searchwing-antenna-ground-box [Digitale Elektronik und Technische Informatik]

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===== Antenna ground box =====

The antenna ground box provides access to the antenna on the vessel from a laptop or tablet running QGroundControl. The station is composed of

  * [[https://www.taoglas.com/product/barracuda-omb-868-05f21-868mhz-omni-directional-outdoor-antenna|Taoglas Barracuda OMB.868.B05F21 868MHz 5dBi Omnidirectional Outdoor Antenna]]
  * [[https://www.pololu.com/product/2851|Pololu D24V50F5 5V DC/DC converter]] to provide power from 24V power input
  * [[https://www.pusr.com/products/serial-to-ethernet-converter-modules-usr-tcp232-t2.html| USR-TCP232-T2 - UART to Ethernet Converter]]
  * [[https://www.gl-inet.com/products/gl-ar750/|GL-AR750]] access point to access mavlink via Wifi
  * The [[searchwing-rf-antenne|RFD868+ Modem]]
  * The Datasheet of the {{ ::ds_mpe_095.pdf |Angled Header}} available at [[https://www.reichelt.de/buchsenleisten-2-54-mm-2x10-gewinkelt-mpe-095-2-020-p119921.html?&nbc=1|Reichelt]].

In addition it is possible to connect via the [[https://www.ftdichip.com/Support/Documents/DataSheets/Cables/DS_TTL-232R_CABLES.pdf|FTDI UART/USB]] cable with and without power from the 24V system. The router can also be connected with an ethernet cable to have wired access to the telemetry data.

[[searchwing-antenna-ground-box#antenna_box_v2|Current Version V2]]

==== Antenna Box V1 ====

{{ ::basestationplatine.png?600 |}}

All electronic components are in the Spelsberg box.

{{::sw-ags-spelzberg.jpg|Antenna Ground Station - Board and Accesspoint}}

=== Connections ===

  * 24V power supply from Ship (max. 3A / 6V-38V InputRange)
  * Antenna cable with N connector for the Taoglas antenna
  * Ethernet cable for wired access
  * FTDI UART/USB cable for direct wired access

=== Jumpers ===

  * Power Switch: Use Power from D24V50F5 DC/DC Converter (Jumper Left) or the USB Power via FTDI Cable (Jumper Right) 
  * Data Switch: Route the Telemetry RADIO TX/RX to Ethernet (Jumpers Left) or to the FTDI Cable (Jumpers Right)

=== Mechanical ===

The electronics is in a Spelsberg box with 300x300x180mm and pole mounting.

  * [[https://www.spelsberg.de/industrieleergehaeuse/bis-40-x-50-cm-flexibel/70043301/|GEOS-L 3030-18-o Gehäuse]] mit
  * GEOS MSS-30 Masthalterung mit Schraubschellenset SRS 60-90 und SRS 90-150 und einer
  * GEOS-L EP-3030 Montageplatte mit (NOT USED)
  * GEOS MH-22 Halterset (WRONG!!! This is too long and probably useless)

=== Waveshare UART to Ethernet ===

  * User: SWing, Pass: SW018
  * IP: Alan Kurdi: 192.168.8.50, Sea-Eye 4: 192.168.8.2 
  * MAC: Alan Kurdi: 9C:A5:25:A0:48:B4, Sea-Eye 4: 9C:A5:25:A0:48:51

Configuration:

  * Baud Rate: 57600, 8 Databits, No Parity, 1 Stopbit
  * Local Port: 14550
  * Remote Port Number: 14550
  * Work Mode: UDP Client
  * Remote Server Addr: 192.168.8.255

=== Access Point ===

  * Type: GL-Inet AR750
  * SSID: SW-AntBox-5G (5 GHz), SW-AntBox-24G (2.4 GHz)
  * Wifi Password: GEHEIM
  * 5 GHz Channel 48, 2.4 GHz Channel 1
  * Router IP: 192.168.8.1
  * LAN as DHCP with UARTtoEth via MAC Binding to fixed address)
  * Admin Password: GEHEIM

The changes made from factory setting are:
  * Wifi SSID, Passwords
  * Bind MAC from UART2ETH WaveShare to IP (Kurdi: 192.168.8.50, Sea-Eye 4: 192.168.8.2)

==== Installation ====

The installation requires

  * 24 DC power supply cable
  * install of the Taoglas Antenna
  * install of the Spelzberg box
  * optional install of the Ethernet Cable for fixed wire access

{{::sw-antenna-kurdi.jpg?1024|Antenna Ground Box on Alan Kurdi}}

The image shows the installed SearchWing Antenna Box on the Alan Kurdi. The box contains a Wifi Access Point for a connection to the flight tablet computer. It is therefore recommended to operate the tablet in proximity to the box.

==== Antenna Box V2 ====

A new PCB board integrates the voltage regulator, RFD868+ modem, UART to Ethernet Converter on one board. Everything is now installed via "Hutschiene". This version was installed on the [[https://www.hs-augsburg.de/searchwing/de/seawatch-tests-2021/|mission with Sea-Watch 4 with Philipp]].

=== Electronics / Board ===

Franc and Tim designed a board for the antenna ground box.

{{ ::sw-ags-pcb-v2.jpg |Antenna Ground Station PCB v1.0 with Hutschienenadapter}}

**Fig. 4:** Antenna Ground Station PCB v1.0 with Hutschienenadapter

Figure 4 shows the antenna ground box PCB version 1.0. The design data is available at 

[[https://easyeda.com/SearchWing/antennagroundstation|Easyeda - Antenna Ground Station PCB Board]]

The pcb board is installed with Hutschiene inside the Spelsberg box.

{{ ::sw-ags-box-v2.jpg | Antenna Ground Station v2 with PCB and Hutschiene}}

**Fig. 5:** Antenna Ground Station v2 box with PCB and Hutschiene

Figure 5 shows the Antenna Ground Station box V2 with PCB and Wifi AP on Hutschiene.

{{ ::sw-ags-ap-hutschiene.jpg |}}

**Fig. 6:** Hutschienenadapter mit Sekundenkleber an Wifi AP geklebt

Figure 6 shows the Wifi Access Point glued with Sekundenkleber to the Hutschienenadapter.