I tested this with the M5Go. I just ran the Arduino example program. It easily identified both UID RFID cards I tried. One was a fob and the other a card (see picture). I think both a sample UID card and a PICC card should have been included Banggood sells a non-M5Stack version for about half the price that includes a sample card and fob (they are probably UID).. It's nice that this unit runs on I2C because with an I2C expander, your I2C port doesn't need to be used up. Regardless, this unit works as advertised and interfaces well in the M5Stack environment.

I tested this with the M5Go. I just ran the Arduino example program. It easily identified both UID RFID cards I tried. One was a fob and the other a card (see picture). I think both a sample UID card and a PICC card should have been included Banggood sells a non-M5Stack version for about half the price that includes a sample card and fob (they are probably UID).. It's nice that this unit runs on I2C because with an I2C expander, your I2C port doesn't need to be used up. Regardless, this unit works as advertised and interfaces well in the M5Stack environment.

I tested this with the M5Go. I just ran the Arduino example program. It easily identified both UID RFID cards I tried. One was a fob and the other a card (see picture). I think both a sample UID card and a PICC card should have been included Banggood sells a non-M5Stack version for about half the price that includes a sample card and fob (they are probably UID).. It's nice that this unit runs on I2C because with an I2C expander, your I2C port doesn't need to be used up. Regardless, this unit works as advertised and interfaces well in the M5Stack environment.

good

good

good