HiLetgo RFID Kit - Mifare RC522 RF IC Card Sensor Module + S50 Blank Card + Key Ring for Arduino Raspberry Pi

i really like this product and the service I receive from HiLetgo. Oliva is always responsive to e-mails. I have used this both with a Raspberry Pi and an Arduino. at this time, I have chosen to connect it to a Arduino Nano, and read it through the serial port on the Raspberry Pi. This is a good setup because it leaves all of the GPIO pins on the Pi free to use with motor boards, sensors and etc. I would suggest that the supplied right-angle pins supplied with the board be used, as this makes access to them easier after mounting to a project. Tutorials for this are abundant online for the rfid-rc522. these will direct you in connection, and also will point you in the direction of libraries for both the Arduino and Raspberry Pi. I have purchased several items from HiLetgo, and have always found them to be of highest quality manufacture and reasonable pricing.

Once I got the driver mfrc522.py and some sample code this worked right out of the box. While the board supports SPI and i2c, the driver has only SPI Init in it leaving adding i2c support to adventurous developers. I’m using this as a key to start my DIY electric scooter bike. I will likely buy another - can’t beat the price!

Only problem is that the SPI connection is a bit faulty and randomly disconnects, however, still good for the price

I used the miguelbalboa/rfid: Arduino RFID Library for MFRC522 library on GitHub with the ThingPulse ESP32 board. It was super easy to get working.#if defined(ARDUINO_ARCH_ESP32) || defined(ARDUINO_ARCH_ESP8266)#define SS_PIN 21#define RST_PIN 22#endif#if defined(ARDUINO_SAMD_MKRWIFI1010)#define SS_PIN 7#define RST_PIN 6#endif// Initialize our FRID reader with a single instance:MFRC522 rfid(SS_PIN, RST_PIN);// Initialize our RFID key (new CARDSN/UID values found here)MFRC522::MIFARE_Key key;

Previously, I thought my readers were all defective as I couldn't pull firmware off them... Turns out that there's a few versions of the MFRC522.h library floating around and some call for you to swap the MISO and MOSI pins. Once I did this, these worked perfectly.These work great.

This worked briefly and then quit on me. I started getting firmware errors, suggesting it was a clone. I've had very good experience with HiLetgo products and I think this one was just a dud.

Bought three of these modules to use in parallel to try out an escape-room-style lock, and they seem to work really well. I have four of them (one previously owned) connected to the same Arduino Uno controlling a servo when four specific RFID tags are read. Excited to continue playing with these!

It took a bit of work to figure out how to use it on an esp8266. But eventually got it working. It senses up to about 1" I am going to use it on my garden railroad to detect which cars are at different industries