Rotary encoder question

[HondaCop]

If a certain situation calls for an 8 position, 1 circuit rotary encoder. Can I use a 16 position, 1 circuit rotary encoder instead? The reason why I ask is because the 8 position one is hard to find. The only place where I actually see it listed at is on Opencocpits, but Leobodnar has the 12 position encoder for almost 1/2 price of what Opencockpits charges for the 8 position version of it.

[HondaCop]

Anyone? :)

[ian@737ng.co.uk]

hi hc....
not sure what you mean by this. are you referring to cycles per revolution or are you looking for a switch with 8 positive positions per rev?
i'm assuming that you saw the CTS288 encoder....right?
pls expand on what you want to do and i'll point you in the right direction.
cheers ... ian

[HondaCop]

Hi Ian,

Sorry for my ignorance! lol Let me explain myself a bit better. Here is a panel which I have ordered from Hispapanels: http://hispapanels.com/tienda/product_info.php?cPath=56_22_23_24&products_id=64

As you can see on the requirements, it says I will need 3 rotary switches (8 positions, 1 circuit).

Opencockpits have these switches in stock: http://www.opencockpits.com/catalog/positions-rotary-switch-p-155.html?cPath=24_55

Leobodnar has the CTS288 at 2.89 EUR., but it says that it has 16 detents per revolution. I am comfused here.

Can I use the CTS288 for the panel above?

[npbosch]

I think you will need a 12 position (not an rotary encoder).
These can be bought at every electronic shop and will cost 1 to 3 euro.
Take a good look at what type you buy.
You have 12x1, 6x2, 4x3 types.
You will need the 12x1 type. This type has one ground pin and 12 positions.
The 4x3 type has 3 ground pins and has only 4 usable positions.
These kind of position switches are also available with 8 positions, but these are rare to find.
When your panel has markings at every 45 degrees you will need the 8 position type. At most panels the markings are at every 30 degree.

The leo bodnar type are rotary encoders. From an electronically viewpoint you should see a rotary switch as 12 individually on-of switches
A rotary encoder is far more complex. There are a lot of difderent types.
Most give 01010101 when you turn clockwise and 101010101 when you turn counterclockwise.
You need special input ouputcontrollers and take care that you buy the type that fits to that input outcontroller.

[HondaCop]

I think you will need a 12 position (not an rotary encoder).
These can be bought at every electronic shop and will cost 1 to 3 euro.
Take a good look at what type you buy.
You have 12x1, 6x2, 4x3 types.
You will need the 12x1 type. This type has one ground pin and 12 positions.
The 4x3 type has 3 ground pins and has only 4 usable positions.
These kind of position switches are also available with 8 positions, but these are rare to find.
When your panel has markings at every 45 degrees you will need the 8 position type. At most panels the markings are at every 30 degree.

The leo bodnar type are rotary encoders. From an electronically viewpoint you should see a rotary switch as 12 individually on-of switches
A rotary encoder is far more complex. There are a lot of difderent types.
Most give 01010101 when you turn clockwise and 101010101 when you turn counterclockwise.
You need special input ouputcontrollers and take care that you buy the type that fits to that input outcontroller.

Thanks Norbert! Your post made a ton of sense. Now I have a better idea.