I work on radio telescopes. They typically have a large diameter roller bearing to support the yoke. The azimuth drive is completely independent of this bearing. Some use a friction roller, others a ring gear with two motors with pinions, one has a direct drive motor built into the housing (not recommended).

If it is CO2 then get a house plant. If it is CO then get the hell out.

It's a CO detector, not CO2. Get the fuck out of the building ASAP!

Frantically calls boss in the am “hey I can’t come in, I’m fucking dead”

LEDs are difficult to dim and so you need special dinners and even those can’t dim too many watts of leds without having problems. LEDs cause noise and flicker a lot.

To keep it simple get a dimmer that’s led compatible and ensure the fixtures you’re using are explicitly listed as compatible. Otherwise you’re going to have a crapshoot.

Or do like I do and don’t use dimmers. They’re dumb.

the dish is actually a model, thus the weight is not that important. However, I wanted to design it realistically to what would be done.

Thus, I should put teeth on the inside ring, and drive it using teeth on my stepper motor. To increase the "torque" on my stepper, I believe I can also use teeth ratio

The calculation is correct, but some led lights dim using pulse width modulation instead of the voltage regulation used in incandescent bulbs of the past.

Pulse width modulation works by taking an led that's "flashing" 60,000 a second and makes it half as bright by flashing on and off 60,000 a second resulting in it being on for 30,000 pulses and giving off half the light.

You need to know if the led lights are "dimmable" i.e. they have the dimmer in the bulb or if the led light is relying on the dimmer switch to provide the modulation for the bulbs.

Correct, they should have ratings, usually hundreds lbs to 30,000 lbs.

If there are teeth on outside, you can drive it with a belt or teeth. But the stationary side didn't have teeth.

You haven't indicated any idea what kind of weight you need to rotate.

Username on point

That is not worth noting because that's not true.

Older dimmers are NOT variable resistors! That's simply not true.

Except that he's right, and you are wrong. And your childish insults doesn't help your case at all.

Sorry, but it's you that is wrong. No one uses rheostat dimmers, they would radiate a ridiculous amount of heat - basically the entire heat load of a lamp, inside a tiny box.

/u/Riegel_Haribo is correct.

Maybe you are confused because they look like rheostats, but they are not.

TRIAC based dimmers do that. But newer (and better) MOSFET types cut out the high parts of the waveform instead.

They work better for LED's - more compatibility, and the ability to dim to lower levels.

OP must be dead, no replies.

thanks!

I'm a little confused about which side i would attach the dish too.

Here is a picture.

Does the dish attach to the inside, and if such, wouldnt all of the weight be on the bearings (as there is nothing to support it underneath).

I hate when that happens

“Florida man found dead next to alarming CO sensor and phone rapidly strobing Reddit notifications.”

No this is bad advice. If it stops when OP ventilated the house, then it obviously hasn't failed on has it...

Call emergency services. When this happened to me the fire department told me not to open doors and windows just to leave. They brought what they called a “sniffer” and located the source in like 30 seconds. My furnace backdrafted when the furnace was on but the outside temp got warm quickly and it was incredibly windy.

If you need to vent the windows, a block of wood wedge in the top will prevent them from being opened further, not foolproof but. And yes, get out!

Is this a joke post or are you really that stupid... It's not a CO2 alarm, it's a CO alarm - I.e carbon MONOXIDE! It is poisonous!!

1. Turn off your gas supply at the mains
2. Leave the house and call the emergency services.

You want a turret / slewring bearing, and many have teeth on one ring, which is better way to drive with it.

Or turntable bearing, but probably not a good idea if you consider wind loads.

You'll have to list diameters and weight for any useful recommendations

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Look up “thrust bearing”

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