h4de5/volumio-nfc

Control Volumio.org using NFC

This is a collection of scripts to control a volumio based music player using a PN532 NFC reader. Idea from http://blog.zenona.com/ and http://tilman.de/projekte/audiosphere/.

See build log at https://0p.no/2017/12/19/volumio_nfc_build.html

Idea

• Use NFC stickers or cards.
• When scanned, the id of the sticker is matched with a list. If contained in list, queue is cleared and selected music starts playing.
• Additional buttons are required for i.e. play/pause, next, volume up.
• Any music source can be used.
• Format of music list: see readnfc.list

Setup

• Install Volumio on a Pi. Tested with version 2.323-2.344.
• i2c is already enabled.
• Connect NFC reader as advised, this script assumes i2c.
• Install requirements and a proper editor =) sudo apt install python3 python3-requests python3-gpiozero vim-nox
• Fetch https://github.com/HubCityLabs/py532lib
• Download this repo and run readnfc.py manually to test.
• To make it autostart, copy systemd service file readnfc.service to /etc/systemd/system/readnfc.service and enable: sudo cp readnfc.service /etc/systemd/system/
• Systemd timer to restart service soon after boot is needed for unknown reason. Also included. sudo cp restartnfc.* /etc/systemd/system/
• Reload and enable: sudo systemctl daemon-reload; sudo systemctl enable readnfc.service; sudo systemctl enable restartnfc.timer
• Add a script to add and play song to volumio: sudo cp addplay.js /volumio/app/plugins/system_controller/volumio_command_line_client/commands/
• Add a sound feedback file to music library, called: thankyouk.mp3 so the path will be mnt/INTERNAL/thankyouk.mp3.

Optional:

• Suggested plugins for this setup:

  • Spotify Connect https://volumio.org/forum/volumio-plugins-collection-t6251.html#p30706
  • GPIO buttons https://volumio.org/forum/volumio-plugins-collection-t6251.html#p30812

• Led.py and led.service for adding a status LED.

• Thank me.

• rotary.py is to use a rotary encoder for next, previous.

Debugging

For debugging the NFC reader, you can install libnfc5 and i2c-tools.

• Configure libnfc: sudo mkdir /etc/nfc; sudo vim /etc/nfc/libnfc.conf:

  device.name = "PN532 over I2C"
  device.connstring = "pn532_i2c:/dev/i2c-1"

• Test with sudo i2detect -y 1 and nfc-list to make sure NFC reader is connected.

Todo

• It would be very nice if all this could be turned into a proper volumio plugin.
• An easy way to store new tags?
• LED to notify when volumio is ready.
• LED to notify when volumio is broken (no wifi, shut down, etc)
• Better voice feedback.