristo

Well-Known Member
Joined
Jul 11, 2008
Location
Wisconsin
(Manual would say something about that.)
I appreciate your optimism :)

But yeah, the big question is whether an individual fixture always homes to the same spot, or whether it does something different each time. If the latter, then you'll have to do some disassembly to figure out what type of homing sensor (if any) is used as JD suggested. I'll add that sometimes it's a mechanical switch that gets bumped by a little tab as well...

If a given fixture always does the same thing, but no two fixtures match, then you could still look into adjusting the homing sensors to all match, but it's probably easier to solve that problem in programming/patch.

Related question: have they always done this, or did they work correctly at some point in the past?
 

Robert F Jarvis

Active Member
Joined
Apr 8, 2017
Location
Sebring, FL, USA
Some good answers here, thankyou all;
Each unit has always pointed to the same "home" spot (though they differ where home is!)
So - the creation of a "Home" location is something I need to look into on our new Element 2. I'll Post over there if I need help with this.
However, I do want to disassemble them and check the magnets, opto position sensors and/or belts etc. These are relatively inexpensive and as I'm going to be working a lot more with MHss this is a chance to get to know them better.