Labels Milestones
BackPCB cutout, light-direction downwards, see http://www.kodenshi.co.jp/products/pdf/sensor/photointerrupter_ref/SG-105.pdf Laser Diode, TO-56, 3pin lightpipe triple tower right angle SPDT push button https://www.e-switch.com/system/asset/product_line/data_sheet/210/800U.pdf momentary / push-push button, h=17.5mm.
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X="5.4" y="3.3"/>
See why e49f4ab127dc081ee1c77dd21e80d128628a1152 Size 13.2x6.2mm^2, drill diamater 1.3mm, pad diameter 3mm. - 350mil SMD 2x-dip-switch SPST , Slide.