need membrane sw w/encoder

[ml]

hi

was in a little over my head trying to find a group of about 4
positions or so on a strip or something

to control 4 small relays ultimately i need the switch to function
as on/off and need the membrane to be lighted on power 'on'

need a complete solution(keypad, encoder, connectors)


does anyone know where i can find perhaps a 'ready to go' setup
like this, dosn't have to be pretty,

i had no luck googling


thanks

 

[Rich Webb]

On Sun, 09 Nov 2008 06:48:18 -0500, ml <m@di.net> wrote:

hi

was in a little over my head trying to find a group of about 4
positions or so on a strip or something

to control 4 small relays ultimately i need the switch to function
as on/off and need the membrane to be lighted on power 'on'

need a complete solution(keypad, encoder, connectors)


does anyone know where i can find perhaps a 'ready to go' setup
like this, dosn't have to be pretty,

What you have envisioned is probably not a standard stock item. The most
straightforward approach would be four 1/4" SPST toggle switches. Each
controls one relay with, if required, one set of contacts for the load
and one for an indicator lamp.

Digikey carries a 4-position membrane switch
<http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=360-2294-ND>
but you'd need to add the glue electronics.

i had no luck googling

I did. I'm sure any of these companies would be happy to provide you
with exactly what you're looking for. Some NRE cost or minimum order
quantity may be expected.

http://www.technigraphics.com/
http://www.techno-mark.com/
http://www.ssielectronics.com/default.aspx?pageId=2

--
Rich Webb Norfolk, VA

 

[ml]

In article <d64eh4path1bnkktjuc3kcnvktd8qmbpfo@4ax.com>,
Rich Webb <bbew.ar@mapson.nozirev.ten> wrote:

On Sun, 09 Nov 2008 06:48:18 -0500, ml <m@di.net> wrote:

hi

was in a little over my head trying to find a group of about 4
positions or so on a strip or something

to control 4 small relays ultimately i need the switch to function
as on/off and need the membrane to be lighted on power 'on'

need a complete solution(keypad, encoder, connectors)


does anyone know where i can find perhaps a 'ready to go' setup
like this, dosn't have to be pretty,

What you have envisioned is probably not a standard stock item. The most
straightforward approach would be four 1/4" SPST toggle switches. Each
controls one relay with, if required, one set of contacts for the load
and one for an indicator lamp.

Digikey carries a 4-position membrane switch
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=360-2294-ND
but you'd need to add the glue electronics.

i had no luck googling

I did. I'm sure any of these companies would be happy to provide you
with exactly what you're looking for. Some NRE cost or minimum order
quantity may be expected.

http://www.technigraphics.com/
http://www.techno-mark.com/
http://www.ssielectronics.com/default.aspx?pageId=2

<<hi

thanks very much for the reply was hoping that more might respond.

I think either I didn't write it well, i wasn't looking for a 4pole
switch. or toggles, but i understand that is 'easy'

if i were to use toggle switches then i wouldn't need relays but i
specifically was looking for membrane switches 4 on a strip or so

to control 4 seperate things

I did check out the digikey switch and there competitors but
as you mentioned no electronics that is the hard part for me.

The places you googled, i should have mentioned yeah i can google a
million places that sell membrane switches, non that will sell qty 1
or 2 nor do the necessarily sell electronics again at small qty

i am just trying to home brew something but don't really have
experience with momentry membranes to relay latching electronics

perhaps someone might know of such a place that either has detailed
schematics or small sample /turn key prototype like samples
etc??



again thanks for responding

 

[Rich Webb]

On Tue, 11 Nov 2008 06:28:02 -0500, ml <m@di.net> wrote:

In article <d64eh4path1bnkktjuc3kcnvktd8qmbpfo@4ax.com>,
Rich Webb <bbew.ar@mapson.nozirev.ten> wrote:

On Sun, 09 Nov 2008 06:48:18 -0500, ml <m@di.net> wrote:

hi

was in a little over my head trying to find a group of about 4
positions or so on a strip or something

to control 4 small relays ultimately i need the switch to function
as on/off and need the membrane to be lighted on power 'on'

need a complete solution(keypad, encoder, connectors)


does anyone know where i can find perhaps a 'ready to go' setup
like this, dosn't have to be pretty,

What you have envisioned is probably not a standard stock item. The most
straightforward approach would be four 1/4" SPST toggle switches. Each
controls one relay with, if required, one set of contacts for the load
and one for an indicator lamp.

