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
chmod +x /home/pi/RPi-Jukebox-RFID/scripts/Reader.py.experimental

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

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.