Blender pedal WTB

[cegrant]

WTBuild

WTBuy

I want to build a blender pedal but I do not understand schematics. I can solder well. I would like it to be a blender knob with in/out and send/ return. No toggle if possible.

If all else fails I want to buy a T1m blender or a jhs blender. I am not a fan of the larger xotic version.

 

[ex-tension]

Let's see if this helps:
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[cegrant]

Let's see if this helps:
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That's exactly what I want. Now can someone tell what the symbols mean.