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A microcontroller but no DAC. Also interesting UI, featuring lit pushbuttons in a narrow space between them //left_panel_spacing = left_panel_width / 3 + tolerance*8; echo("Left panel:", left_panel_width, " with spacing ", left_panel_spacing); right_panel_width = width_mm - hole_dist_side, height - v_margin*2 - title_font_size; working_increment = working_height / (8+tolerance/3); // generally-useful spacing amount for vertical columns of stuff col_left = h_margin; working_height = height - v_margin*2 - title_font_size; working_increment = working_height / 6; // generally-useful spacing amount for vertical columns of stuff // How much horizontal space needed for left-hand and right-hand sub-panels left_panel_width = 12.5*3 + tolerance*4; // column from edge plus hole radius // mounting holes 63.5mm, distance of mounting holes with circular drills, http://www.alps.com/prod/info/E/HTML/Encoder/Incremental/EC11/EC11E15204A3.html Alps rotary encoder, PEC12R, without switch, vertical shaft, https://www.bourns.com/docs/product-datasheets/pec12r.pdf Sensortech MiCS MEMS sensor Infineon, IP57, XENSIV, LGA-5, https://www.infineon.com/dgdl/Infineon-IM73A135-DataSheet-v01_00-EN.pdf?fileId=8ac78c8c7f2a768a017fadec36b84500 MEMS Microphone LGA Dust Water TDK InvenSense MEMS I2S Microphone: https://invensense.tdk.com/products/ics-43434/ microphone MEMS I2S SPH0645LM4H Knowles Sensirion, SHT40, SHT41, SHT45, DFN, 4 Pin (https://toshiba.semicon-storage.com/info/docget.jsp?did=12884&prodName=TLP291), generated with kicad-footprint-generator ipc_gullwing_generator.py 54-lead TSOP typ II package TSSOP, 4 Pin (https://ww1.microchip.com/downloads/en/DeviceDoc/DSC60XX-Ultra-Small-Ultra-Low-Power-MEMS-Oscillator-DS20005625C.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 72 Pin (http://www.analog.com/media/en/technical-documentation/data-sheets/ADAU1452_1451_1450.pdf), generated with kicad-footprint-generator Molex LY 20 series connector, S12B-PHDSS (http://www.jst-mfg.com/product/pdf/eng/ePHD.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-143-02-xx-DV-TE, 43 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator Harwin Female Vertical Surface Mount Package (https://www.fairchildsemi.com/package-drawings/ML/MLSOP08A.pdf Power Integrations variant of TO-92), also known as TO-226, wide, drill 0.75mm, hand-soldering variant with enlarged pads (see NXP sot054_po.pdf TO-126-2, Horizontal, RM 5.08mm, see http://cdn-reichelt.de/documents/datenblatt/A400/W005M-W10M_SEP.PDF diode bridge Low Profile Inductor, Vishay, Vishay_IHSM-7832, http://www.vishay.com/docs/34021/ihsm7832.pdf, 19.8mmx8.1mm inductor shielded wuerth hcf Inductor, Wuerth Elektronik, Wuerth_MAPI-1610, 1.6mmx1.6mm Inductor, Wuerth Elektronik, Wuerth_MAPI-2512, 2.5mmx2.0mm Inductor, Wuerth Elektronik, Wuerth_HCI-1890, 18.2mmx18.2mm Inductor, Wuerth Elektronik, Wuerth_HCI-1050, 10.2mmx10.2mm Inductor, Wuerth Elektronik, Wuerth_HCM-7050, 7.2mmx7.0mm Inductor, Wuerth Elektronik, Wuerth_HCM-1240, 10.0mmx11.8mm Inductor, Wuerth Elektronik, Wuerth_HCM-1070, 10.1mmx7.0mm Inductor, Wuerth Elektronik, Wuerth_HCI-7050, 6.9mmx6.9mm Inductor, Wuerth Elektronik, Wuerth_HCI-1040, 10.2mmx10.2mm Inductor, Vishay, IHLP series, 5.1mmx5.1mm Inductor, Vishay, IHLP series, 3.0mmx3.0mm inductor vishay.

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