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I am trying to build this version of the Big Muff V7 on Eagle but can't seem to understand the schematic quite well. As you can seen on the image , there are couple 3 switches, sw 1a , sw 1b, and sw 1c , i can't understand how to connect those to the pedal switch , a.k.a Leg Switch .. My question is does anyone know how should i connect that switch to the rest of the schematic as i am quite confused ? Also does anyone have the Eagle footprint of those TRS female jack connectors ? enter image description here enter image description here

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  • \$\begingroup\$ Is that just 3 contacts on the main button? To disconnect power and provide a bypass path when your not using the unit? Like a DT3P switch? \$\endgroup\$ – MadHatter Apr 4 '18 at 4:14
  • \$\begingroup\$ Also, any reason your making the Soviet USSR version? \$\endgroup\$ – MadHatter Apr 4 '18 at 4:15
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    \$\begingroup\$ The footswitch is a 3PDT switch, it has 3 separate double throw switches in the same switch body. This page has a good description of how to wire to it. \$\endgroup\$ – Steve G Apr 4 '18 at 7:51
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    \$\begingroup\$ Sw1C is almost certainly drawn incorrectly on that diagram, also the track marked 'ground' is nothing of the sort, being in fact the bypass path. \$\endgroup\$ – Dan Mills Apr 4 '18 at 10:43
  • \$\begingroup\$ @SteveG Thank you so much for the link for the explanation on the switch, it was very helpful . \$\endgroup\$ – Tommy D Apr 5 '18 at 21:12

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