Recent content by ajb

A method of guiding a moving object that consists of a "knife" attached to the moving object (ie, a wagon) that slides in a slot in a stationary object (ie, a deck). The knife is typically made of steel, aluminum, or UHMW, 1/4&qu...

Here's a fun one. I have a designer who wants to use a textured vinyl flooring (not dance floor--the kind of thing you'd put in a kitchen or somesuch) painted metallic silver as a show floor. I've tested various combinations of scrubbing the vinyl with acetone or denatured alcohol to try to...

We're looking to replace a bunch of bare 100W A21 silver bowl lamps in our lobby and office with something a bit brighter and longer-lived, but I'm having a hard time meeting all of the requirements. enclosed tube (similar to this). A or G shape dimmable (we don't need much low...

That's pretty much done for you in the Enttech source material. You can incorporate their libraries into your software, and then concentrate on the meat of the control software--creating, storing, recalling, and playing back the channel values. Once your software creates a list of 512...

It's possible to do what you want with nothing but lift lines and have it come in and turn into position in one operation, and likewise turn back and fly out in one operation. It involves setting up bridles to hang the unit in its desired (angled) playing position from deadhung points, with...

I've taken two sockets and wedged them into the ends of an appropriate length of PVC in the past. One drive-end in to attach to a socket drive adapter in a drill, the other drive-end out to interface with the nut. Downside is you're limited to a certain number of combinations of pie size and...

Ah great! My impression was that you were just going to put one at the console, but I'm glad to hear you laready have the right idea.

If you want to use all of those connectors you're going to need more than just an optosplitter at the console. You're going to need a repeater at each and every plug.DMX is meant to be a linear multidrop network, meaning that it should be cabled from one device to the next to the next with no...

Do you need an opto-splitter (ie, are you trying to provide equipment protection against electrical faults on the data lines, or solve a ground loop issue), or do you just need a booster? As far as DIY. . . If it's the latter, a pair of RS485 transceivers (two MAX485 equiv, or one...

Sure, this category includes lots of institutions, but there are probably ten or a hundred times that number of institutions for which non-dim fluorescent, HID, or specialty LED fixtures are a great solution (stores, offices, factories, etc.) in terms of performance characteristics and...

Re: Getting 200-240VAC with 120VAC Pigtails. huh? If the OP's nominally 120V circuits are actually running at 208V, then there's something seriously wrong. . . and they'd probably have noticed issues already. If you're suggesting that the OP's building infrastructure is wired with...

Dude. . . that was answered in this very thread. The answer was on the page where you typed this post. Hint: it was very close to the top of the thread.Could be. If they aren't labeled you could unplug them and see what happens.Depends on how the blue thing is configured--some ports on...

Re: Getting 200-240VAC with 120VAC Pigtails. Any 208V fixture connected to a 120/208 Y system is "split" across phases. . .phase-to-phase is the only way to get 208V in such a system.To the OP: What you describe would, in fact, do what you're after, but doing it safely is a bit more...

An ethernet cable is an ethernet cable*, it will work in your ethernet lighting network just as well as in your ethernet home computing network.Did you mean to ask if you could use the kind of DMX cable that's used for installations for your computers?If so, more like the other way round...

You use an ethernet switch, which is the bluish device in your second picture with all of the cat5 cables plugged into it. The black panel below it that all of those cables go to is a patch panel, where the fixed building wiring meets the flexible device wiring. An ethernet hub is to ethernet...