Digikey carries a 4-position membrane switch
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=360-2294-ND
but you'd need to add the glue electronics.

i had no luck googling

I did. I'm sure any of these companies would be happy to provide you
with exactly what you're looking for. Some NRE cost or minimum order
quantity may be expected.

http://www.technigraphics.com/
http://www.techno-mark.com/
http://www.ssielectronics.com/default.aspx?pageId=2

hi

thanks very much for the reply was hoping that more might respond.

I think either I didn't write it well, i wasn't looking for a 4pole
switch. or toggles, but i understand that is 'easy'

if i were to use toggle switches then i wouldn't need relays but i
specifically was looking for membrane switches 4 on a strip or so

to control 4 seperate things

I did check out the digikey switch and there competitors but
as you mentioned no electronics that is the hard part for me.

The places you googled, i should have mentioned yeah i can google a
million places that sell membrane switches, non that will sell qty 1
or 2 nor do the necessarily sell electronics again at small qty

i am just trying to home brew something but don't really have
experience with momentry membranes to relay latching electronics

perhaps someone might know of such a place that either has detailed
schematics or small sample /turn key prototype like samples
etc??

Well, if I were doing this I'd probably grab a small microcontroller
with an internal RC oscillator for the clock, unless driven to another
solution by other requirements. The uC gives me for "free" a power-on
reset for the relays, software debouncing of the inputs, and I/O for the
switches, relays, and indicators. If you don't have a drawer full of
assorted micros within reach then something like a Parallax Basic Stamp
or an Arduino may do the trick.

For a non-processor-based circuit, a D-type flip flop with Q* fed back
into D and the switches to the clock inputs would do it. An RC circuit
could handle the power on reset and another would do for debouncing.

The relay drive could be handled by a transistor switch (unspecified,
since the relays, power, and loads are unspecified), with appropriate
snubbers for the coil and load.

And the whole works would need one or more power supplies.

--
Rich Webb Norfolk, VA

 

[ml]

In article <bm3jh4ho26n7n4j0bblfn3ujn02fsiirg5@4ax.com>,
Rich Webb <bbew.ar@mapson.nozirev.ten> wrote:

On Tue, 11 Nov 2008 06:28:02 -0500, ml <m@di.net> wrote:

In article <d64eh4path1bnkktjuc3kcnvktd8qmbpfo@4ax.com>,
Rich Webb <bbew.ar@mapson.nozirev.ten> wrote:

On Sun, 09 Nov 2008 06:48:18 -0500, ml <m@di.net> wrote:

hi

was in a little over my head trying to find a group of about 4
positions or so on a strip or something

to control 4 small relays ultimately i need the switch to function
as on/off and need the membrane to be lighted on power 'on'

need a complete solution(keypad, encoder, connectors)


does anyone know where i can find perhaps a 'ready to go' setup
like this, dosn't have to be pretty,

What you have envisioned is probably not a standard stock item. The most
straightforward approach would be four 1/4" SPST toggle switches. Each
controls one relay with, if required, one set of contacts for the load
and one for an indicator lamp.

Digikey carries a 4-position membrane switch
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=360-2294-
ND
but you'd need to add the glue electronics.

i had no luck googling

I did. I'm sure any of these companies would be happy to provide you
with exactly what you're looking for. Some NRE cost or minimum order
quantity may be expected.

http://www.technigraphics.com/
http://www.techno-mark.com/
http://www.ssielectronics.com/default.aspx?pageId=2

hi

thanks very much for the reply was hoping that more might respond.

I think either I didn't write it well, i wasn't looking for a 4pole
switch. or toggles, but i understand that is 'easy'

if i were to use toggle switches then i wouldn't need relays but i
specifically was looking for membrane switches 4 on a strip or so

to control 4 seperate things

I did check out the digikey switch and there competitors but
as you mentioned no electronics that is the hard part for me.

The places you googled, i should have mentioned yeah i can google a
million places that sell membrane switches, non that will sell qty 1
or 2 nor do the necessarily sell electronics again at small qty

i am just trying to home brew something but don't really have
experience with momentry membranes to relay latching electronics

perhaps someone might know of such a place that either has detailed
schematics or small sample /turn key prototype like samples
etc??

Well, if I were doing this I'd probably grab a small microcontroller
with an internal RC oscillator for the clock, unless driven to another
solution by other requirements. The uC gives me for "free" a power-on
reset for the relays, software debouncing of the inputs, and I/O for the
switches, relays, and indicators. If you don't have a drawer full of
assorted micros within reach then something like a Parallax Basic Stamp
or an Arduino may do the trick.

For a non-processor-based circuit, a D-type flip flop with Q* fed back
into D and the switches to the clock inputs would do it. An RC circuit
could handle the power on reset and another would do for debouncing.

