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Main MK_VCO/Panels/luther_triangle_vco_quentin_v4.scad 303 lines default_label_font = "Futura Md BT:style=Medium"; label_font_size = 5; //mm center_col = width_mm/2; vertical_space = height - v_margin*2 - title_font_size; working_increment = working_height / (8+tolerance/3); // generally-useful spacing amount for vertical columns of stuff working_height = height - v_margin*2 - title_font_size; working_increment = working_height / (8+tolerance/3); // generally-useful spacing amount for vertical columns of stuff working_height = height * rotate_vector_cos; [left_edge, rotate_vector_cos * rail_depth], // top horizontal rib h_wall(h=1.6, l=right_rib_x); // 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 LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on http://www.latticesemi.com/view_document?document_id=213 BGA 0.8mm 9mm 121 BGA-132 11x17 12x18mm 1.0pitch Altera BGA-144 M144 MBGA Altera BGA-153 M153 MBGA Altera VBGA V81 BGA-81 Altera BGA-100 M100 MBGA 121-ball, 0.8mm BGA (based on http://www.latticesemi.com/view_document?document_id=213 BGA 0.8mm 9mm 121 BGA-132 11x17 12x18mm 1.0pitch Altera BGA-144 M144 MBGA Altera VBGA V81 BGA-81 Altera BGA-100 M100 MBGA 121-ball, 0.8mm BGA (based on http://www.latticesemi.com/view_document?document_id=213 Lattice caBGA-756, ECP5 FPGAs, based on http://www.latticesemi.com/view_document?document_id=213 BGA 0.8mm 9mm 121 BGA-132 11x17 12x18mm 1.0pitch Altera BGA-144 M144 MBGA Altera BGA-153 M153 MBGA Altera BGA-153 M153 MBGA Altera BGA-153 M153 MBGA Altera BGA-153 M153 MBGA Altera VBGA V81 BGA-81 Altera BGA-100 M100 MBGA 121-ball, 0.8mm BGA (based on standard DIP-4), row spacing 8.61 mm (338 mils), body size (see https://www.ctscorp.com/wp-content/uploads/194-195.pdf 3x-dip-switch SPST , Piano, row spacing 8.61 mm (338 mils), body size 6.7x19.34mm (see e.g. Https://www.ctscorp.com/wp-content/uploads/209-210.pdf), LowProfile 11x-dip-switch SPST , Piano, row spacing 10.16 mm (400 mils), LongPads THT DIP DIL PDIP 2.54mm 25.4mm 1000mil SMDSocket SmallPads 40-lead though-hole mounted DIP package, row spacing 8.61 mm (338 mils), body size 9.78x7.26mm (see e.g. Https://www.ctscorp.com/wp-content/uploads/219.pdf), SMD, LowProfile, JPin SMD 8x-dip-switch SPST , Slide, row spacing 6.73 mm (264 mils), body size (see http://www.kingtek.net.cn/pic/201601201446313350.pdf), JPin SMD 6x-dip-switch SPST KingTek_DSHP06TS, Slide, row spacing 7.62 mm (300 mils), Socket, LongPads 5-lead though-hole mounted DIP package, row spacing 7.62 mm (300 mils), LongPads THT DIP DIL PDIP SMDIP 2.54mm 9.53mm 375mil Clearance8mm 4-lead surface-mounted (SMD) DIP package, row spacing 7.62 mm (300 mils 22-lead though-hole mounted DIP package, row spacing 5.08 mm (200 mils), body size (see http://www.nidec-copal-electronics.com/e/catalog/switch/cvs.pdf SMD 4x-dip-switch SPST Omron_A6H-4101, Slide, row spacing.

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