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Clean/Crunch/Lead Pedal (A/B/Bypass)


 
8/9/2004 4:45 PM
Ferdinand The Bull Clean/Crunch/Lead Pedal (A/B/Bypass)
I don't know about anyone else, but I want to have a clean/crunch/lead pedal. In other words, two distortion circuits in the same box, with three switches (FX1 or FX2 or Bypass). It would save me from those occasional "double-stomp" moves that don't always go smoothly.  
 
 
 
I drafted a rough schematic for this thang. It uses momentary switches, and two 4P4T relays.  
 
 
 
Chime in with any thoughts, improvements, etc..  
 
 
 
 
 
http://home.earthlink.net/~chriskellydesign/2FX_SWTCH.gif
 
8/13/2004 12:04 AM
jpl
brilliant!!  
at first glance I thought some thing was wrong but after a closer look...  
the only thing you might change is the leds don't need to be connected to the switch, you can put them in parallel with the coils or you might add a led for the "off" selection  
now can you do one with three loops? ;)  
 
jl
 
 
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8/17/2004 8:33 PM
Ferdinand The Bull A/B/C/Bypass?
Well I gave it a try. That 4th switch is a DPDT Momentary. One half for the coil of relay 3, the other half to kick relay 1 and 2 back to their "resting" positions. I took out the LEDs for clarity (good idea putting them in series with the coils). Maybe someone else can chime in with the bypass LED mod.  
 
 
 
http://home.earthlink.net/~chriskellydesign/3FX_SWTCH.gif
 
9/13/2004 8:48 PM
Ferdinand The Bull
email
PCB and Layout
I think I got it right...made a few changes to the schem.  
 
Still not tested--good luck.  
 
http://home.earthlink.net/~chriskellydesign/A_B_BYPASS3.pdf
 
9/14/2004 4:07 PM
Ferdinand The Bull
email
Updated again
Here is the latest.  
 
Four (4) DPDT relays now. Still no Bypass LED.  
 
http://home.earthlink.net/~chriskellydesign/A_B_BYPASS3.pdf
 
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