Hello from Poland!

[jeeer]

I'd love to hear some details of the control interface.  Looks lush.

Well - nothing complicated but very time-consuming - everything is python-powered, as usual:

• at low level is managed by esp32 with esphome inside
  
• encoder for volume
  
• libreelec + samsung remote
  
• 5 tactile buttons:
  

1. call my favorite playlist
   
2. power ON/OFF
   
3. LCD on/off
   
4. + 5 volume + / - or jump to the next track (I haven't decided on 100% yet)
   

Hardware inside:

• HDMI - waveshare 4inch
  
• waveshare SPI OLED for name station and artist name
  
• aliexpress I2C OLED for volume
  
• DAC - hat
  
• 4 bridged D class for L, R, SUB (mono), Central (mono) central is necessary for me because I have a very wide stereo base and such a channel eliminates this
  
• 2 supply - one 5v for digital + DAC, 18v from old laptop for audio
  
• two low-speed fans blowing air from the bottom to the top.
  

The idea of such a design was to construct equipment in the smallest possible housing, but retaining the touch display and with physical buttons. The casing was supposed to fit between the books and I designed several dozen different casings for this purpose. The body is CNC cut from several plexiglass, with aluminum panels on the sides.
  

and that's all :-)