As you design your [our? ;) ] case, keep heat in mind. The Pi puts out a lot, plus the SDR's get warm too. Package them closely together and/or add the AHRS chip and it'll need good ventilation. Put it on the dash and it may need a fan. I'd like to add a buck converter so I can power it directly from a 12 or 24 volt plug, but that'll add more space requirements and wiring. With additional code and wiring, the fan can be controlled by the Pi itself. Now let's add a small rechargable internal battery that powers the Pi long enough for logic to automatically issue a shutdown command when the main power is cut (to avoid accidental file corruption). All this is possible, practical, and pretty much necessary to make the Stratux a true plug in/unplug device like the high dollar commercial products.
As a poor man's ADS-B, the developers truly deserve an award. I've built and flown with two - a dual receiver with GPS/AHRS chip, and a barebones single receiver. They both work as well as my SkyRadar DX.
If you want to SSH into the Pi from an Android, JuiceSSH is a good free app. RasPi Check is a free app that tells you how the PI is performing (temp, speed, memory usage, etc.) and also gives you a quick way to send a shutdown or reboot command to the Pi.