Reduce the font size to 9mm and align it precisely for repeatability Change transistor footprint to inline_wide, fix DRC ground plane Updates from real TL0x4, fix pots being backwards, tighten up schematic, fit letter instead of latch, https://www.neutrik.com/en/product/nc3fahl-0 A Series, Chassis connector Phoenix H male (A series layout), mates with Phoenix MSTB 2,5/3-ST, horizontal PCB mount, black chrome shell, https://www.neutrik.com/en/product/nc5fbv-b B Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, steel retention lug, horizontal PCB mount, retention spring instead of latch, https://www.neutrik.com/en/product/nc3fah2-0 A Series, 3 pole female receptacle, grounding: mating connector shell and front panel, vertical PCB mount, black chrome shell, https://www.neutrik.com/en/product/nc3fbv1-b B Series, 3 pole female XLR receptacle, grounding: without ground / shell contact, vertical PCB mount, https://www.neutrik.com/en/product/nc3mbv-1 B Series, 3 pole female XLR receptacle, grounding: mating connector shell to pin1 and front panel, vertical PCB mount, https://www.neutrik.com/en/product/nc3mbhl B Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell to pin1 and front panel, vertical PCB mount, replaces NL8MD-V, https://www.neutrik.com/en/product/nl8mdxx-v 4 contacts, 3.5mm audio plug, https://www.cuidevices.com/product/resource/pdf/sp-3541.pdf DC Barrel Jack, http://www.cui.com/product/resource/pj-036ah-smt.pdf Barrel Jack, https://www.cliffuk.co.uk/products/dcconnectors/FC681465S.pdf Surface-mount DC Barrel Jack, https://cdn-shop.adafruit.com/datasheets/21mmdcjackDatasheet.pdf Barrel jack connector (5.5 mm outer diameter, generated with kicad-footprint-generator Molex MicroClasp Wire-to-Board System, 55935-0910, with PCB cutout, light-direction upwards, see http://www.kodenshi.co.jp/products/pdf/sensor/photointerrupter_ref/SG-105.pdf package for Siemens SFH900 reflex photo interrupter/coupler/object detector.