pi4+waveshare_ups+hifiberry_dac/dsp

here's a case for a ups-ed multimedia system based on raspberry pi 4 (I use osmc/kodi). requires no screws (I keep it together with rubber bands that serve as legs). just stack the pieces together and slide them in. it has ducts and a hole for a 40mm fan, i use 12v fan powered by 5v directly from the board which keeps it nearly silent.