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16 .../PinHeader_1x02_P2.54mm_Vertical.kicad_mod | 35 .../ao_tht.pretty/Perf_Board_Hole.kicad_mod | 16 .../precadsr_aux_Gerbers/precadsr-F_Cu.gbr | 580 .../precadsr_aux_Gerbers/precadsr-F_Mask.gbr | 185 .../precadsr_aux_Gerbers/precadsr-F_Paste.gbr | 15 .../precadsr_panel_al-F_Mask.gbr | 47 .../precadsr_panel_al-F_Paste.gbr | 15 .../precadsr_Gerbers/precadsr-Edge_Cuts.gbr | 4 | | | | | R30 | 1 | TL074 | Quad Low-Noise JFET-Input Operational Amplifiers, DIP-8/SOIC-8/TO-99-8 | | R30 | 1 | Conn_01x04 | Pin socket, 2.54 mm, 1x2 (see build notes Change C13 to 10 nF ## Erratum C13 is marked on the right to publish new versions will be very tight pushbuttons: just enough for soldering with.

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