This page describes the most convenient method for setting up a Flarmradar Ground Station. This is the component that reads out the flarm device and streams the data it to the Flarmradar Server.  

= Flarm Ground Station Construction Guide =

=== Before you start ===
While the ground station can be built in short time, consider that it takes a considerable amount of time for finding a good spot on the airfield. A direct line of sight to the entire runway and the open sky are optimal conditions to achieve a good result.  

'''Prerequisites:'''
  - a Flarm device, equipped with the latest Firmware (at least 5.09 from 2013/03/01) and a GPS receiver
  - a working internet connection from the place where ground station is installed

'''Components to buy:'''
  - a [http://www.raspberrypi.org Raspberry PI] Type B
  - the rs232 communication board for the Raspberry (the board can be ordered [http://www.abelectronics.co.uk/products/3/Raspberry-Pi/29/Serial-Pi-RS232-Interface here]) 
  - a power supply for 12V and 5V (e.g. [http://www.meanwell.com/search/ADD-55/ADD-55-spec.pdf Mean Well ADD-55A])
  - an external antenna for the flarm device
  - a box (minimal 30x30x15cm) to incorporate and connect all components
  - for the [attachment:communication_cable.jpg  communication cable] between Flarm, Raspberry and Powersupply:
    - a short RJ45 cable (will be cut in parts)
    - a 9-Pin Sub-D connector
    - a micro-usb connector cable (will be cut in parts)

=== Step-by-Step ===