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Six different step counts are available until the replacement arrives - Wiring SW15 (once/stop) and cascade out is easier done via skywiring; only one tl074 and support components, so tiny PCB should be possible, too * Manual trigger * See manual step (sw13) // 1 rotary switch with Signal Lamp, generic K switch single-pole double-throw spdt ON-ON D Push button switch, normally closed, generic, four pins D Push button switch OFF-(ON CMOS General Purpose Timer, 555 compatible, PDIP-8 | | R23, R24, R25, R27 Switch, triple pole double throw, separate symbols 2x5 pin shrouded header 2.54 mm spacing 2 pin Molex connector 2.54 mm spacing Q1, Q2, Q3, Q4, Q5 | 5 | 2N3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, TO-92 | | | | C6, C7, C8, C9 Schottky Barrier Rectifier Diode, DO-41 D3, D4, D5, D8, D9, D10 | 8 pin connector, PD-30, http://www.cui.com/product/resource/pd-30.pdf connector 3-pin PD-30S power DIN 3-pin nonstandard DIN connector, shielded, PD-30S, http://www.cui.com/product/resource/pd-30s.pdf connector 3-pin PD-30 power DIN shielded Right-angle standard banana jack, http://www.caltestelectronics.com/images/attachments/P315100rH_drawing.pdf DEUTSCH DT header 12 pin connector, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F215079%7FY1%7Fpdf%7FEnglish%7FENG_CD_215079_Y1.pdf%7F215079-4 connector TE-Connectivity Micro-MaTch Vertical 1-215079-6 8-215079-16 TE-Connectivity Micro-MaTch female-on-board top-entry thru-hole 8 pin SIM connector for 2.4mm PCB's with 70 contacts (not polarized Highspeed card edge connector for 1.6mm PCB's with 05 contacts (polarized Highspeed card edge card connector socket for 2.36mm PCBs, vertical, alignment pins (source: https://suddendocs.samtec.com/prints/hsec8-1xxx-xx-xx-dv-x-xx-footprint.pdf.

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