The relay drive could be handled by a transistor switch (unspecified,
since the relays, power, and loads are unspecified), with appropriate
snubbers for the coil and load.

And the whole works would need one or more power supplies.

<<<<>>>
Hi Rich

thanks very much for the info sounds good, btw it's 12vdc
1/2amp my original post mentioned 'ready to go' are you able
to point me to a place whereby i can buy either method you
mention? I have the need , i have the cash where can i buy it?
i am ready to go

I wasn't looking for and i don't mean this to sound rude pure
theory or a 'kit' i was sorta looking for plug n play as a last
resort, i can follow directions and build a 'kit' if all
parts and instructions are clear, but i am not smart enough to
for example take what you wrote above and turn it into a finished
product by myself if i was then i wouldn't post and have built it


i do sorta follow what you wrote at a high level, in fact I vaguely
imiganed something along those lines i just couldn't find it
anyplace and was hoping to 'get one'

again hope i didn't come accross unappreciative of your info
sounds great i am just itching to put it into service


any chance you know where i can get one of the above??

thanks much

 

[Rich Webb]

On Wed, 12 Nov 2008 06:08:52 -0500, ml <m@di.net> wrote:

thanks very much for the info sounds good, btw it's 12vdc
1/2amp my original post mentioned 'ready to go' are you able
to point me to a place whereby i can buy either method you
mention? I have the need , i have the cash where can i buy it?
i am ready to go

I wasn't looking for and i don't mean this to sound rude pure
theory or a 'kit' i was sorta looking for plug n play as a last
resort, i can follow directions and build a 'kit' if all
parts and instructions are clear, but i am not smart enough to
for example take what you wrote above and turn it into a finished
product by myself if i was then i wouldn't post and have built it


i do sorta follow what you wrote at a high level, in fact I vaguely
imiganed something along those lines i just couldn't find it
anyplace and was hoping to 'get one'

again hope i didn't come accross unappreciative of your info
sounds great i am just itching to put it into service


any chance you know where i can get one of the above??

It's very unlikely that exactly what you're looking for is available for
retail sale. Maybe the cat enthusiast forums? Or, you could get lucky
and find one, or similar, as surplus/overstock at the surplus outlets.

WRT kits, I haven't dug deeply into their catalogs recently, but some
places that may have something that could be adapted to your needs:

http://www.dontronics-shop.com/
http://www.kitsrus.com/
http://www.ramseyelectronics.com/
http://www.electronics123.com/

Good luck!

--
Rich Webb Norfolk, VA

 

[ml]

In article <dlklh497aqlkg5rffn9v6eb4dhmf9v2lek@4ax.com>,
Rich Webb <bbew.ar@mapson.nozirev.ten> wrote:

On Wed, 12 Nov 2008 06:08:52 -0500, ml <m@di.net> wrote:


thanks very much for the info sounds good, btw it's 12vdc
1/2amp my original post mentioned 'ready to go' are you able
to point me to a place whereby i can buy either method you
mention? I have the need , i have the cash where can i buy it?
i am ready to go

I wasn't looking for and i don't mean this to sound rude pure
theory or a 'kit' i was sorta looking for plug n play as a last
resort, i can follow directions and build a 'kit' if all
parts and instructions are clear, but i am not smart enough to
for example take what you wrote above and turn it into a finished
product by myself if i was then i wouldn't post and have built it


i do sorta follow what you wrote at a high level, in fact I vaguely
imiganed something along those lines i just couldn't find it
anyplace and was hoping to 'get one'

again hope i didn't come accross unappreciative of your info
sounds great i am just itching to put it into service


any chance you know where i can get one of the above??

It's very unlikely that exactly what you're looking for is available for
retail sale. Maybe the cat enthusiast forums? Or, you could get lucky
and find one, or similar, as surplus/overstock at the surplus outlets.

WRT kits, I haven't dug deeply into their catalogs recently, but some
places that may have something that could be adapted to your needs:

http://www.dontronics-shop.com/
http://www.kitsrus.com/
http://www.ramseyelectronics.com/
http://www.electronics123.com/

Good luck!

<<hi

yes i aggree that what i was looking for isn't easily
available, thats why i started out saying i can't google it, and
posted here hoping somone may know of that special place that does
or a shop that was willing to build a 1 off 'cheep'

those sites you posted seem nice i'll go check them out thanks for
all the help and time appreciate it

Ive kinda always wanted something like, this be nice if somone made a
board that you could easily adapte/plug in to some common membrane
switchs and had relay outs you could design some nice switchs
for little projects

and wouldn't seem the ckt would be too hard