Labels Milestones
BackTimer, 555 compatible, PDIP-8 | | | | J3 | 1 | 4.7 uF | Unpolarized capacitor | | U2 | 1 nF | Unpolarized capacitor | | | | | | Tayda | A-4349 | | | | R14, R15, R18 | 3 | A1M | Potentiometer | | | S2 | 1 nF | Unpolarized capacitor | | | | | | | | J7 | 1 | TL074 | Quad Low-Noise JFET-Input Operational Amplifiers, DIP-8/SOIC-8/TO-99-8 | | D6, D7 | 2 | | | | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 | 8 | 1N4148 | 100V 0.15A standard switching diode, DO-35 Pin header 2.54 mm spacing"/>