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Lattice caBGA-381 footprint for the articles that helped implement this. Ct = -0.1; // circle translate? Not sure. Circle_radius = knob_radius_top; // just match the top surface, or not. // Scale factor for the sake of code complexity. Odd values are -=1 difference() { union() { cube([board_width, board_height, thickness]); linear_extrude(thickness) polygon([[0,0], [(board_width-insert_width)/2, -insert_depth], [board_width-(board_width-insert_width)/2, -insert_depth], [board_width, 0]]); Update 'Samba Reggae 2' Samba Duro Pages Rhythms Table of Contents PSU (power supply unit) VCO (Voltage-controlled oscillator) Sequencer PSU (power supply unit) VCO (Voltage-controlled oscillator) Sequencer PSU (power supply unit) VCO (Voltage-controlled oscillator) Sequencer PSU (power supply unit Outputs ±12V DC, +5V DC, and passes CV and trigger or gate per step. (10 Momentary-normal-off pushbutton to manually reset. LEDs: One per step, to set output voltages. (10) One potentiometer for internal clock rate. Binary files a/Schematics/Fireball_VCO.pdf and /dev/null differ vertex -0.95 4.22131 20.5 vertex 0.95 4.22131 20.5 vertex 1 6.40171 12.8528 vertex 1 6.3311 13.3597 vertex -1 6.28946 13.3638 vertex 1 3.18579 20.5 vertex 0.95 5.78941 6.73694 vertex -0.95 0 20.5 vertex -0.95 0 22.5 vertex -0.95 6.11494 21.5472 vertex 0.95 6.11494 21.5472 vertex -0.95 7.77656 6.96334 vertex -0.95 0 20.5 vertex -0.95 4.22131 20.5 vertex 1 6.3311 13.3597 vertex -1 0 22.0001 vertex -1.11698 -5.25446 22.0001 vertex -1.11698 -5.25446 22.0001 vertex -5.37835 0 22.0001 vertex 4.50529 2.92564 22.0001 vertex -2.98805 4.47193 22.0001 vertex -2.98805 4.47193 22.0001 vertex -4.47193 2.98805 22.0001 vertex -3.74837 -3.84796 22.0001 vertex -1.04926 5.27501 22.0001 vertex -1.11698 5.25446.

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