Labels Milestones
Back1x4 Light emitting diode, 5 mm Small Signal NPN Transistor, TO-92 KK254 Molex header 2.54 mm 2x5 Audio Jack, 2 Poles (Mono / TS) | | | | | | J3 | 1 | 1 Hardware/lib/aoKicad | 1 | 4.7 uF | Polarized capacitor | | S1 | 1 | TL074 | Quad Low-Noise JFET-Input Operational Amplifiers, DIP-14/SOIC-14 Low-Power, Dual Operational Amplifiers, DIP-14/SOIC-14"/>