Why isn't my ESP8266 RFID Reader Providing Expected Output on the Serial Monitor?
"Hey team, I've successfully uploaded the RFID reader code to my ESP8266, and the hardware connections seem correct. However, I'm not getting the expected output on the Serial Monitor. The loop is running, but I'm not detecting RFID tags or seeing UID information. Any insights on what might be causing this issue would be greatly appreciated!"
14 Replies
Hi, @K.L.NAGARAJU I appreciate it if you let us know which Exact RFID Module (part number) you're using in your project. And, are you just testing demo example code from the RFID Library? Once you confirm the part number I hope I can help you further. Welcome to DevHead!
@Umesh Lokhande
It's RC522 (RFID model) and I'm trying to build a kind of system that could READ and display UDI information of a RFID CARD on a serial monitor of ARDUINO IDE
The Response I found
Hi @K.L.NAGARAJU Please confirm in your Serial Monitor Windows at the lower right corner if you've set the correct baud rate. It seems to me, that the baud rate in the code does not match with the serial terminal "9600". Please confirm
The Response I found
Yeah, I had set the baud rate at 9600 in both code and serial monitor
@Umesh Lokhande
@K.L.NAGARAJU So, you mean even after setting the baud rate properly? still doesn't work. Please share good quality pictures I mean proper screenshots. Also, appreciate more details on the RFID tags (card/key). Thanks!
Sure
@K.L.NAGARAJU In the picture, you shared it seems like the code has not yet been uploaded in your ESP8266. Because, in the other picture you shared it shows when you upload the code the COM7 not available (orange fonts in the output console of IDE). If the code upload succeeded then how come the serial monitor COM6 reading the serial terminal? So this means the code running on ESP8266 is older. I hope this may help you to debug the issue. Thanks!
@K.L.NAGARAJU Just for your reference, please find these attached images and compare them. I'm sure if the earlier code worked and the connections are correct then it will work. Keep me updated on your progress. Best wishes!
@Umesh Lokhande
Sorry for the inconvenience,
I take the pics at different timings, that's why COM differences take place!
Here is the present situation
