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BackThe components I used, I found: \* The Dailywell 3PDT and SPDT toggle switch | | | R8, R10, R12 | 3 | 2N3904 | Small Signal NPN Transistor, TO-92 R16, R17, R19, R20 | 4 | 100 nF | Unpolarized capacitor | | | | | | | Screws and spacers (see [build notes](build.md | | | | Tayda | A-111 | | Tayda | A-826 | | | S1 | 1 | SW_SPDT | SPDT miniature toggle switch | | J2 | 1 | LM358 | Low-Power, Dual Operational Amplifiers, DIP-14/SOIC-14 Low-Power, Dual Operational Amplifiers, DIP-8/SOIC-8/TSSOP-8/VSSOP-8