YEAH! It works - well at least the ADS-B receiver bit (waiting for parts for ARF board for Phase 2).
So I built it by just plugging together Raspberry Pi B+, 8GB SDRAM card, Wi-Fi dongle, RTL Dongle.
Also for debugging/config use, required an HMDI monitor/cable and a USB keyboard but no mouse, plus a power supply.
Lee provided a licence code by return.
It takes about 60 seconds to boot up from cold.
There were two separate config screens that I used. Attached are screenshots of both.
1) Web Config PageOn my iPad, after connecting to the Pilotaware hotspot, opening up the browser with 192.168.1.1 gave me the config screen to enter the licence code. The page has information, three buttons and three parameter boxes:
Information: Software build in brackets, followed by licence expiry date
Buttons are:
Home - refreshes the screen because there is only one page
Reboot - does a cold reboot
Save - I guess it sends the displayed parameters to the box
Parameters are:
Ident (Autogenerated)
QNH (mB) - Default is 1013 standard pressure setting
License - Enter the licence code emailed on request by Lee (request in the forum thread above)
Test
According to
this Forum post , you should enter your 6 digit ICAO Hex transponder code here. This can be found by looking it up on the CAA G-INFO website and is a six digit Hex code
For example: G-WIZZ is 402348
You can lookup any UK aircraft registration and the code is shown if it has Mode S
https://www.caa.co.uk/application.aspx?catid=60&pagetype=65&appid=1QNH defaults to 1013. This should be set to current QNH prior to each flight, and will change/convert the GPS altitude shown on SkyDemon to match pressure altitude (i.e. what your altimeter shows). This feature was added very recently as discussed in
this forum thread.
2) Collision Aware AppDownloaded from the Apple App Store.
The slider control to enable P3I only works when the iPad is connected to the box via WiFi.
There are three parameters:
a) ICAO Code: Superceded by the webpage Ident field above
b) Power: This is the RF peak transmit power measured in dBM, defaults to 27dBm = 500mW
See
http://www.cpcstech.com/dbm-to-watt-conversion-information.htmThis is the maximum power permitted in this unlicenced frequency in the UK
c) Region: Defaults to Europe and states the frequency used 868 point something (unfortunately the box is too narrow to show the full data field, but it does scroll when selected).
An UPDATE button at the bottom presumably saves any changed parameters.
Typically, users would not change any of these parameters
So instructions for setting the parameters would be
First time: a) Enter licence code on 192.168.1.1 and press reboot
Prior to each flighta) Enter QNH on 192.168.1.1 web page and press save
b) If flying different aircraft each time (e.g. in a club) then enter ICAO code on 192.168.1.1 and press save.
I don't think there should be any need to change Ident, RF power setting, Region or use the Test feature.
If you don't have a transponder or don't have a Mode S registration, just leave it as the default all zeros. Worst case, your own aircraft will show up on the screen as a continuous potential conflict.
I may be wrong about having to change the pressure setting prior to each flight, so would appreciate understanding that specific point.
Is the above correct?
