Attention - WIP

Key functions already working:

• Start-up intro
• Play / Pause / Stop events properly handled
• Font changed to Cyrillic
• Screen offeset (30 px) and scrolling work properly

Interim measures:

• Pushbuttons (Shutdown / Play-Pause / Prev / Next) working via Volumio GPIO Plugin

To-do:

• Screen blanking for standby longer than 2 min
• Handling of Shutdown event on screen
• Clean-up code
• Remove unused files (fonts, modules)
• Does anybody know how to erase symbols from aluminium faceplate without damaging the lacquered surface :-) ?

Description

Volumio UI for retrofit attempt of Yamaha PianoCraft DVD-E600 with RPi, Volumio 2, DAC, buttons and PSU.

Hardware

• Yamaha PianoCraft DVD-E600, stripped of internals
• PSU Meanwell RS-15-5 5V 3A 15W
• Raspberry Pi 2B/3B with Volumio2 image
• RPi DAC Burr-Brown PCM 5122 with GPIO pins
• 2.8" 256x64 Pixels 4-wire SPI OLED Display with SSD1322 controller IC
• 6 pushbuttons, pull-up resistors, breadboard, wires, pins, glue, dremel, crimping tool, soldering iron

Critical Success Factors

• coffee
• cat
• use 3.3V power for OLED
• check TWO TIMES wiring (at least the power line) for OLED screen

Constraints

• make use of 6 push-buttons on front panel.
• the visible area of OLED screen is wider than window in a front glass. First 30 pixels will remain concealed.
• ttf font must support Cyrillic script

Approach

• Develop screen UI
• Hook-up functions on push-buttons:
  • Play / Pause
  • Stop
  • Prev
  • Next
  • Clear playlist (Eject button)
  • Power off
• Play Yello

Dependencies

• socketIO-client
• PIL
• luma.oled

Install

get ssh access to Volumio, login and enable SPI bus by adding

dtparam=spi=on

to /boot/userconfig.txt via

sudo nano /boot/userconfig.txt

and reconfigute timezone

sudo dpkg-reconfigure tzdata

installation steps

sudo apt-get update
sudo apt-get install -y python-dev python-pip libfreetype6-dev libjpeg-dev build-essential python-rpi.gpio
sudo pip install --upgrade pip wheel
sudo pip install --upgrade setuptools
sudo pip install --upgrade socketIO-client luma.core==1.8.3 luma.oled==3.1.0
git clone https://github.com/isoniks/pianoui.git
chmod +x ~/pianoui/piui.py

test run

python pianoui/piui.py

run as daemon

sudo cp ~/pianoui/piui.service /lib/systemd/system/
sudo systemctl daemon-reload
sudo systemctl enable piui.service
reboot

how to check the logs

sudo journalctl -fu piui.service

Credits & Kudos

Thanks to following folks for their great projects:

• diehardsk
• Maschine2501