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// text(string, size, halign=halign, font=font_for_title); //} // draw a "vertical" wall to mount the circuit board to, dead center // 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 Lattice caBGA-756, ECP5 FPGAs, 27.0x27.0mm, 756 Ball, 32x32 Layout, 0.8mm Pitch, https://www.ti.com/lit/ml/mpbg777/mpbg777.pdf BGA 289 0.8 ZAV S-PBGA-N289 Texas Instruments, RWH0032A, 8x8x0.9mm (http://www.ti.com/lit/ds/snosd10c/snosd10c.pdf DFN, 10 Pin (https://www.johansontechnology.com/datasheets/0900FM15K0039/0900FM15K0039.pdf), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 3 times outer diameter, generated with kicad-footprint-generator Inductor SMD 2010 (5025 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: http://datasheet.octopart.com/HVC0603T5004FET-Ohmite-datasheet-26699797.pdf), generated with kicad-footprint-generator Wuerth WR-WTB series connector, B06B-ZESK-D (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP, 28 Pin (http://ww1.microchip.com/downloads/en/DeviceDoc/8008S.pdf#page=16), generated with kicad-footprint-generator JST ZE series connector, LY20-8P-DLT1, 4 Circuits (http://www.jae.com/z-en/pdf_download_exec.cfm?param=SJ103130.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 16 Pin (https://www.stcmicro.com/datasheet/STC15F2K60S2-en.pdf#page=156), generated with kicad-footprint-generator ipc_gullwing_generator.py MSOP, 8 Pin (http://www.ti.com/lit/ds/symlink/lm5017.pdf#page=31), generated with kicad-footprint-generator.

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