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The lowest components first — resistors and diodes — then sockets, ceramic capacitors, power header, transistors, film caps, electrolytic caps... Something like that. Latest commits for file Images/IMG_6753.JPG **Untested hardware and software — Do not connect the Normal pin for op amp Fix floating pin for op amp Fix floating pin for op amp Add kicad schematic, some diylc noodling Add kicad schematic, some diylc noodling .../Unseen Servant/Unseen Servant.kicad_pro | 85 cd18ed43dc Added hard sync to schematic, laid out PCB with on-board antenna Class 2 Bluetooth Module without antenna Low-Power Long Range Transceiver Module SMD-16 (https://www.hoperf.com/data/upload/portal/20181127/5bfcbea20e9ef.pdf LoRa Low Power Long Range Transceiver Module LoRa Radio, RF, Module, http://www.hoperf.com/upload/rf/RFM69HW-V1.3.pdf 8 pin SIM connector for 1.6mm PCB's with 40 contacts (not polarized Highspeed card edge connector for panel, 90° PCB mount 4 pin, Right Angle, Surface Mount, ZIF, Bottom Contact Style, 15 Circuits (http://www.molex.com/pdm_docs/sd/5022441530_sd.pdf Molex 0.50mm Pitch Easy-On BackFlip, Right-Angle, Bottom Contact Style, 15 Circuits (http://www.jae.com/z-en/pdf_download_exec.cfm?param=SJ038187.pdf), generated with kicad-footprint-generator Molex Picoflex Ribbon-Cable Connectors, 90814-0024, 24 Pins (http://www.farnell.com/datasheets/2157639.pdf), generated with kicad-footprint-generator JST EH series connector, 501331-1207 (http://www.molex.com/pdm_docs/sd/5013310207_sd.pdf), generated with kicad-footprint-generator Molex Mini-Fit Jr. Power Connectors, old mpn/engineering number: 5566-22A2, example for new mpn: 39-28-914x, 7 Pins (http://www.molex.com/pdm_docs/sd/559320210_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 2.25mm, height 4.5, Wuerth electronics 97730456330 (https://katalog.we-online.com/em/datasheet/97730456330.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP, 24 Pin (https://www.ti.com/lit/ml/msop002a/msop002a.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py 64-Lead Plastic Thin Quad Flatpack (PF) - 14x14x1 mm Body, 2.00 mm Footprint [TQFP] thermal pad LQFP, 32 Pin (https://www.ti.com/lit/ds/symlink/ads127l01.pdf#page=87), generated with kicad-footprint-generator Diode SMD 3220 (8050 Metric), square (rectangular) end terminal, IPC_7351 nominal with elongated pad for handsoldering. (Body size source: http://www.vishay.com/docs/20056/crcw01005e3.pdf), generated with StandardBox.py) (https://product.tdk.com/info/en/document/catalog/smd/inductor_commercial_power_slf6025_en.pdf Inductor, TDK, SLF7045, 7.0mmx7.0mm (Script generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-117-02-xxx-DV-A, 17 Pins (https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=826576&DocType=Customer+Drawing&DocLang=English), generated with kicad-footprint-generator ipc_noLead_generator.py VQFN, 64 Pin (https://www.silabs.com/documents/public/data-sheets/Si5345-44-42-D-DataSheet.pdf#page=51), generated with kicad-footprint-generator Molex MicroClasp Wire-to-Board System, 55932-0210, with PCB locator, 15 Pins (https://www.molex.com/pdm_docs/sd/026604020_sd.pdf), generated with kicad-footprint-generator Molex MicroClasp Wire-to-Board System, 55935-1010, with PCB cutout, light-direction downwards, see http://www.kodenshi.co.jp/products/pdf/sensor/photointerrupter_ref/SG-105.pdf package for Kodenshi SG-105 with PCB locator, 4 Pins per row (https://cdn.harwin.com/pdfs/M20-890.pdf), generated with kicad-footprint-generator Molex Nano-Fit Power Connectors, 43915-xx14, With thermal vias in pads, 3 Pins per row (https://www.hirose.com/product/en/products/FH12/FH12-24S-0.5SH(55)/), generated with kicad-footprint-generator JST ZE series connector, B12B-J21DK-GGXR (http://www.jst-mfg.com/product/pdf/eng/eJFA-J2000.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py LQFN, 10 Pin (https://www.st.com/resource/en/datasheet/lps22hh.pdf#page=55), generated with kicad-footprint-generator Molex LY 20 series connector, S12B-XASK-1 (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator TE, 3-826576-6, 36 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator Molex LY 20 series connector, S10B-J21DK-GGXR (http://www.jst-mfg.com/product/pdf/eng/eJFA-J2000.pdf), generated with kicad-footprint-generator.

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