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    )
    (path "/9d35980c-5e29-4b0e-9d43-7e7f4322563d"
      (reference "C4") (unit 1) (value "20nF") (footprint "Capacitor_THT:CP_Axial_L10.0mm_D4.5mm_P15.00mm_Horizontal")
    )
    (path "/b10a43fe-d13a-4fb1-a50c-7b1f30f48d03"
      (reference "D1") (unit 1) (value "BPW34") (footprint "OptoDevice:Osram_DIL2_4.3x4.65mm_P5.08mm")
    )
    (path "/2754f043-5635-4476-8b6d-f29f770010d9"
      (reference "Q1") (unit 1) (value "2N3904") (footprint "Package_TO_SOT_THT:TO-92_Inline")
    )
    (path "/a370fd4a-34e4-4232-8697-46cf66b59556"
      (reference "Q2") (unit 1) (value "2N7000") (footprint "Package_TO_SOT_THT:TO-92_Inline")
    )
    (path "/7c319580-cb25-4fc4-9979-d0ee7a61d9c6"
      (reference "R1") (unit 1) (value "10M") (footprint "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal")
    )
    (path "/2965a1e9-cb8f-4d9b-93e0-95843a6dff7e"
      (reference "R2") (unit 1) (value "1.5M") (footprint "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal")
    )
    (path "/b1ebc51b-4675-4add-90c9-9d5d636ee59d"
      (reference "R3") (unit 1) (value "56k") (footprint "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal")
    )
    (path "/52670855-d56c-4ed9-aed5-150babc74c48"
      (reference "R4") (unit 1) (value "150k") (footprint "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal")
    )
    (path "/7b779375-8e0b-407d-a23c-4b2ad0fa5548"
      (reference "R5") (unit 1) (value "1k") (footprint "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal")
    )
    (path "/fc08777f-d678-4bc4-8021-8a14b6505c88"
      (reference "RV1") (unit 1) (value "250kΩ") (footprint "Potentiometer_THT:Potentiometer_Vishay_T7-YA_Single_Vertical")
    )
    (path "/97a65248-049b-46c4-a18a-6ecb31c5aa61"
      (reference "SW1") (unit 1) (value "SW_SPST") (footprint "Button_Switch_THT:SW_DIP_SPSTx01_Piano_10.8x4.1mm_W7.62mm_P2.54mm")
    )
    (path "/c3212f85-cf66-4f7f-8b36-26a0c66bbcc2"
      (reference "U1") (unit 1) (value "LM358") (footprint "Package_DIP:DIP-8_W7.62mm")
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)