RFID Reader Special

Special RFID reader connections

This document is for those who use a non-USB reader. The readers which were discussed in the forums are:

• RFIO-RC522
• RC522
• RDM6300
• Many of the discussions are based on @keinkurt 's work

Because the "one py script fits all" resulted in many USB devices NOT to work anymore, I got careful.

If you are using a non-USB card, you need to use the experimental version of scripts/Reader.py which is called scripts/Reader.py.experimental.

cp /home/pi/RPi-Jukebox-RFID/scripts/Reader.py.experimental /home/pi/RPi-Jukebox-RFID/scripts/Reader.py

NOTE: if you git pull this file will be overwritten. You need to execute the above lines after git pull.

After you copied the Reader.py.experimental over Reader.py you have to manually register your Non-USB device:

python ~/RPi-Jukebox-RFID/scripts/RegisterDevice.py

Because you are using a non USB reader and know how to use a soldering iron, I will keep this doc raw for the time being. Feel free to edit the wiki and add more information.

CPU utilization. Fixes #275. (2018-11-25)

Based on @keinkurt 's integration work and @varac 's comment on the issue the pi-rc522 library was integrated. Docs on prerequisites and hardware setup for this are found here: https://github.com/ondryaso/pi-rc522 The problem with MFRC522 is that it will constantly poll for new cards in an infinite loop and therefore leaving little CPU time to the actual playback. On a Pi zero and using the already resource-intensive mopidy-spotify extension this was a showstopper for me. Using pi-rc522 the CPU load of daemon-rfid-reader.py was decreased to < 5%. Pi-rc522 uses an extra IRQ pin to make the process block until a new card is actually found.