RFID RC522 communication failure | Arduino Uno?
Hello,
So, I got an Arduino starter kit, and it included the RFID. I quickly soldered the pins and wanted to connect it today. I watched a few videos. I connected everything right away and did it. But it keeps saying the same thing and doesn't recognize the card. In any case, when I unplug the ground, it says something different. But in both cases, the module doesn't recognize the card.
I connected it as follows:
RST 9 SDA 10 MOSI 11 MISO 12 SCK 13 3V3 3V3 GND GNDwithout GROUND connected:
Firmware Version: 0x92 = v2.0 Scan PICC to see UID, SAK, type, and data blocks...normally connected:
Firmware Version: 0x0 = (unknown) WARNING: Communication failure, is the MFRC522 properly connected?Thanks in advance!
(1 votes)
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In most cases, instructions are included that outline what to look for during assembly, and you should follow them carefully. If you solder one point incorrectly, it could destroy the entire assembly.
You should also check to see if the pins are connected correctly according to the instructions (if available). An incorrectly controlled I/O pin can also cause problems. In this case, you simply need to adjust the functions of the assigned pins.
RFID also requires a test card for testing. You should also prepare one for such tasks.