MoodeAudioBuild

Just a build report, may help or give idea to other people. Using a Raspberry Pi 2b+ (512mb ram) with MoodeAudio 6.7.1 on a 32GB MicroSD + AudioPhonics DAC ES9023 V1. http://moodeaudio.org/

Case Hammond 1455T2202BK (220x165x51.5mm) black aluminium. Front and back are in plastic, much easier for working. I've used FrontPanel from Schaeffer to make the design.

Power supply :

• Toroidal transformer 2x115vac / 2x15vac 18VA (modified to 1x15vac / 1x8vac).
• 5vdc regulator with a LD1805 (2x2200uF) (BYV-100 Diode).

Power supply controler :

• Attiny 13A who control 2 relay.
  • First relay control de power to the rpi.
  • Second relay send a short contact to a GPIO witch is configure to shutdown the rpi.
  • 1 button (First push = Power ON / Second long push = Power OFF after 1 min).
• See Kicad schematic & Arduino Code (Using MicroCore https://github.com/MCUdude/MicroCore) & Usbasp for programming.

Display :

• Using a HD44780 compatible display 2x20.
• Drive by pydPiper https://github.com/dhrone/pydPiper.
• pydPiper is running outside of docker for performance (pi2 too slow).
  • Autostart in /etc/rc.local by adding the line (at the end of the file) sudo sh /home/pi/pydpiper.sh &
  • pydpiper.sh simply do :
    • cd /home/pi/pydPiper
    • sudo python pydPiper.py

Todo :

• Upgrade to MoodeAudio 7.x.
• Resolve GPIO bug.
• Print front panel to cover the screw.