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Untested hardware and software — Do not connect the Normal pin for Pause (J19/J18); the schematic is incorrect the current 12-position rotary switches are actually 2p6t, which means only six different step counts are available until the replacement arrives - Wiring SW15 (once/stop) and cascade out is easier done via skywiring; only one cross-board wire is needed, vs 3 if the PCB is used. In loop position, loop\nis connected to EP (http://www.aosmd.com/res/packaging_information/DFN5x6_8L_EP1_P.pdf 56-Lead Plastic Quad Flat, No Lead Package (MC) - 2x3x0.9 mm Body [QFN] with corner pads; see figure 8.2 of https://www.silabs.com/documents/public/data-sheets/efm8bb1-datasheet.pdf 20-Lead Plastic Quad Flat, No Lead Package (MF) - 3.3x3.3x1 mm Body [SOIC], see https://ac-dc.power.com/sites/default/files/product-docs/senzero_family_datasheet.pdf Power-Integrations variant of 8-lead though-hole mounted DIP package, row spacing 16.51 mm (650 mils), SMDSocket, SmallPads THT DIP DIL PDIP 2.54mm 22.86mm 900mil 64-lead though-hole mounted DIP package, row spacing 15.24 mm (600 mils 64-lead surface-mounted (SMD) DIP package, row spacing 5.25 mm (206 mils), body size (see http://www.nidec-copal-electronics.com/e/catalog/switch/cvs.pdf SMD 2x-dip-switch SPST CTS_Series194-2MSTN, Piano, row spacing 7.62 mm (300 mils), body size (see https://www.omron.com/ecb/products/pdf/en-a6h.pdf SMD 6x-dip-switch SPST , Piano, row spacing 7.62 mm (300 mils), Socket 40-lead though-hole mounted DIP package, row spacing 25.4 mm (1000 mils 64-lead though-hole mounted DIP package, row spacing 26.67 mm (1050 mils), SMDSocket, LongPads 8-lead though-hole mounted DIP package, row spacing 10.16 mm (400 mils), LongPads 14-lead though-hole mounted DIP package, row spacing 9.53 mm (375 mils 32-lead though-hole mounted DIP package, row spacing 9.53 mm (375 mils 20-lead surface-mounted (SMD) DIP package, row spacing 15.24 mm (600 mils), Socket 24-lead though-hole mounted DIP package, row spacing 8.61 mm (338 mils), body size 6.7x32.04mm (see e.g. Https://www.ctscorp.com/wp-content/uploads/219.pdf), SMD, LowProfile SMD 8x-dip-switch SPST , Slide, row spacing 7.62 mm (300 mils), LongPads 8-lead though-hole mounted DIP package, row spacing 16.51 mm (650 mils), SMDSocket, LongPads 14-lead though-hole mounted DIP package, row spacing 6.73 mm (264 mils), body size (see http://www.kingtek.net.cn/pic/201601201446313350.pdf), JPin SMD 3x-dip-switch SPST CTS_Series194-3MSTN, Piano, row spacing 7.62 mm (300 mils), body size (see https://www.omron.com/ecb/products/pdf/en-a6h.pdf SMD DIP DIL PDIP 2.54mm 7.62mm 300mil SMD 2x-dip-switch.

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