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Tweaking footprints some more, starting over at 14hp cd18ed43dc Added hard sync to schematic, laid out PCB with on-board antenna Bluetooth Dual-mode module with integral chip antenna (http://ww1.microchip.com/downloads/en/DeviceDoc/60001380C.pdf Cypress EZ-BLE PRoC Module (Bluetooth Smart) 21 Pin Module Digi XBee SMT RF ESP WROOM-02 espressif esp8266ex 2.4 GHz Wi-Fi and Bluetooth module ESP32-D0WD Espressif ESP32-WROOM-32E 2.4 GHz Wi-Fi and Bluetooth module ESP32-D0WD Espressif ESP32-WROOM-32E 2.4 GHz Wi-Fi and Bluetooth combo chip Single 2.4 GHz Wi-Fi and Bluetooth combo chip, external antenna, https://www.espressif.com/sites/default/files/documentation/esp32-s3-mini-1_mini-1u_datasheet_en.pdf 2.4 GHz Wi-Fi Bluetooth external antenna espressif 20*15.4mm 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 https://www.espressif.com/sites/default/files/documentation/esp32-s2-wroom_esp32-s2-wroom-i_datasheet_en.pdf 2.4 GHz Wi-Fi and Bluetooth module, https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf 2.4 GHz Wi-Fi https://www.espressif.com/sites/default/files/documentation/esp32-s2-wroom_esp32-s2-wroom-i_datasheet_en.pdf 2.4 GHz Wi-Fi Bluetooth external antenna espressif 15.4*15.4mm ESP32-S2-WROVER(-I) 2.4 GHz Wi-Fi and Bluetooth module ESP32-D0WD Espressif ESP32-WROOM-32E 2.4 GHz Wi-Fi Bluetooth external antenna espressif 20*15.4mm 2.4 GHz Wi-Fi Bluetooth external antenna espressif 20*15.4mm 2.4 GHz Wi-Fi Bluetooth external antenna espressif 15.4*15.4mm ESP32-S2-WROVER(-I) 2.4 GHz Wi-Fi and Bluetooth module ESP32-D0WD Espressif ESP32-WROOM-32E 2.4 GHz Wi-Fi and Bluetooth combo chip Single 2.4 GHz Wi-Fi and Bluetooth combo chip Single 2.4 GHz Wi-Fi and Bluetooth module, https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32e_esp32-wroom-32ue_datasheet_en.pdf NINA-B111 LGA module 42 Pin https://content.u-blox.com/sites/default/files/NINA-B1_DataSheet_UBX-15019243.pdf#page=30 NINA ublox u-blox b111 bluetooth nrf52840 module Omron Relay, DPST, https://omronfs.omron.com/en_US/ecb/products/pdf/en-g2rl.pdf Relay, SPDT Form C, Gull Wings, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Data+Sheet%7F108-98001%7FZ.1%7Fpdf%7FEnglish%7FENG_DS_108-98001_Z.1.pdf TE IM-Series Relay SPDT Relay DPDT Finder 40.51, Pitch 5mm/7.5mm, https://www.finder-relais.net/de/finder-relais-serie-40.pdf Relay DPDT Omron relay G6H-2, see http://cdn-reichelt.de/documents/datenblatt/C300/G6H%23OMR.pdf Omron G6K-2F relay package http://omronfs.omron.com/en_US/ecb/products/pdf/en-g6k.pdf Omron G6K-2G-Y relay package http://omronfs.omron.com/en_US/ecb/products/pdf/en-g6k.pdf Omron G6K-2G relay package http://omronfs.omron.com/en_US/ecb/products/pdf/en-g6k.pdf Relay Omron G6SK-2G, see http://omronfs.omron.com/en_US/ecb/products/pdf/en-g6s.pdf Relay Omron G6S-2, see http://omronfs.omron.com/en_US/ecb/products/pdf/en-g6s.pdf Relay Omron G6SK-2F, see http://omronfs.omron.com/en_US/ecb/products/pdf/en-g6s.pdf Relay Omron G5V-1, see http://omronfs.omron.com/en_US/ecb/products/pdf/en-g5v_1.pdf Relay SPDT Omron Serie G6EK, see http://www.logosfoundation.org/instrum_gwr/pi/Omron_G6E_134P.pdf Relay SPDT Omron Serie G6EK, see http://www.logosfoundation.org/instrum_gwr/pi/Omron_G6E_134P.pdf Relay SPDT Finder 40.11, https://www.finder-relais.net/de/finder-relais-serie-40.pdf Relay DPDT IM-relay FRT5 Kemet signal relay, DPDT, double coil latching surface mount PLCC, 84 pins, surface mount PLCC, 20 pins, dual row male, vertical entry, strain relief clip Harwin LTek Connector, 18 pins, single row Through hole angled socket strip, 1x30, 2.54mm pitch, DIN 41651 / IEC 60603-13, double rows, https://docs.google.com/spreadsheets/d/16SsEcesNF15N3Lb4niX7dcUr-NY5_MFPQhobNuNppn4/edit#gid=0 Through hole angled pin header THT 2x27 2.54mm double row Through hole angled pin header THT 2x33 1.27mm double row Through hole angled socket strip THT 2x04 1.00mm double row surface-mounted straight pin header, 2x38, 2.54mm pitch, 6mm pin length, single row style2 pin1 right Through hole straight.

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