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MEW article on coupling a stepper motor to a Vertex Rotary Table

Problems in sourcing SPDT Mom (On) OFF (On) Rocker Switches

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Greensands05/08/2021 09:34:06
449 forum posts
72 photos

I am currently having problems in sourcing a couple of Mom (On) Off (On) rocker switches required for the Arduino stepper motor project. Only available items appear to be located in the US. Is anyone aware of a possible UK source?

Stuart Smith 505/08/2021 09:41:10
349 forum posts
61 photos

Are any of these suitable:

**LINK**

from CPC.

Stuart

Emgee05/08/2021 09:44:27
2610 forum posts
312 photos

Is that the same as SPDT with centre OFF ?

DPDT available on eBay in various forms from several UK sources.

Emgee

Greensands05/08/2021 09:45:07
449 forum posts
72 photos

Yes, that looks just the ticket. Many thanks for the link

Greensands05/08/2021 10:06:21
449 forum posts
72 photos

Have just checked out CPC for the SPDT switch Type 1818.1302 manufactured by Marquardt but they are only taking back orders. There seems to be a world wide shortage for this and many other items due to Covid issues.

Oven Man05/08/2021 11:57:00
avatar
204 forum posts
37 photos

Would something like this be suitable? It's a toggle switch rather than a rocker, probably more robust.

Momentary Toggle Switch

Peter

duncan webster05/08/2021 16:09:50
5307 forum posts
83 photos

You could always use 2 push buttons instead

If those from Oven Mans link will do I have a couple you're welcome to, but they might be too big

Greensands05/08/2021 17:00:50
449 forum posts
72 photos

Oven Man/Duncan - I think the physical size and current handling capacity of the units suggested are a bit OTT for the given application. I checked the Dims and was surprised to see just how big and 'meaty' in both senses they actually are.

In their place I have opted for the miniature version having the same Mom On-Off-On action, smaller current rating and fitting ia 6mm panel hole. Costs in each case are very reasonable.

Many thanks for all the help provided

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