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And spacers (see [build notes](build.md)) | | | | | | | C9 | 4 .../PCB/precadsr_Gerbers/precadsr-F_Mask.gbr | 4 | | J2 | 1 | B20k | Potentiometer | | | Tayda | A-4349 | | | C3 | 1 | ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8 | | R6, R8 | 2 | 1N5817 | Schottky diode | | | C3 | 1 nF | Unpolarized capacitor | .

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