Orienting and Fitting a Rotary Switch on a PCB

[lg58]

Hi,

This is the Effects Layouts  EF120. Here's the PDF:

 http://effectslayouts.com/wp-content/uploads/2023/04/EF120-build-doc-2.pdf

I want to solder in the 2P6T rotary switch (made by Alpha) and have questions.

The switch has two pins in the center area, they are wider that the corresponding PCB holes, what's the best fix? At first I thought bend them and shove them in, but now I think add the fitting holes in the PCB then just jump it to where it's supposed to go(?) Also, on the underside of the PCB (which I didn't take a pic of) it looks like only one pin has a trace, maybe the other is just to make it sturdy (I should check the schematic).

How do I orient the switch? Maybe I'm wrong here, but it seems like there are two ways it can go in. I could just breadboard at this point before soldering and figure it out(?)

OK, one of my first projects. I initially bought rotary switches with solder lugs then realized it's through hole pins...so I'm getting closer. Thanks!

Lee G.

[jwin615]

Only one pole is used.
I believe the pcb was layed out for this style rotary(note, this is the exact one, just for illustration).
https://stompboxparts.com/switches/1-pole-12-position-rotary-switch-pcb-mount/

If the outer pins align, you could run a short jumper wire from the center pin to the pad. Bend the pin up a little to give clearance.
If the outer pins don't align, I'd search out the correct switch.
Since it actually operating as a single pole, you could use the rotary linked. They have a pin to set the number positions to use.
If you use your rotary, be sure.to clip off the side table on the bottom and one pin up top.

[lg58]

OK, I think I'll get the switch you cited above. This is great info, thank you!

[jwin615]

Sure
 I'd recommend PMing storyboardist and confirm it will work first. They may recommend another one.
Not sure which pole it's using. You'll certainly have to make sure it is turned correctly.
Also, *most* pedal pcbs I've seen use that type of switch, for future reference.
I'll see if I have any effectslayouts pcbs that have a rotary and check the footprint.

[jwin615]

Here's some more varieties on the cheap if you're willing to wait for them

https://a.aliexpress.com/_mtAlD58

Edit, not sure if you need rs16 or rs26
Guessing that's mm diameter

[lg58]

So I ordered the suggested switch and it fit
 like a glove, no doubt it's the correct part.
But, it's continuing to be a learning experience!
 Yeah, I soldered It in face-up on the component
 side of the board, real clean soldering job, proud
  of myself then...whoa I soldered it to the wrong
 side. I just ordered a solder sucker.

[jimilee]

So I ordered the suggested switch and it fit
 like a glove, no doubt it's the correct part.
But, it's continuing to be a learning experience!
 Yeah, I soldered It in face-up on the component
 side of the board, real clean soldering job, proud
  of myself then...whoa I soldered it to the wrong
 side. I just ordered a solder sucker.

Solder wick will be an asset as well.


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