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How to connect Arduino to mfrc522 module?
* * When the Arduino and the MFRC522 module are connected (see the pin layout below), load this sketch into Arduino IDE * then verify/compile and upload it. To see the output: use Tools, Serial Monitor of the IDE (hit Ctrl+Shft+M).
Where to find the unknown in mfrc522.cpp?
The unknown is output by line 1302 of MFRC522.cpp: So, your hardware (i.e. the reader) may not be supported. The only thing I can suggest is try another reader. Also, read the README, there maybe some thing there, or contact the author and/or raise an issue to see if you can get support for your version of the firmware ( 0x1C) added.
Why is the red LED on my rc522 not working?
It is not reading card and red led on RC522 is consistently on. Stack Exchange Network Stack Exchange network consists of 177 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Visit Stack Exchange Loading… 0 +0
Why is my addicore RFID not working properly?
Select the “Addicore_RFID_Example” sketch and upload the sketch This issue is due to incorrect wiring or loose contacts to RFID sensor. You need to solder contact to get results.
How can I see the output of my RFID reader?
To see the output: use Tools, Serial Monitor of the IDE (hit Ctrl+Shft+M). When * you present a PICC (that is: a RFID Tag or Card) at reading distance of the MFRC522 Reader/PCD, the serial output * will show the ID/UID, type and any data blocks it can read.
Can a PICC be read from a PCD?
When * you present a PICC (that is: a RFID Tag or Card) at reading distance of the MFRC522 Reader/PCD, the serial output * will show the ID/UID, type and any data blocks it can read.
Why is my Arduino reader not reading PICCs?
Note: you may see “Timeout in communication” messages * when removing the PICC from reading distance too early. * * If your reader supports it, this sketch/program will read all the PICCs presented (that is: multiple tag reading).
How does a RFID tag work on an Arduino?
When * you present a PICC (that is: a RFID Tag or Card) at reading distance of the MFRC522 Reader/PCD, the serial output * will show the ID/UID, type and any data blocks it can read. Note: you may see “Timeout in communication” messages * when removing the PICC from reading distance too early.