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| ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8 | | Tayda | A-2939 | | | | | | | | | | | Tayda | A-1624 or A-2969 | | | | | | J1 | 1 | 10nF | Ceramic capacitor | | | Tayda | A-1531 or A-557 | | | | Tayda | A-826 | | | | | | | R4, R12, R13 | 3 | A1M | Potentiometer | | | | Tayda | A-1847 | | | | | Tayda | A-111 | | | | | | | | | C3, C4, C10 | 1 | TL074 | Quad operational amplifier, DIP-14 | | U1 | 1 | Conn_01x07 | *(optional) SIP socket, 2.54 mm, 1x10 | | | | Tayda | A-3588 | | | | | | C12 | 1 | B10k | \*\*Potentiometer, 9 mm or 16 mm vertical board mount | | | Screws and spacers (see [build notes](build.md | | J1 | 1 | 4.7 uF | Polarized capacitor | | | | | | | Tayda | A-1672 | | | | | | | C10 | 1 Hardware/lib/aoKicad .

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