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BackSMD, 8 pin DIP socket A-004 4 Knobs Screws, nuts, and spacers (see [build notes](build.md)) | | | D1, D2 | 2 | 10k | Resistor | | Tayda | A-1157 or A-2425 | | R15, R20, R22 | 3 | A1M | Potentiometer | | | | R16, R17, R19, R20 **Potentiometer, 9 mm or 16 mm vertical board mount OR: | | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 | 8 | 1N4148 | Standard switching diode, DO-35"/>