Rotary with a button

[Atomic_Sheep]

Hi,

I'm looking for a rotary with a button in the middle. From what I can gather, the rotary bit doesn't move when you press the central button. All the rotaries that I can find, the whole rotary bit gets pressed in when you push on it. Has anyone seen rotaries with a central button?

[Trevor Hale]

Hi,

I'm looking for a rotary with a button in the middle. From what I can gather, the rotary bit doesn't move when you press the central button. All the rotaries that I can find, the whole rotary bit gets pressed in when you push on it. Has anyone seen rotaries with a central button?

Not sure exactly what your looking for. But I have several rotaries that have separate contacts for a "pushbutton" when you press it. For example the baro knob on the efis panel. Rotating changes the altimeter setting and pushing activates the STD function.


That what your looking for?

[Atomic_Sheep]

Hi Trevor

I'm looking for a rotary encoder like the one seen at 1:19 in this video:

https://www.youtube.com/watch?v=ZT6jaSbKGJ4

Only I'm looking for a rotary encoder not a x position switch. The main feature there is the TFC button isn't attached to the rotary bit, so when you press it, just the button is pressed, the grey bit doesn't move.

All the rotaries I've dug through come with push button functionality but the whole thing moves when you press it.

like in this video at 1:00 https://www.youtube.com/watch?v=tsXUENxwR8w

[Trevor Hale]

Ok so you want just the centre of the rotary to push, not the entire rotary to push in. So basically your looking for a rotary with an actual tactile switch on the end of it.

[iwik]

Im not convinced its a tactile switch. If you look hard enough i can see the shaft move. Anyway an Elma dual rotary with push switch
should achieve the result. Just mark the cap of inner shaft what the
switch does.
Les

[Joe Lavery]

Leo Bodnar sells the Elma E37 Dual Rotary with the switch, which I guess is what you're looking for.
It's not cheap at £19.99 but it's about the right price for this unit. There are a few cheap alternatives but they are usually lower count detents. So not as accurate, they tend to jump numbers or need more than one detent per digit.

http://www.leobodnar.com/shop/index.php?main_page=product_info&cPath=98_75&products_id=196

Incidentally it is a momentary switch mounted within the encoder, it's actuated by pushing the top of the shaft down as shown in the video.

Joe.

[Atomic_Sheep]

Thanks guys, I couldn't find anything apart from elma myself. I asked a similar question before, but I think at that time I was wondering about dual rotary encoders. Elma was the response back then as well.

[Marco ERJ]

I am using some rotaries from OEM Honeywell parts and they have the push switch you describe. They have 2 or 3 shafts (depending on whether they are single or dual concentric), with the centermost shaft actuating a push switch mounted to the bottom of the rotary body. In these, the actual encoder shafft(s) do not move - only the top cap which you actually push. I got mine from OEM parts like I said, and didn't find them easily to buy as spares (although I didn't look too much), and have no idea on cost (I assume pretty expensive and pray everyday that mine don't break!).
They are branded OakGrigsby, which has been acquired by ElectroSwitch (http://www.electro-nc.com/encoderflyermm.pdf). I will say they are much larger than the miniature style we commonly use (ALPS or ELMA), and have a very distinct feel (heavy, very tactile). But capability-wise they are no different than ELMA or ALPS. The space required can be a great deterrent depending on where you want to use them.
I hope this helps!
Marco