Labels Milestones
BackSocket | | R3, R7 | 3 | 100R | Resistor | | | | R15, R20, R22 | 2 | 1M | Resistor | | | R15, R20, R22 | 3 | A1M | Potentiometer | | | 2 | 1nF | Film capacitor | | | S3 | 1 | ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8"/>