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BackPDF' (#2) from schematic by Eeschema 5.1.10-88a1d61d58~90~ubuntu20.04.1 Component Count: 77 Refs 3 pin Molex connector KK254 Molex header 2.54 mm spacing | Tayda | A-3186 | | | | | 14 pin DIP socket A-004 4 Knobs Screws, nuts, and spacers (see build notes) 1 SIP socket, 2.54 mm, 1x4 | | | J7 | 1 | TL074 | Quad operational amplifier, DIP-14