Author Topic: Looking for 3PDT ON-ON-ON Toggle for UniVibe tremolo mod  (Read 202 times)

Kevin Mitchell

I need to do a temolo mod to a couple univibe pedals this week. For this I'll need a 2P3T switch. The easiest thing to do would be to use a rotary switch. But that's not what Kevin wants!

Does anyone know where 3PDT ON-ON-ON toggle switches are available? I think BLMS had them a while back but not any more.
Here's my wire diagram - assuming I correctly recall how these switches work;


Here's info on the mod if anyone's curious.

Thanks for any help.
-KM
« Last Edit: Yesterday at 09:41:50 AM by Kevin Mitchell »

Mark Hammer

Re: Looking for 3PDT ON-ON-ON Toggle for UniVibe tremolo mod
« Reply #1 on: Yesterday at 10:53:26 AM »
I realize it's "what Kevin wants".  But consider that the EHX Worm and Wiggler both use rotary switches to select their various capabilities.  If the esteemed Mr. Matthews can't get a toggle to do it, I doubt you're going to find it either.

Having said that, there are 3-position slide switches that can do MANY tricks.  Consider one of those.

Kevin Mitchell

Re: Looking for 3PDT ON-ON-ON Toggle for UniVibe tremolo mod
« Reply #2 on: Yesterday at 12:15:29 PM »
If the esteemed Mr. Matthews can't get a toggle to do it, I doubt you're going to find it either.

I'm not asking for the impossible. As I've said, I'm pretty sure these 3 position switches were once available. Not so much anymore. I'll likely have to submit and use a rotary. The slide switch isn't a bad idea. However I'm not sure if I'm up to the task to file the slots. Always a PITA.

Thanks, Mark.
-KM

davent

Re: Looking for 3PDT ON-ON-ON Toggle for UniVibe tremolo mod
« Reply #3 on: Yesterday at 01:01:01 PM »
Mouser has 4PDT's on-on-on for a small fortune.
https://www.mouser.ca/Electromechanical/Switches/Toggle-Switches/_/N-5g2j?P=1z0z2qmZ1z0z2o3

Digikey does as well, more expensive.

Never mind those, BLMS has a reasonably priced 4PDT.
https://lovemyswitches.com/taiway-4pdt-on-on-on-switch-solder-lug-short-shaft/
dave
"If you always do what you always did- you always get what you always got." - Unknown

Kevin Mitchell

Re: Looking for 3PDT ON-ON-ON Toggle for UniVibe tremolo mod
« Reply #4 on: Yesterday at 02:06:17 PM »
Thanks, Dave!

I had forgotten that BLMS does have 4PDT (ON-ON-ON) switches. I suppose that would do just as well  :icon_rolleyes:
https://lovemyswitches.com/taiway-4pdt-on-on-on-switch-solder-lug-short-shaft/

Was unsure how the throws work since there's no diagram. Well there's the datasheet but it's a mess :icon_lol: I suppose there's no harm in snagging a couple to try.

-KM
« Last Edit: Yesterday at 02:07:49 PM by Kevin Mitchell »

mth5044

Re: Looking for 3PDT ON-ON-ON Toggle for UniVibe tremolo mod
« Reply #5 on: Yesterday at 02:35:21 PM »
The BLMS switch tells you exactly how the throws work in the bottom left table on the data sheet picture. It is as your picture shows of the 3pdt, but with the extra row also flipping down in position 2.
« Last Edit: Yesterday at 02:37:06 PM by mth5044 »

Mark Hammer

Re: Looking for 3PDT ON-ON-ON Toggle for UniVibe tremolo mod
« Reply #6 on: Yesterday at 02:42:51 PM »
I will suggest that you leave a sufficient amount of time, or degree of sinking, to cool the unit down, between soldering connections to each lug.  At those prices, you don't want any heat buildup that could compromise the stability of the lugs in the plastic housing.

Kevin Mitchell

Re: Looking for 3PDT ON-ON-ON Toggle for UniVibe tremolo mod
« Reply #7 on: Yesterday at 03:34:09 PM »
I will suggest that you leave a sufficient amount of time, or degree of sinking, to cool the unit down, between soldering connections to each lug.  At those prices, you don't want any heat buildup that could compromise the stability of the lugs in the plastic housing.
It only took ruining one stomp switch to learn that lesson  :icon_redface:

And thanks, mth5044. I overlooked that part. Twas a late night.

Thanks.
-KM

PRR

Re: Looking for 3PDT ON-ON-ON Toggle for UniVibe tremolo mod
« Reply #8 on: Yesterday at 05:27:43 PM »
> datasheet but it's a mess

Agree. Here's my reading:

{edit: somehow the full image does not show on the PostImg page, but the Download there works fine...}
« Last Edit: Yesterday at 05:30:13 PM by PRR »

RickL

Re: Looking for 3PDT ON-ON-ON Toggle for UniVibe tremolo mod
« Reply #9 on: Yesterday at 09:38:27 PM »
I think you've got the second diagram wrong. My reading of the switch positions is 2-3, 5-6 (not 5-4), 8-9, 11-10. That would make sense since this switch is just two of the dp on-on-on switches in a single housing. The dp on-on-on switches (Small Bear sells them) can be configured as a sp3t switch with a single jumper so it makes sense that these switches can be configured as dp3t with two jumpers.

mth5044

Re: Looking for 3PDT ON-ON-ON Toggle for UniVibe tremolo mod
« Reply #10 on: Today at 02:02:36 AM »
> datasheet but it's a mess

Agree. Here's my reading:

{edit: somehow the full image does not show on the PostImg page, but the Download there works fine...}

I think you’re missing the 5/4 connection in the middle position!

Kevin Mitchell

Re: Looking for 3PDT ON-ON-ON Toggle for UniVibe tremolo mod
« Reply #11 on: Today at 08:19:40 AM »
Ohhh you guys  :icon_rolleyes:
.

-KM

R.G.

Re: Looking for 3PDT ON-ON-ON Toggle for UniVibe tremolo mod
« Reply #12 on: Today at 10:42:20 AM »
At the risk of complicating this further (  :)  ) the CD4053 works fine as an AC or DC switch. As long as you're under its max of 18V (I think this part of the vibe runs on 17-18Vdc) you could use it to do the switching and use any three position two pole switch to run the 4053. Might be cheaper.

This is just at first glance. I'm still working on first coffee.
R.G.

Quick IQ Test: If anyone in a governmental position suspected that YOU had top-secret information on YOUR computer, how many minutes would you remain outside a jail cell?

Kevin Mitchell

Re: Looking for 3PDT ON-ON-ON Toggle for UniVibe tremolo mod
« Reply #13 on: Today at 12:00:21 PM »
At the risk of complicating this further (  :)  ) the CD4053 works fine as an AC or DC switch. As long as you're under its max of 18V (I think this part of the vibe runs on 17-18Vdc) you could use it to do the switching and use any three position two pole switch to run the 4053. Might be cheaper.

This is just at first glance. I'm still working on first coffee.
Thanks, R.G. When the toggle seemed illusive your 4053 switching was my first go-to. Your site was down that night. My initial thought was to use a DPDT ON-ON-ON switch and a CD4053. This would be ideal but I'll avoid switching circuitry wherever I can  :icon_lol:

Although it would open the door for the use of an RGB status LED or even a tactile button instead of a switch   ;D
Maybe my next build will have all of those bells and whistles.


-KM