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Light-direction upwards, see https://www.everlight.com/file/ProductFile/ITR1201SR10AR-TR.pdf reflective opto couple photo coupler package for Vishay CNY70 refective photo coupler/interrupter Vishay CNY70 refective photo coupler IR Receiver Vishay TSOP-xxxx, MINIMOLD package, see https://www.vishay.com/docs/82669/tsop32s40f.pdf IR Receiver Vishay TSOP-xxxx, CAST package, see https://www.vishay.com/docs/82493/tsop311.pdf package for Kodenshi SG-105 with PCB trace layout Checkpoint in case of crashes .../Unseen Servant/Unseen Servant.kicad_sch | 4890 width = 36; // [1:1:84] // margins from edges v_margin = hole_dist_top*2 + thickness; working_height = height - v_margin; working_increment = working_height / (8+tolerance/3); // generally-useful spacing amount for vertical columns of stuff working_increment = working_height / (8+tolerance/3); // generally-useful spacing amount for vertical columns of stuff col_left = thickness * 1; //right_rib_x = width_mm - col_right + tolerance*4; // column from edge plus hole radius // mounting holes to PCB edge 11.32mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 44-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, male, pitch 2.29x1.98mm, pin-PCB-offset 8.35mm, distance of mounting holes to PCB edge 15.979999999999999mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 9-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, male, pitch 2.29x2.54mm, pin-PCB-offset 9.4mm, see http://docs-europe.electrocomponents.com/webdocs/1585/0900766b81585df2.pdf 15-pin D-Sub connector edge mount solder cup female x-pin-pitch 2.77mm mounting holes 47.1mm, distance of mounting holes with circular drills, http://www.alps.com/prod/info/E/HTML/Encoder/Incremental/EC12E/EC12E1240405.html & http://cdn-reichelt.de/documents/datenblatt/F100/402097STEC12E08.PDF Alps rotary encoder, EC12E... With switch, vertical shaft, mounting holes 33.3mm, distance of mounting holes distance 33.3mm 37-pin D-Sub connector edge mount solder cup male x-pin-pitch 2.77mm mounting holes 33.3mm, distance of mounting holes 63.5mm, distance of mounting holes 47.1mm.

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