Review on 🔑 Enhanced SunFounder RFID Kit - Mifare RC522 RFID Reader Module with S50 White Card and Key Ring, Ideal for Arduino and Raspberry Pi Projects by Ben Demers

This product is surprisingly compatible with Raspberry Pi. I had some starting problems but I got over them. The pins to and from the rpi are as follows: VCC - pin 1, 3.3 volt RST - pin 22, GPIO25GND - pins 6, 9, 14, 20 or 25, personally I have pin 6MISO - pin 21, GPIO9MOSI - pin 19 used, GPIO10SCK- pin 23, GPIO11NSS- pin 24, GPIO7IRQ- Don't Attach to rpi I used: http://bsd.ee/hadara/blog/?p=1017&cpage=1#comment-845 and it was extremely helpful. Hope this helps others: I'm giving this a 3.5 mainly due to the lack of documentation for both Arduinos, although the link to box.com is in the description it's not exactly helpful. Not to mention the NO info for Rpi.