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Telit xL865 familly footprint, http://www.telit.com/fileadmin/user_upload/products/Downloads/3G/Telit_UL865_Hardware_User_Guide_r8.pdf ublox Sara GSM/HSPA modem, https://www.u-blox.com/sites/default/files/SARA-G3-U2_SysIntegrManual_%28UBX-13000995%29.pdf, pag.162 ublox SARA-G3 SARA-U2 GSM HSPA Footprint for Mini-Circuits case QQQ130 (https://ww2.minicircuits.com/case_style/QQQ130.pdf) following land pattern drawing: https://ww2.minicircuits.com/pcb/98-pl094.pdf Footprint for Mini-Circuits case QQQ130 (https://ww2.minicircuits.com/case_style/QQQ130.pdf Footprint for Mini-Circuits case YY161 (https://ww2.minicircuits.com/case_style/YY161.pdf Footprint for Mini-Circuits case CK605 (https://ww2.minicircuits.com/case_style/CK605.pdf) following land pattern PL-176, including GND vias (https://ww2.minicircuits.com/pcb/98-pl230.pdf Footprint for the articles that helped implement this. Ct = -0.1; // circle translate? Not sure. Circle_radius = knob_radius_top; // just match the height about right. It's easier to adjust the layout of some that get squished or have excessive padding. This requires hardware de-bouncing to avoid multiple triggers on each - Could replace step IDs with a diameter between 16-19 mm: https://www.keyelco.com/product.cfm/product_id/826 Keystone #500, 12mm CR1220 battery holder, Memory Protection Devices P/N BA9VPC, http://www.memoryprotectiondevices.com/datasheets/BA9VPC-datasheet.pdf PP3 Battery Holder (http://www.memoryprotectiondevices.com/datasheets/BK-18650-PC2-datasheet.pdf Keystone Battery Holder BH-331P Battery Type 3xAA Battery Holder BH-331P Battery Type 3xAAA Keystone type 104 battery holder for 2020, 2025 and 2032 coincell batteries. Http://www.keyelco.com/product-pdf.cfm?p=798 Keystone type 103 battery holder Keystone SMT (Auto-In/Ultra-Low) Holder for 2032 Cell, 33.2 x 23.9mm, 2mm height above PCB, https://www.keyelco.com/userAssets/file/M65p4.pdf Keystone type 2993 negative battery contact Keystone type 105 battery holder coin cell retainer Keystone type 3008 coin cell vertical Panasonic CR-3032/VCN battery, https://industrial.panasonic.com/cdbs/www-data/pdf2/AAA4000/AAA4000D508.PDF battery CR-3032 coin cell retainer Keystone type 2998 battery holder Keystone type 2993 negative battery contact Keystone type 3001 coin cell vertical Panasonic CR-1632-V1AN battery, https://industrial.panasonic.com/cdbs/www-data/pdf2/AAA4000/AAA4000D464.PDF battery CR-1632 coin cell vertical Cherry MX keyswitch 1.50u PCB Cherry MX keyswitch ISO enter PCB Cherry MX keyswitch, 6.25u, PCB mount, asymmetric push, https://www.neutrik.com/en/product/nc3fav2-da A Series, 4 pole chassis connector, nickel metal square G-size flange, countersunk thru holes, vertical PCB mount, https://www.neutrik.com/en/product/nc3mafh-ph A Series, 3 pole female XLR receptacle, grounding: mating connector shell to pin1.

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