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Use 7.5mm holes, not 6mm - alpha pots - 9.8mm, +2mm - rotary - 11.5mm, +3.5mm -- biggest by far, maybe 12.6mm? SR2511 series are 11.43? Maybe more? Distance between pcb and front panel. - Current design uses six IDC 2×8 connectors with 4 positions D 3 pin Molex header 2.54 mm spacing 2 pin Molex header 2.54 mm spacing | | | | Tayda | A-804 | | R8, R10, R12 | 3 | 1k | Resistor | | C6, C7, C8, C9 D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 Standard switching diode, DO-35 | | | | | | | | | | Tayda | A-1157 or A-2425 | | | | | | | C2 | 1 Hardware/lib/aoKicad | 1 | ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8 | | | | J2 | 1 | B10k | Potentiometer | | | | | | R24, R26, R28 | 3 | 1k | Resistor | | | | | S1 | 1 | | | C6, C7, C8, C9 | 4 | 100 nF | Unpolarized capacitor | | | C3, C4, C10 | 1 Fireball/Fireball.kicad_pcb | 7889 Fireball/Fireball.kicad_sch | 4 .../PCB/precadsr_Gerbers/precadsr-F_Mask.gbr | 4 | 100 nF | Unpolarized capacitor | | 1 | Conn_01x04 | Pin header 2.54 mm spacing | Tayda | A-1955 | | | | | | R16, R18, R26 | 3 | 2N3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, TO-92"/> Low-Power, Quad-Operational Amplifiers, DIP-14/SOIC-14/SSOP-14 Dual Operational Amplifiers, DIP-14/SOIC-14 | | | Tayda | A-826 | | C6, C7, C8, C9 Schottky Barrier Rectifier Diode, DO-41 D3, D4, D5, D6, D7, D8, D9, D10 | 8 | 1N4148 | 100V 0.15A standard switching diode, DO-35 Push button switch, generic, two pins Switch, single pole normally-open tactile switch https://www.ckswitches.com/media/1973/ksc7.pdf C&K Switches 1P1T SMD PTS125.

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