3 button a/b/y

[breather-resistor]

Is there no way to have individual buttons for the A the B and Both (think lehle) without using either pic or cmos chips?  Am i condemned to the two switch system like whirlwind or R.G.'s...  Don't get me wrong I think its a great design but tree buttons is just so much more intuitive...

Any ideas???

Breather

[R.G.]

Sure, it's not that hard. The decisions to be made are whether you insist on metal-contact switches or can live with solid state switches.

The easiest way is with a small clot of CMOS to get the switch settings and drive the LEDs, then to manipulate two relays. A simpler to build way is with all of the logic inside a PIC. I think there's even a way to do it with purely relays, no other electronics at all.

[toneman]

So,  R.G.,
I've got this request for an ABC>Y+D pedal.
*IS* there a good momentary switch out there??
I mean one similar to the 3PDT that Aron sells>>(?)
Need to have a momentary sw for input to my PIC. 
plmk
afn
T

[breather-resistor]

Sure, it's not that hard. The decisions to be made are whether you insist on metal-contact switches or can live with solid state switches.

The easiest way is with a small clot of CMOS to get the switch settings and drive the LEDs, then to manipulate two relays. A simpler to build way is with all of the logic inside a PIC. I think there's even a way to do it with purely relays, no other electronics at all.

So, based on that, does anyone have any schematics or ideas about how this can be done?  I have never messed with CMOS or PIC chips and I guess I don't know where to start.  Any help R.G., I love the signal preservationn of yours is there a way that a pic or a cmos chip can just lay into that type of design to aid in the switching and how so?  Perhaps this is a better question for the Digital forum?

thanks
Breather

[R.G.]

I don't mind genning something up.

First, describe **exactly** how you want this to act so that even a non-electronics person could understand.

For instance, this is one possibility, don't know if it's exactly what you want:
1. Box has two inputs marked "A" and "B" and one output on 1/4" phone jacks.
2. Box has three footswitches, marked "A", "B" and "Y".
3. Box has three LEDs
4. LED A comes on when input A is connected to the output
5. LED B comes on when input B is connected to the output
6. Both LEDs go on when BOTH inputs are connected to the output
7. When footswitch A is pressed, input A is connected to the output no matter what the previous condition was.
8. When footswitch B is pressed, input B is connected to the output no matter what the previous condition was.
9. When footswitch Y is pressed, both A and B inputs are connected to the output no matter what the previous conditions was.
10. When input A is connected to the output and you press footswitch A again, nothing changes.
11. When input B is connected to the output and you press footswitch B again, nothing changes.
12. When both A and B are connected to the output and you press footswitch Y again, nothing changes.

That seems logical to me, but then it's not my box. How do you want YOUR box to work?

[R.G.]

I've got this request for an ABC>Y+D pedal.

Same comments. Define **exactly** how it works.

*IS* there a good momentary switch out there??

Yes.

I mean one similar to the 3PDT that Aron sells>>(?)

I'm not that familiar with the 3PDT that Aron sells.

Need to have a momentary sw for input to my PIC.

There are heavy duty momentaries with button tops, if that's what you mean.

[toneman]

Hey R.G.,
i'm not looking for a design, have that
just a link to some momentary (on) switches.

i found these on ebay---

(red)
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=300168723602&ssPageName=STRK:MEWA:IT&ih=020

(blue)
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=300170846401&ssPageName=STRK:MEWA:IT&ih=020

they are considered "horn buttons"...
wonder if they would work as a footswitch()

Have U ever used anything similar?
just point to a link.....

and.....there are these, very common,
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ih=020&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=300099100042&rd=1

but I wonder about their reliability()

any thoughts or links....

thanx
afn
T

[CGDARK]

Hey R.G.,
i'm not looking for a design, have that
just a link to some momentary (on) switches.

Check these:

http://www.smallbearelec.com/Detail.bok?no=25

http://www.smallbearelec.com/Detail.bok?no=26

http://www.smallbearelec.com/Detail.bok?no=672

http://pedalpartsplus.com/mm5/merchant.mvc?Screen=PROD&Store_Code=PPP&Product_Code=9004&Category_Code=SWI

CG

[toneman]

Had not thought of SmallBear... 
The "Soft-Touch"   look just like the ones on ebay... 
the ones from PedalParts have the white washer similar to Aron's.
thanx!!  for the linx CG!! 

T

[breather-resistor]

That is exactly the desing I was thinking R.G.,,, dead on.  With a little research on the matter it seems that pic chips basically come designed  to perform a certain function repeatedly so it seems that it is a matter of using the one with correct switching functions than manipulating any old pic chip to do it.   Please continue your thoughts I am anxious to see what you GEN up .

Breather