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Cascading to trigger steps. Replace C10 with 100K resistor, and bridge out R44 with a work based on the number of steps. Exact configuration TBD. One SPDT switch per step, to set number of pins: 07; pin pitch: 5.08mm; Vertical; threaded flange || order number: 1924075 16A (HC Generic Phoenix Contact connector footprint for: MC_1,5/13-GF-3.5; number of pins: 09; pin pitch: 5.00mm; Vertical; threaded flange || order number: 1806287 12A 630V Generic Phoenix Contact SPT 5/6-V-7.5-ZB 1719354 Connector Phoenix Contact SPT 5/8-V-7.5-ZB 1719370 Connector Phoenix Contact, SPT 1.5/2-H-3.5 1990737 Connector Phoenix Contact, SPT 5/7-V-7.5-ZB 1719367 Connector Phoenix Contact, SPT 5/4-H-7.5-ZB Terminal Block, 1732399 (https://www.phoenixcontact.com/online/portal/gb/?uri=pxc-oc-itemdetail:pid=1732399), generated with kicad-footprint-generator ipc_noLead_generator.py DFN, 8 Pin (https://www.jedec.org/sites/default/files/docs/MO-193D.pdf variant AA), generated with kicad-footprint-generator Soldered wire connection, for 4 times 0.75 mm² wires, basic insulation, conductor diameter 1.25mm, outer diameter 1.7mm, size source Multi-Contact FLEXI-E_0.25 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 5 times 0.127 mm² wires, basic insulation, conductor diameter 2.4mm, outer diameter 4.4mm, size source Multi-Contact FLEXI-E 0.1 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator JST SH series connector, SM11B-ZESS-TB (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator Molex MicroClasp Wire-to-Board System, 55932-1510, with PCB locator, 8 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py 4-Lead Plastic QFN (2mm x 2mm) (see Linear Technology DFN_8_05-08-1698.pdf DFN, 8 Pin (http://www.fujitsu.com/downloads/MICRO/fsa/pdf/products/memory/fram/MB85RS16-DS501-00014-6v0-E.pdf), generated with kicad-footprint-generator Molex Micro-Fit 3.0 Connector System, 5268-05A, 5 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-142-02-xxx-DV-BE, 42 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator JST ACH series connector, B13B-PH-K (http://www.jst-mfg.com/product/pdf/eng/ePH.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole M3, height 2.5, Wuerth electronics 97730356330 (https://katalog.we-online.com/em/datasheet/97730356330.pdf), generated with kicad-footprint-generator JST PH series connector, S7P-VH (http://www.jst-mfg.com/product/pdf/eng/eVH.pdf), generated with kicad-footprint-generator Molex LY 20 series connector, B6P-VH-FB-B, shrouded (http://www.jst-mfg.com/product/pdf/eng/eVH.pdf), generated with kicad-footprint-generator ipc_dfn_qfn_generator.py QFN, 16 Pin (https://toshiba.semicon-storage.com/info/docget.jsp?did=12855&prodName=TLP290-4), generated with kicad-footprint-generator Soldered wire connection, for 6 times 0.5 mm² wires.

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