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Back{ union() { z_position = height * rotate_vector_cos, rotate_vector_sin * height], // top horizontal rib // bottom horizontal rib // h_wall(h=1.6, l=right_rib_x); // bottom horizontal rib // h_wall(h=1.6, l=right_rib_x); // bottom horizontal rib // h_wall(h=1.6, l=right_rib_x); // one more to mount the circuit board to, dead center // one more 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 clone (atmega 328p), 12-bit dac (mcp4726) and small amounts of supporting hardware Microcontroller and smoothed PWM https://kassu2000.blogspot.com/2019/10/quantizer.html using a gate. Main synth_tools/Schematics/SynthMages.pretty/6.3mm_NPTH_MAXJLCPCB.kicad_mod 24 lines Binary files /dev/null and b/Futura Heavy BT.ttf rename to Panels/Futura Heavy BT.ttf | Bin 0 -> 167187 bytes Images/PXL_20210831_002553634.jpg | Bin 0 -> 69774 bytes Images/precadsr-panel-art.png | Bin 0 -> 47687 bytes Hardware/PCB/precadsr/precadsr.pro | 258 Hardware/PCB/precadsr/precadsr.xml | 1557 Hardware/PCB/precadsr/sym-lib-table | 1 | B10k | Potentiometer | | J2 | 1 | Conn_01x04 | Pin socket, 2.54 mm, 1x4 Pin header, 2.54 mm, 1x7 Pin socket, 2.54 mm, 1x4 Light emitting diode, 5 mm Small Signal NPN Transistor, TO-92"/>