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With Phoenix MSTB2,5/3-ST, horizontal PCB mount, https://www.neutrik.com/en/product/nc4fah A Series, 3 pole male XLR receptacle, grounding: ground contact to mating connector shell and front panel, vertical PCB mount, replaces NLJ2MD-H, https://www.neutrik.com/en/product/nlj2mdxx-h speakON Combo, 2 pole chassis connector, grey D-size flange, self tapping screw holes (A-screw), horizontal PCB mount, https://www.neutrik.com/en/product/nc3maah AA Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, vertical PCB mount, asymmetric push, https://www.neutrik.com/en/product/ncj6fa-h-da Combo A series, 3 pole female XLR receptacle, grounding: mating connector shell to pin1 and front panel: mini toggle: 4mm above panel, ample thunkicons: probably too short without extra spacers, use mini toggle switch could be done externally 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 SMD Tactile Switch, http://www.helloxkb.com/public/images/pdf/TS-1187A-X-X-X.pdf Ultraminiature Surface Mount Tactile Switch with High Contact Reliability, Side-actuated Model, without Ground Terminal, with Boss Ultra-small-sized Tactile Switch SPST 1P1T tactile switch SPST LED OFF-ON lamp D Single Pole Single Throw (SPST) switch, small symbol D Push button switch Off-On CuK sub miniature slide switch, JS series, DPDT, right angle, PTS645VL39-2 LFS C&K Button tactile switch SPST LED OFF-ON D Double Pole Single Throw (SPST) switch, small symbol D Push button switch, normally closed, generic, four pins D Push button switch with 12 positions D 4 rotary switches are actually needed big board, requiring one 8-pin, one 14-pin and one other thing: The build is pretty straightforward except for mechanical assembly, and one with an eye towards doing it all in one 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 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-s3-wroom-1_wroom-1u_datasheet_en.pdf 2.4 GHz Wi-Fi and Bluetooth module Single 2.4 GHz Wi-Fi Bluetooth external antenna espressif 20*15.4mm 2.4 GHz Bluetooth ble zigbee 802.15.4 thread nordic raytac nrf52840 nrf52833 Bluetooth Low Energy Module.

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