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Proper hole sizes threeUHeight = 133.35; //overall 3u height panelOuterHeight =128.5; panelInnerHeight = 110; //rail clearance = ~11.675mm, top and bottom mountSurfaceHeight = (panelOuterHeight-panelInnerHeight-railHeight*2)/2; hp=5.08; mountHoleDiameter = 3.2; mountHoleRad =mountHoleDiameter/2; hwCubeWidth = holeWidth-mountHoleDiameter; offsetToMountHoleCenterY=mountSurfaceHeight/2; offsetToMountHoleCenterX=hp;//1hp margin on each - Could add a switch to adjust CV output range, switch between 5v and 2.5v max (or whatever is configured). Momentary-normal-off pushbutton to manually reset. LEDs: One per step, to indicate direction? Pointer2 = 1; $n > 0; $abs = preg_replace($re, '/', $abs, -1, $n)) {} $re = array('#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#'); for($n=1; $n>0; $abs=preg_replace($re, '/', $abs, -1, $n)) {} /* absolute URL is ready! */ left_rib_x = thickness * 1; //right_rib_x = width_mm - h_margin; input_column = h_margin; col_middle = col_left + (15.6 + 1.5 + 7 segment yellow LED 4 digit 7 segemnt blue LED, right hand decimal, https://docs.broadcom.com/docs/AV02-1589EN 2 Digit 7 segment green One digit 7 segment green LED One digit 7 segment high efficiency red, https://docs.broadcom.com/docs/AV02-2553EN One digit 7 segment green -1 overflow 7 segment orange LED with photo IC package for diode bridges, row spacing 8.61 mm (338 mils), body size 9.78x7.26mm (see e.g. Https://www.ctscorp.com/wp-content/uploads/206-208.pdf 11x-dip-switch SPST , Slide, row spacing 15.24 mm (600 mils 64-lead though-hole mounted DIP package, row spacing 9.53 mm (375 mils SMD DIP Switch SPST Slide 5.08mm 200mil SMD JPin SMD 1x-dip-switch SPST , Slide, row spacing 7.62 mm (300 mils), body size 9.78x4.72mm (see e.g. Https://www.ctscorp.com/wp-content/uploads/219.pdf), SMD, LowProfile SMD 7x-dip-switch SPST , Slide, row spacing 6.73 mm (264 mils), body size 9.78x17.42mm (see e.g. Https://www.ctscorp.com/wp-content/uploads/209-210.pdf), LowProfile 10x-dip-switch SPST Omron_A6S-1010x, Slide, row spacing 7.62 mm (300 mils), body size 6.7x26.96mm (see e.g. Https://www.ctscorp.com/wp-content/uploads/219.pdf), SMD, LowProfile SMD 1x-dip-switch SPST Omron_A6S-110x, Slide, row spacing 7.62 mm (300 mils), Socket 8-lead though-hole mounted DIP package, row spacing 16.51 mm (650 mils), SMDSocket, LongPads 24-lead though-hole mounted DIP package, row spacing 7.62 mm (300 mils), SMDSocket, SmallPads THT DIP DIL PDIP 2.54mm 22.86mm 900mil SMDSocket SmallPads 22-lead though-hole mounted DIP package, row spacing 8.61 mm (338 mils), body size (see http://www.kingtek.net.cn/pic/201601201417455112.pdf SMD 8x-dip-switch SPST Copal_CHS-08B, Slide, row spacing 8.61 mm (338 mils), body size (see http://www.kingtek.net.cn/pic/201601201417455112.pdf SMD 8x-dip-switch SPST KingTek_DSHP08TJ, Slide, row spacing 7.62 mm (300 mils), body size 6.7x16.8mm (see e.g. Https://www.ctscorp.com/wp-content/uploads/206-208.pdf 7x-dip-switch SPST , Slide, row spacing 6.15 mm (242 mils), body size (see https://www.omron.com/ecb/products/pdf/en-a6h.pdf.

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