EM-18 RF Reader: UID PROBLEM

Projects Programming
1

I have an EM-18 Reader Module and some RFID cards which have UID written on them in the following format:
0011386436
0011366459
0001270930
0011386333

I also have a USB RFID Reader which is reading UID exactly as I provided above. Now, I want to use the EM-18 with microcontroller like Arduino/ESP8266/ESP32. I've tried many codes and conversions, but no code is reading UID in my above required format. Can anyone help me with that?

2

What codes have you tried? What controller? Post your code and people can help.

This looks like a good tutorial: RFID Reader EM18 Guide with Arduino Interfacing | Sensors and Mod..

Since it is a 5V sensor, it would be good to go with a 5V microcontroller (not ESP).

3

image_2024-05-14_165409784
image_2024-05-14_1654097841108×831 48.3 KB

i wana read card number written on RF id tag
but all codes i try is reading uid in hex format as you can see on display
how can i convert hex to card number?
because hex to decimal method is not working

4

7640002 = 0x7493C2

I see those hex digits on your display, plus a couple more.... I have no idea what code you are running so can't help you any further. Is the trailing byte (0x5B) possibly a checksum?

Share your code

5

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