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SPDT push button https://www.e-switch.com/system/asset/product_line/data_sheet/210/800U.pdf momentary / push-push button, h=23mm C&K PVA2 https://www.ckswitches.com/media/1343/pva.pdf momentary / push-push button, h=23mm C&K PVA1 https://www.ckswitches.com/media/1343/pva.pdf tact sw push 6mm tactile push button, 6x6mm e.g. PHAP33xx series, height=4.3mm tactile push button, 6x6mm e.g. PHAP33xx series, height=13mm FS5700 series pushbutton footswitch, DPDT, https://www.e-switch.com/system/asset/product_line/data_sheet/226/FS5700.pdf Switch with High Contact Reliability, Side-actuated Model, with Ground Terminal, with Boss SPST button tactile switch http://www.ckswitches.com/media/1479/kmr2.pdf CK components KMR2 tactile switch with signal lamp, generic K switch dual-pole double-throw DPDT 3pdt ON-ON D Screw terminal, single row, 01x03 D 2x5 pin shrouded header 2.54 mm spacing | Tayda | A-553 | | | Tayda | A-2939 | | Tayda | A-826 | | S1 | 1 | SW_SPDT | SPDT miniature toggle switch // reset (manual) -- this is the main (cylindrical or conical) knob shape, without the stem. [mm] stem_radius = 5; $fn=FN; /* [Panel] */ width = 38; // [1:1:84] /* [Holes] */ v_margin = hole_dist_top*2 + thickness; right_rib_x = width_mm - hole_dist_side - thickness; // additives - labels, etc // one more vertical to mount a circuit outside the full dev board (in some cases) Arduino + DAC https://www.youtube.com/watch?v=t3kUPjdiq0o for explainer https://drive.google.com/drive/folders/156nn9rClRLJplS4M46s56-Pibi86Z-Kp for schematics and .ino file uses an arduino nano (other options probably fine), two 74HC595 shift registers (accidentally a pile in my collection) and the MCP4922 DAC (others may work). Probably can build.

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