# Yet another LED Fixture

#### derekleffew

##### Resident Curmudgeon
Senior Team
So the tour I'm working right now has about 80 of these, Ayrton 150 moduLED, built into the set under clear Lexan as footlights. They're great. One of the neatest features, is there are no buttons. Below each of the standard labels: Menu, enter, up, down; are photocells on the front of the fixture, for setting mode and address.

I'm sure these are expensive units, but seem very well made and with very good output.

#### avkid

##### Not a New User
Fight Leukemia
Below each of the standard labels: Menu, enter, up, down; are photocells on the front of the fixture, for setting mode and address.
I'm sort of fuzzy on photo cells, how does this work?

#### BillESC

##### Well-Known Member
I've always wanted a fixture that could create "snumbers of rich and saturated colour-hues."

Senior Team

#### Charc

##### Well-Known Member
Greenia, why on earth would they put the "dawn/dusk" sensor on an a lighting instrument? What happens if I cast a shadow on it? What happens if the house is in blackout?

"Garage sensors": IR, I guess, sure. I've never really looked into the matter.

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#### gafftapegreenia

##### CBMod
CB Mods
Greenia, why on earth would they put the "dawn/dusk" sensor on an a lighting instrument? What happens if I cast a shadow on it? What happens if the house is in blackout?

IF it's a photocell, it's likely they designed some sort of circuitry using a specific photocell in order to make their switch. But hey, I might be wrong, this is just my educated guess. It could be IR, but derek said it was a photocell, so, that's what I was going off of.

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#### cutlunch

##### Active Member
Greenia, why on earth would they put the "dawn/dusk" sensor on an a lighting instrument? What happens if I cast a shadow on it? What happens if the house is in blackout?
"Garage sensors": IR, I guess, sure. I've never really looked into the matter.

I'm scared!, very scared!!! Charcoal asked exactly the same questions I was thinking ,about the photocell switch. Is this mental osmosis and if so which way is it going?

Just joking Charcoal, those are good questions and I hope someone is going to tell us the answer. I think using a photocell switch is overkill maybe that's why they cost so much.

The old capacitive switch lasts for a long time and you don't normally change the settings on these fixtures every day.

#### derekleffew

##### Resident Curmudgeon
Senior Team
...Just joking Charcoal, those are good questions and I hope someone is going to tell us the answer. I think using a photocell switch is overkill maybe that's why they cost so much...
Looking at one of 25 spares, not powered, I think it's an infrared heat sensor. The ones in use are on the deck under Lexan so I can't get at those, nor would they take kindly to me changing a DMX address on them. Hopefully the User's Manual will be available on the website soon. Sorry I started such a ruckus, I just thought it was an intriguing idea. I doubt the sensor adds any additional cost over a push button, and may in fact be less expensive to produce. I like the fact that one can address these units with flipping them over, then standing on your head upside down.

#### gafftaper

##### Senior Team
Senior Team
Fight Leukemia
In my experience photocells are typically a simple on/off switch that detect light or dark. Cover it... dark... move your hand... light.
In a binary world of 1's and 0's it makes very logical sense how this works without any garage doors opening and closing.

#### DarSax

##### Active Member
Just throwing this out there, because I finally found out today how a computer's touch pad differentiates between fingers and other stuff, might have to do with the electrical resistance of skin. Just a thought