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Goes down when resistance goes up, opposite to expectation. Glide fix - Single-step button (SW13) isn't producing a high enough voltage to trigger steps. Replace C10 with 100K resistor, and bridge out R44 with a 7-segment display with LED and photoresistor 3 Lead Plastic Package OnSemi CASE 100AQ for QRE1113, see https://www.onsemi.com/pub/Collateral/QRE1113-D.PDF OnSemi CASE 100AQ for QRE1113, see https://www.onsemi.com/pub/Collateral/QRE1113-D.PDF OnSemi CASE 100AQ for QRE1113, see https://www.onsemi.com/pub/Collateral/QRE1113-D.PDF OnSemi CASE 100CY, light-direction upwards, see http://www.kodenshi.co.jp/products/pdf/sensor/photointerrupter_ref/SG-105.pdf Laser Diode, TO5-like (D=9mm), 3pin Laser Diode, TO-3.3mm, 3pin Laser Diode, TO-38-ICut, 3pin Laser Diode, TO-3.3mm, 3pin Laser Diode, TO18-like (D=5.6mm), 3pin Laser Diode, TO5-like (D=9mm), 3pin Laser Diode, TO5-like (D=9mm), 3pin Laser Diode, TO-38-ICut, 3pin Laser Diode, TO-56, 3pin lightpipe triple tower right angle stacked dual USB 3.0, type A, Horizontal, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=292303&DocType=Customer+Drawing&DocLang=English USB A connector https://www.we-online.com/catalog/datasheet/614004134726.pdf Stacked USB A connector https://www.we-online.com/catalog/datasheet/614004134726.pdf Stacked USB A connector http://katalog.we-online.de/em/datasheet/61400826021.pdf A,phenol MUSB_D511, USB B receptable with flange, bottom-mount, SMD, right-angle (http://www.molex.com/pdm_docs/sd/473460001_sd.pdf Micro B horizontal SMD USB Micro-B receptacle, http://www.mouser.com/ds/2/445/629105150521-469306.pdf USB Mini-B 5-pin SMD connector, http://downloads.lumberg.com/datenblaetter/en/2486_01.pdf USB USB_B USB_Mini connector usb mini receptacle vertical Hirose DF12C SMD, DF12C3.0-50DS-0.5V, 50 Pins per row (https://www.hirose.com/product/document?clcode=CL0537-0694-9-81&productname=DF12C(3.0)-50DS-0.5V(81)&series=DF12&documenttype=2DDrawing&lang=en&documentid=0000994748), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-118-02-xxx-DV-LC, 18 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator Mounting Hardware, external M3, height 7, Wuerth electronics 97730356330 (https://katalog.we-online.com/em/datasheet/97730356330.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 20 Pin (https://www.ti.com/lit/ml/msop002a/msop002a.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole M3, height 12, Wuerth electronics 97730406330 (https://katalog.we-online.com/em/datasheet/97730406330.pdf), generated with kicad-footprint-generator JST PHD series connector.

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