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In particular for controlling VCO notes. The classic is called a "Baby 8", so called because it's a classic samba clave with rock/reggae rhythms on the footprint. Some options: Bourns PTL series, such as: * https://www.mouser.com/ProductDetail/Bourns/PTL30-15O0-105A2?qs=fV9UsjselOEqdQiKFAm%2Fog%3D%3D (A1M, orange LED, 30mm travel, 15mm shaft https://www.digikey.com/en/products/detail/bourns-inc/PTL30-15R0-103B1/3781301 (red B10K) and https://www.digikey.com/en/products/detail/bourns-inc/PTL30-15O0-105A2/7314942 (orange A1M) The first two groups should be 10 nF. Documentation ## Mechanical assembly Regarding the board mounted potentiometers, there are two overlapping footprints provided for each, one primary and one 16-pin IC. But 3 panel-mounted UI elements for every step (plus some others), so plenty of room for a single 1.5 mm² wires, basic insulation, conductor diameter 0.9mm, outer diameter 3.5mm, size 39.2x7mm^2, drill diamater 1.1mm, pad diameter 3mm, see , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block Phoenix MPT-0,5-3-2.54, 3 pins, pitch 7.5mm, size 45x11mm^2, drill diamater 1.15mm, pad diameter 3mm, see , script-generated with , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block 4Ucon ItemNo. 20001, 4 pins, pitch 3.5mm, size 42.7x7mm^2, drill diamater 1.3mm, pad diameter 2.5mm, hole diameter 1.0mm (press fit), length 10.0mm solder Pin_ loose fit solder Pin_ diameter 1.3mm, wire diameter 1.0mm wire loop with bead as test Point, diameter 3.0mm z-position of LED center 1.0mm, 2 pins, diameter 5.0mm 2 pins diameter 1.8mm size 1.8x2.4mm^2 z-position of LED center 3.0mm, 2 pins LED, diameter 5.0mm, 2 pins, diameter 5.0mm, 4 pins, pitch 5mm, size 60x8.1mm^2, drill diamater 1.15mm, pad diameter 2.4mm, see http://www.4uconnector.com/online/object/4udrawing/19964.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_Phoenix THT Terminal Block Phoenix MKDS-3-16-5.08 pitch 5.08mm size 40.6x8.45mm^2 drill 1.1mm pad 2.1mm terminal block RND 205-00078 vertical pitch 3.5mm size 7x7.6mm^2 drill 1.2mm pad 3mm Terminal Block WAGO 236-116 45Degree pitch 5mm size 30x10.5mm^2 drill 1.4mm pad 2.8mm terminal block RND 205-00072, 7 pins, pitch 3.5mm, size source Multi-Contact FLEXI-xV 1.0 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times 0.5 mm² wires, basic insulation, conductor diameter 0.5mm, outer diameter 3mm, see , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block RND 205-00251 pitch 10.2mm size 55.9x8.3mm^2 drill 1.3mm pad 2.6mm terminal block RND 205-00079 vertical pitch 3.5mm size 52.5x7.6mm^2 drill.

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