I have G0ORX's Raspberry Pi PiHpsdr running on my Rpi 2B. I have a 600 ppr rotary encoder, and 2 24 ppr rotary encoders connected to the RPi GPIO port. RPiHpsdr is designed to control the OpenHpSDR hermes, Angelia, and Orion SDR, available from Apache Labs as ANAN-10, ANAN-100, ANAN100B, and ANAN200D.
You can use PiHpSDR to control the above Apache Labs radios using only a mouse, rotary encoders not required. Keyboard, mouse, Display and Ethernet connection required. WiFi may be problematic, YMMV.
The RPiHpSDR code and installation instructions also supports a 5" LCD display directly from the RPi, but this appears to be a work in progress at present. The RPi HDMI port works fine with my HDMI monitor when running RPiHPSDR.
Complete PiHpSDR software installation instructions are available at
https://github.com/g0orx/pihpsdr/blob/master/release/documentation/pihpsdr-install.pdf .
The software installation is somewhat tedious and requires you to use the RPi terminal window to enter multiple linux commands. There is NO automated installer!
Note: This is BETA software and no user documentation or help file is available.
Note: The Raspbian version that comes with NOOBS will NOT work with PiHPSDR. You MUST install the regular Rasbian version. I found out the hard way.
Bill KC9XG