--- Stefan Trethan <stefan_trethan@...> wrote:
in volume production as its super cost effective, but
we would take care of the mechanical issues in the
molds.
pretty soft, but at least it doesn't corrode.
copper, and had them formed off site, even for
proto's. I don't think I would want to mess with it at
home. Its nasty stuff.
tired), then again we wanted 20,000 cycles.
a cam and spring arrangement. It would make the
electrical wear and tear a lot less of a headache.
One could also use optocouplers and a mylar disk...
bit it gets spendy.
I've also seen a magnet, with a sphereical ball
actuator that handled the contact switching as it
rolled along.
effective, but it is the most intuitive, at least for
those of us in the older generation. The youngsters
may have grown up with bottom remotes etc, but I still
have a few tv sets with rotary volume and channel
select. EVen Fluke tried to go away from the rotary
switch in the late 80's.... the product failed. They
tried again with a lower priced model in the late
nineties. I don't think its doing to well sales wise.
be a challenge, then agan the end result would be
pretty cool.
Ron
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> Hi,Yes, but not at home with limited tools.... Its great
>
>
> has one of you ever tried making a multi-position
> switch directly on the
> PCB like most handheld meters have?
in volume production as its super cost effective, but
we would take care of the mechanical issues in the
molds.
> I can't gold plate it (yet).Its a function of life span and environment. Gold is
> I think tinning would do for now.
pretty soft, but at least it doesn't corrode.
>I think it would be trouble. We always used berylium
> I think of using a M6 screw as axis, just a washer
> on each side to make a
> bearing
> of a hole in the PCB. Then take a piece of FR4 and
> make the "wiper" with
> contacts
> of thin sheetmetal.
copper, and had them formed off site, even for
proto's. I don't think I would want to mess with it at
home. Its nasty stuff.
> The M6 screw would fit into a knob on the frontFR4 can be pretty abrasive to use as a detent. (we
> panel.
> The "snap" action could be achieved by drilling
> holes in the PCB and
> letting
> some spring catch them.
tired), then again we wanted 20,000 cycles.
>Could you use a 360 degree pot, and then detents with
> What do you think of that? stupid idea?
a cam and spring arrangement. It would make the
electrical wear and tear a lot less of a headache.
One could also use optocouplers and a mylar disk...
bit it gets spendy.
I've also seen a magnet, with a sphereical ball
actuator that handled the contact switching as it
rolled along.
>And other place, a rotary switch is generally not cost
> It seems i can't get rotrary switches with enough
> positions.
> Would be nice to be able to just make them how i
> want.
> After all it works in meters...
effective, but it is the most intuitive, at least for
those of us in the older generation. The youngsters
may have grown up with bottom remotes etc, but I still
have a few tv sets with rotary volume and channel
select. EVen Fluke tried to go away from the rotary
switch in the late 80's.... the product failed. They
tried again with a lower priced model in the late
nineties. I don't think its doing to well sales wise.
>DIY without extansive cad and proto facilities would
> tell me what you thik about that.
be a challenge, then agan the end result would be
pretty cool.
Ron
>http://us.click.yahoo.com/J8kdrA/y20IAA/yQLSAA/bGYolB/TM
> ST
>
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