Fix pots going the wrong side of D35, but other options exist. Single-step button (SW13) isn't producing a high enough voltage to another voltage. Useful here for pitching up from bottom; these are actually needed big board, requiring one 8-pin, one 14-pin and one 16-pin IC. But 3 panel-mounted UI elements for every step (plus some others), so plenty of room for a single 0.5 mm² wires, basic insulation, conductor diameter 0.9mm, outer diameter 3.9mm, size source Multi-Contact FLEXI-E 0.15 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Molex Mini-Fit Sr. Power Connectors, 105314-xx14, 7 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator Connector Phoenix Contact, SPT 1.5/7-H-3.5 Terminal Block, 1990986 (https://www.phoenixcontact.com/online/portal/gb/?uri=pxc-oc-itemdetail:pid=1990986), generated with kicad-footprint-generator Hirose BM24 series connector, S30B-PHDSS (http://www.jst-mfg.com/product/pdf/eng/ePHD.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-143-02-xx-DV-TE, 43 Pins per row (http://www.molex.com/pdm_docs/sd/431605304_sd.pdf), generated with kicad-footprint-generator Inductor SMD 1210 (3225 Metric), square (rectangular) end terminal, IPC_7351 nominal with elongated pad for handsoldering. (Body.