homekit/doc/arecord_opi_lite.md

In order to use microphone on Orange Pi Lite:

• enable audio codec in armbian-config
• put this to /etc/rc.local (and make it executable):

  for v in unmute cap; do
      /usr/bin/amixer set "Line In" $v
      /usr/bin/amixer set "Mic1" $v
  done
  
  for k in "Mic1 Boost" "Line In" "Mic1"; do
      /usr/bin/amixer set "$k" "86%"
  done