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Bauanleitung - How to Build an ADS-Berry Pi

Parts List

  • Raspberry Pi B, B+ (versions 2 and 3 do work, but are known to instability in our setup because of higher power usage)
  • (Micro) SD memory Card with at least 4GB
  • Buck Boost Converter
  • Passive PoE Splitter
  • 30cm USB extension
  • Micro USB cord
  • rtl-sdr DVB-T dongle with 820T or 820T2 Tuner. Nowerdays it is likely that you get a Fitipower tuner, that ist unfortunately not working for ADS-B
  • A Case which is Water Proof
  • MCX -> SMA adapter (Only if your sdr dongle is outfitted with a mcx instead of a sma connector
  • 1090MHz Bandpassfilter
  • M16 wire grommit
  • RJ45 grommit
  • Antenna for 1090MHz check our antenna guide
  • Shrinktube
  • Construction adhesive
  • 24V Passive PoE power supply

Tools

  • Drill for the big holes for the grommits
  • Soldering iron + solder
  • Pliers
  • Wirecutter
  • PH2 Screwdriver or long Bit
  • Multimeter
  • small - screwdriver

Prepare the box

  • Open the box and drill two holes in in one of the small sides, witch enough space around to install both grommits
  • This side will be our bottom
  • Install the grommits

Prepare the power

  • Cut the barrel connector of the PoE splitter and expose the two wires of the splitter
  • Solder the positive one (usually red) to the positive input terminal (+) of the Buck/Boost converter
  • Solder the negative one (usually black) to the negative input terminal (-) of the convrter
  • Connect the 24V PoE power source via an ethernet cable to the splitter
  • Measure the output voltage of the converter with the multimeter set to DC Voltage
  • Turn the potentiometer on the converter with a small slotted screwdriver until output ist 5V
  • Disconnect the power source
  • Cut the micro USB cord to leave about 20cm on the micro connectors side and expose the four wires.
  • Cut the data lines D+ and D- usually green and white
  • Solder the positive (usually red) and negative (usually black) wires to the positive (+) and negative (-) output terminals of the converter

Put it all in the box

  • Put raspberry in the box
  • Connect micro USB for Regualator with 5V in of the Pi
  • Connect input of PoE splitter to RJ45 Grommit from the inside
  • Connect RJ45 output of the splitter to the Pi
  • Connect the rtl-sdr dongle via the usb extension cable to the Pi
  • Connect the bandpassfilter via the MCX adapter to the rtl-sdr dongle
  • Feed the SMA to N cable with the SMA connector from the outside into the cable grommit in the bottom of the case and connect it to the output of the bandpassfilter
  • Tighten up the grommit
  • If you like you can secure the parts inside with a bit of construction adhesive but leave enough room to access the memory card slot anytime

Close the box

  • If you inserted your prepared memory card you can secure the boxes lid with the four screws and mount it on a place with clear line of sight for the antenna.
  • You can feed data and power via a good quality RJ45 cat6e cable from up to 30m
  • Connect the box to the passive PoE output of your injector or switch and connect the injector to your network

Build the antenna

Next steps