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| 65 Hardware/PCB/precadsr/precadsr.kicad_pro | 471 .../precadsr-panel-Gerbers/drill_report.rpt | 26 .../precadsr-panel-MaskBottom.gbs | 75 .../precadsr-panel-PasteBottom.gbp | 15 .../precadsr_aux_Gerbers/precadsr-B_SilkS.gbr | 1093 .../precadsr-Edge_Cuts.gbr | 16 Docs/precadsr_bom.md | 3 pin Molex header 2.54 mm spacing | | | | | Tayda | A-4755 | | | | | | | 1 | Conn_01x04 | Pin header, 2.54 mm, 1x2 (see [build notes](build.md)) | | R24, R26, R28 | 3 | 4.7k | Resistor | | Tayda | A-1531 or A-557 | | | | S3 | 1 | ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8"/> 100V 0.15A standard switching diode, DO-35 Quad operational amplifier, DIP-14 A-1135 2 8 pin connector, PD-30, http://www.cui.com/product/resource/pd-30.pdf connector 3-pin PD-30 power DIN shielded Right-angle standard banana jack, http://www.caltestelectronics.com/images/attachments/P315100rH_drawing.pdf DEUTSCH DT header 12 pin connector, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F215079%7FY1%7Fpdf%7FEnglish%7FENG_CD_215079_Y1.pdf%7F215079-4 connector TE-Connectivity Micro-MaTch Vertical 1-215079-4 8-215079-14 TE-Connectivity Micro-MaTch female-on-board top-entry thru-hole 20 pin connector, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F215079%7FY1%7Fpdf%7FEnglish%7FENG_CD_215079_Y1.pdf%7F215079-4 connector TE-Connectivity Micro-MaTch Vertical 215079-4 7-215079-4 TE-Connectivity Micro-MaTch female-on-board top-entry thru-hole 12 pin connector, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F215079%7FY1%7Fpdf%7FEnglish%7FENG_CD_215079_Y1.pdf%7F215079-4 connector TE-Connectivity Micro-MaTch Vertical 215079-4 7-215079-4 TE-Connectivity Micro-MaTch female-on-board top-entry thru-hole 6 pin 0.5mm Pitch (http://www.ti.com/lit/ds/symlink/lm4990.pdf WSON, 12 Pin (http://www.ti.com/lit/ml/mpqf391c/mpqf391c.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP, 24 Pin (https://pdfserv.maximintegrated.com/package_dwgs/21-0139.PDF), generated with kicad-footprint-generator ipc_noLead_generator.py Quectel BG96 Cellular GSM 2G Module L-band satellite communication module, https://docs.astrocast.com/dl/0532-DOC-M2M-ASTRO-Astronode_S-Datasheet.pdf RF module Astrocast radio Astronode 2.4 GHz Wi-Fi and Bluetooth combo chip https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32_datasheet_en.pdf Single 2.4 GHz Wi-Fi and Bluetooth module ESP32-D0WD Espressif.

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