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Wolfshirt momentary octave footswitch

Started by Mojo Fandangle, May 09, 2015, 11:27:32 AM

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micromegas

Quote from: kgull on May 10, 2015, 07:26:15 PM
Short of using a relay or some kind of CMOS device to emulate a spdt, momentary octave on is about as good as it gets.

This setup should work just fine:
Quote from: Dallius Mcnoob on May 10, 2015, 05:39:36 AM
Thanks Steve and Adan.

I'm not sure if my logic makes sense but would the wiring shown in this photo cause both the footswitch and the finger switch to turn the octave on and off


well, not exactly this setup, as both rounded pads of the switch are already connected (both are the same point in the schematic). Yellow wire is ok where it is, the pink one should go to the square pad.
'My favorite programming language is solder' - Bob Pease

Software Developer @ bela.io

kgull

Quote from: micromegas on May 10, 2015, 09:08:37 PM
Quote from: kgull on May 10, 2015, 07:26:15 PM
Short of using a relay or some kind of CMOS device to emulate a spdt, momentary octave on is about as good as it gets.

This setup should work just fine:
Quote from: Dallius Mcnoob on May 10, 2015, 05:39:36 AM
Thanks Steve and Adan.

I'm not sure if my logic makes sense but would the wiring shown in this photo cause both the footswitch and the finger switch to turn the octave on and off


well, not exactly this setup, as both rounded pads of the switch are already connected (both are the same point in the schematic). Yellow wire is ok where it is, the pink one should go to the square pad.

Yep, missed that part  :)

TGP39

#17
The key is you have to solder the wires directly to the pcb pad. You can't piggyback onto the switch lugs because those lugs won't be connected.


Scratch what I said. This makes no sense because the lugs are attached to the pcb pads already.  :o

Steve.
Follow me on Instagram under PharmerFx.

TGP39

#18
Hey Adán,  I'm thinking again that even if he does hook up the momentary switch to lugs 1 and 2,  won't there still be an open circuit between lugs 1 and 2? Because the finger switch is the only connection still between lug 1 and 2 and that's open when the finger switch is off. Maybe he has to thread the pink wire into lug 1 and then into lug 2 where he meets the yellow wire in lug 2?  What do you think?

Steve.

Then again if he fused lug 1 and 2 the octave effect would always be on. I don't think it can be done with just the spst foot switch.

Steve.
Follow me on Instagram under PharmerFx.

kgull

With a NO SPST momentary switch, the only option is to turn the octave on when the switch is off. This is accomplished like so:


OTOH if you have a SPDT momentary switch, you can toggle the octave with either switch like so:

Mojo Fandangle

Thanks again everybody.
I'll try out all suggestions using aligator clips. I'm pretty sure I'll get something working.
"If you don't do it yourself, no-one else will do it yourself"

https://www.youtube.com/user/MarkDally

micromegas

Quote from: TGP39 on May 11, 2015, 12:43:55 AM
Hey Adán,  I'm thinking again that even if he does hook up the momentary switch to lugs 1 and 2,  won't there still be an open circuit between lugs 1 and 2? Because the finger switch is the only connection still between lug 1 and 2 and that's open when the finger switch is off. Maybe he has to thread the pink wire into lug 1 and then into lug 2 where he meets the yellow wire in lug 2?  What do you think?

Steve.

Then again if he fused lug 1 and 2 the octave effect would always be on. I don't think it can be done with just the spst foot switch.

Steve.
if he wires the spst between lugs 1&2 in the pcb, the circuit will be closed by the spst when the fingerswitch is off. There will be an open circuit but that would be closed by the spst itself.

Look at what kgull drawed in the previous post. In the pcb, connections 2 & 3 for the switch are the same. When the switch is off, the only thing that happens is that a loop is created between 2 & 3. When it's on, that point is connected to point 1, hooking up the octave section.
I think that you and alanp suggested to wire the spst in parallel, and I think that's the way to go too. The fingerswitch would be wired as madbean specifies in the buildoc and the spst should have one lug connected to point 1 in the pcb (not the fingerswitch) and the other lug to either point 2 or 3. So when the fingerswitch is opening the circuit, you could still close it with the spst.
'My favorite programming language is solder' - Bob Pease

Software Developer @ bela.io

TGP39

Quote from: micromegas on May 11, 2015, 07:05:20 AM
Quote from: TGP39 on May 11, 2015, 12:43:55 AM
Hey Adán,  I'm thinking again that even if he does hook up the momentary switch to lugs 1 and 2,  won't there still be an open circuit between lugs 1 and 2? Because the finger switch is the only connection still between lug 1 and 2 and that's open when the finger switch is off. Maybe he has to thread the pink wire into lug 1 and then into lug 2 where he meets the yellow wire in lug 2?  What do you think?

Steve.

Then again if he fused lug 1 and 2 the octave effect would always be on. I don't think it can be done with just the spst foot switch.

Steve.
if he wires the spst between lugs 1&2 in the pcb, the circuit will be closed by the spst when the fingerswitch is off. There will be an open circuit but that would be closed by the spst itself.

Look at what kgull drawed in the previous post. In the pcb, connections 2 & 3 for the switch are the same. When the switch is off, the only thing that happens is that a loop is created between 2 & 3. When it's on, that point is connected to point 1, hooking up the octave section.
I think that you and alanp suggested to wire the spst in parallel, and I think that's the way to go too. The fingerswitch would be wired as madbean specifies in the buildoc and the spst should have one lug connected to point 1 in the pcb (not the fingerswitch) and the other lug to either point 2 or 3. So when the fingerswitch is opening the circuit, you could still close it with the spst.

I see it now. So the footswitch connected to pcb spot 1 and spot 3 would work in closing the circuit when the footswitch is pressed down. Thanks Adán and Kgull.

Steve.
Follow me on Instagram under PharmerFx.