Anyone can help me please ?I purchased a NeoPixel WS2812 LED Stick but did not realize that it would not work with the FASTLED library as its RGBW. Restart your Arduino IDE Arduino Circuit Connection: RC522 Pin Wiring to Arduino Un SDA Digital 10 SCK Digital 13 MOSI Digital 11 MISO Digital 12 IRQ unconnected GND GND RST Digital 9 3.3V Supply 3.3V Pin Wiring Reading Data from a RFID Tag: If you have worked in an office before, you are probably aware of those RFID cards or Tags that would unlock specific doors depending on your access.Well let’s make a simple Arduino RFID reader using the RC522 module, and program the Arduino to do something when the right card is detected. Here are some of the features of these modules:[/vc_column_text][vc_single_image image=”14624″ img_size=”full” alignment=”center” onclick=”link_image”]Connect a red LED and a green one to pins 8 and 7 then upload the code on your board.
[vc_row][vc_column is_sticky=”yes” sticky_min_width=”767″ sticky_top=”80″ sticky_bottom=”0″ offset=”vc_col-lg-4 vc_col-md-4 vc_col-xs-12″][vc_raw_html]JTVCdG9jJTVE[/vc_raw_html][/vc_column][vc_column css=”.vc_custom_1553811200532{background-color: #ffffff !important;}” el_class=”project-content-box” offset=”vc_col-md-8 vc_col-xs-12″][/vc_column_text][vc_raw_html]JTNDdmlkZW8lMjBjbGFzcyUzRCUyMmVtYmVkLXJlc3BvbnNpdmUtaXRlbSUyMiUyMGF1dG9wbGF5JTNEJTIyJTIyJTIwbXV0ZWQlM0QlMjIlMjIlMjBsb29wJTNEJTIyJTIyJTNFJTNDc291cmNlJTIwc3JjJTNEJTIyaHR0cHMlM0ElMkYlMkZlbGVjdHJvcGVhay5jb20lMkZsZWFybiUyRndwLWNvbnRlbnQlMkZ1cGxvYWRzJTJGMjAxOSUyRjA0JTJGUkM1MjItUkZJRC1BcmR1aW5vLVR1dG9yaWFsLm1wNCUyMiUzRSUzQyUyRnZpZGVvJTNF[/vc_raw_html]RFID modules such as RC522 are used to read and write RFID cards or tags.This module works in 13.56 MHz frequency, and it can write data on tags in addition to read them. Can you tell me how I can fix this issue, please?Let’s make a simple Arduino RFID reader using the RC522 ModuleLet’s make a simple Arduino RFID reader using the RC522 Module#include // Include of the RC522 Library#include "FastLED.h" // Include of the FastLED library#include // Used for communication via SPI with the Module#define led_pin 5 // Pin 5 connected to DIN of RGB Stick#define SDAPIN 10 // RFID Module SDA Pin is connected to the UNO 10 Pin#define RESETPIN 8 // RFID Module RST Pin is connected to the UNO 8 Pin#define Buzzer 3 // Pin 3 connected to + pin of the BuzzerWe use cookies to ensure that we give you the best experience on our website. Take a look at The code compiles and uploads correctly and the Serial Monitor prints out this text:But when i bring an RFID card or chip to it nothing happens, it does not register anything. Full guide

Learn how to read and write on RFID tags using RC522 module. By Lucas_gosgnach.
It performs the function of a stopwatch for two times in the system, which can be run separately based on RFID user input. Arduino RFID Library for MFRC522 (SPI) MFRC522. Arduino RFID Reader / MFRC522 Turorial. ?This example is circa 2016, and probably uses an older library. It is based on … Interfacing of RFID RC522 with Arduino. Download Favorite. By expanding this piece of code, you can use it in more complex projects such as Is it possible to interface two RFID moudle interfacing in Arduino Uno boardRotary Encoder: How It Works and How to Use with ArduinoHow to Use KY-037 Sound Detection Sensor with Arduino Its quite easy to interface and works pretty fine. 59. This simple example will read the serial number on the Card or Tag, display it in the serial monitor, sound a buzzer and light up some LEDs.Of course this project could be interfaced to open doors, switch on a relay, light up an LED, or anything else you can think of.Keep in mind that there is a lot more you can do with these, like read more information from the card (the Cards used have around 1K of memory), as well as write or replace some information on the Card or Tag.The GND of the UNO is connected to the negative (-) pin of the buzzer, GND pin of the LED stick and GND pin of the RFID ModuleThe 3.3V pin of the UNO is connected to the VCC pin of the LED stick and the 3.3V pin of the RFID ModulePin 8-10-11-12-13 of the UNO are connected to pin RST-SDA-MOSI-MISO-SCK of the RFID ModulePin 5 of the UNO is connected to the DIN pin of the LED stickPin 3 of the UNO is connected to the (+) pin of the BuzzerWe are using the MFRC522 library created by LJOS to communicate with the RC522 module and the FastLED library to control the WS2812 LED stick.The code below will read the serial number of the Card or Tag when it’s close enough to be energized by the RC522 reader, and then compare that information to the value that we entered in the array called ‘GoodTagSerialNumber’, which is 0x95-0xEB-0x17-0x53.If the serial numbers match, then the buzzer will sound a short tone 3 times and light up the LED stick green, if not then a longer tone will be sounded and the LED stick will be red.As always for more information about the tutorial and explanation of the code please watch our tutorial video.Copy the above Sketch code in your Arduino IDE software to program your Arduino.Download The MFRC522 Library created by LJOS here: Once downloaded, just extract the content of the zip files inside your “Hi, problem with the var max-len !!! I changed the code to use the NeoPixel library and everything worked fine. 2. For my first project, I will make you discover a project that I designed myself, and more in English ! Well let’s make a simple Arduino RFID reader using the RC522 module, and program the Arduino to do something when the right card is detected.