[sdiy] switch question

[Scott Gravenhorst]

Connect 1 and 2 together - this is the center post of an SPDT.  Then pin 8 is one
side and pin 7 is the other.



rude66 <rude66 at gmail.com> wrote:
>okay, this is what the switch does:
>
>switch off:
>
>1 shorts to 8
>2 shorts to -
>3 shorts to 4 and 5
>4 shorts to 3 and 5
>5 shorts to 3 and 4
>6 shorts to -
>7 shorts to -
>8 shorts to 1
>
>switch on:
>
>1 shorts to -
>2 shorts to 7
>3 shorts to 4 and 6
>4 shorts to 3 and 6
>5 shorts to -
>6 shorts to 3 and 4
>7 shorts to 2
>8 shorts to -
>
>would this in some way be spdt-able?
>
>@ jaco:
>they are nice, they feel nice too and they have exact square holes for
>them on the panel, so if possible i'd like to keep them.. others just
>wouldn't look as good. normally i'd just have used standard ones, so
>there'd have been no problem..
>
>ruud
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>On 12/6/06, Scott Gravenhorst <music.maker at gte.net> wrote:
>> rude66 <rude66 at gmail.com> wrote:
>> >i figured something like that, i've had these kind of 'multiples'
>> >before and that's why i referred to it as a 'spst'..
>> >
>> >okay, in the meantime i've learned that these things will most likely
>> >not work, so it's time for plan b.. i've located some spdt's that
>> >won't look as good, but i guess they'll have to do..;-)
>> >
>>
>> Try this: the pins appear to be organized in pairs. If it were 
>me designing it, I'd say that > each pair is a switch unit, SPST. 
>Without touching the switch button, see if there are any > pairs 
>shorted, write those down. Then see if there are any that are 
>open and write those > down. If there is a combination of open 
>and closed pairs without touching the button, then > it's 
>possible to wire it as at least one SPDT. With 4 like that, it's 
>possible that 2 are on > while 2 are off and that the state of 
>the switches reverses when the button is pushed. Or it > could 
>just be 4 x SPST, all on or all off. > > I've given far more than 
>$0.02 here, so I'm all out... > > > -- ScottG > > 
>--------------------------------------------------------- > -- 
>Scott Gravenhorst > -- Xilinx Spartan-3E Based Music Synthesizers 
>> -- FatMan: home1.gte.net/res0658s/fatman/ > -- NonFatMan: 
>home1.gte.net/res0658s/electronics/ > > 
>


-- ScottG

---------------------------------------------------------
-- Scott Gravenhorst
-- Xilinx Spartan-3E Based Music Synthesizers
-- FatMan: home1.gte.net/res0658s/fatman/
-- NonFatMan: home1.gte.net/res0658s/electronics/