Thumbwheel with click!

I am trying to find a component that does the following:

(1) Operates as a thumbwheel, i.e. to be mounted so that the edge of the wheel protrudes from a casing through a slot. (2) Has mechanical detents, i.e. it doesn't smoothly roll, but clicks as it is rotated. (3) Each click will close a pair of contacts, however there are two pairs of contacts. One pair will operate in one rotation direction, conversely the other pair in the other direction. (4) Pressing the wheel will momentarily operate a thrid pair of contacts.

I have tried to find something suitable for doing the above. I thought I would ask here if anyone has come across something that could do all that.

If there are options that are splash and dust proof, then that would be even better!

Cheers

Reply to
Stephen
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I don't have a part number. But this sounds similar to a mouse scroll wheel. Except for the detents, that is.

One important point: I don't think you'll have much luck finding a wheel that closes one set of contacts in one direction and a different set in the other. Most implementations produce two open/close signals that are in quadrature (at a 90 degree phase difference between cycles*). Then, some simple logic in the device monitoring those contacts can determine the direction of rotation.

  • There may be more than one cycle per wheel rotation.
Reply to
Paul Hovnanian P.E.

Stretch my old ring out.

I Am Kirk Johnson. "Anal Stretching, Wrenching & Expanding Specialist"

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Reply to
Kirk Johnson

:I am trying to find a component that does the following: : :(1) Operates as a thumbwheel, i.e. to be mounted so that the edge of :the wheel protrudes from a casing through a slot. :(2) Has mechanical detents, i.e. it doesn't smoothly roll, but clicks :as it is rotated. :(3) Each click will close a pair of contacts, however there are two :pairs of contacts. One pair will operate in one rotation direction, :conversely the other pair in the other direction. :(4) Pressing the wheel will momentarily operate a thrid pair of :contacts. : : :I have tried to find something suitable for doing the above. I thought :I would ask here if anyone has come across something that could do all :that. : :If there are options that are splash and dust proof, then that would :be even better! : :Cheers

Commonly known as thumbwheel or pushwheel rotary switches.

eg.

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You can also get them in push button versions.

Reply to
Ross Herbert

Nope, not what I was after.

Reply to
srmoll

You could well be right, I'll have to investigate further.

If you're interested I have an old Garmin i3 GPS which is all bashed up, left button is missing, battery cover broken, USB connection unreliable. I was toying with the idea of reboxing it in a water proof (ish) plastic box, so I can use it on my motor-scooter. I would like to have a better thumb wheel control for it though. Something at least a bit weather proof, and more easily operated whilst wearing gloves.

Reply to
srmoll

The newer ones don't use switches. Photo or proximity sensors sense a hole or mark on the wheel.

Reply to
<aecontrols

What did "the older ones" use?

Reply to
Abbey Somebody

small micro switches

Reply to
<aecontrols

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