Cheap UHF spectrum analyzer (and RC tx rx) using RFM22 module

Dfidalgo:
The joystick will be a old but cool "Top Gun" , and a pair of old T2m rudder pedals, all for FPV obviously.

Wow that is pretty cool, and yes LM7805 will work fine, that's what I use. The board draws very little power.

Also I thought I should update the schematics and bill of materials, there are some slight changes. See attached.

BOM_Rev2.pdf (31.5 KB)

Schematics V3.3.pdf (74.6 KB)