HZ1050 RFID Reader with Arduino, interfacing and programming

(Last Updated On: April 2, 2021)

HZ1050 RFID Reader


HZ1050 RFID Reader- In this tutorial, you will learn how to use the HZ1050 RFID Reader with the Arduino and display the ID number of any RFID tag. I don’t know if the HZ1050 RFID Reader is as popular as the MFRC522 RFID Module. I have been using the RFID readers particularly the MFRC522 for quite a long time in different projects, which you can find in the related projects section given below.

This is my first tutorial on the HZ-1050 RFID reader. I came to know about this RFID reader through my friend Chimpo and decided to give it a try. A very cool thing about the HZ1050 RFID reader is that it does not need a lot of wires, this supports serial communication, so, you will need a maximum of 3 wires to connect this module.

Without any further delay, let’s get started!!!

The components and tools used in this project can be purchased from Amazon, the components Purchase links are given below:

HZ1050 RFID Reader

12v Adaptor:

Arduino Uno

Arduino Nano

Other Tools and Components:

Super Starter kit for Beginners

Digital Oscilloscopes

Variable Supply

Digital Multimeter

Soldering iron kits

PCB small portable drill machines

*Please Note: These are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!

HZ1050 RFID Reader:

HZ1050 RFID Reader

HZ1050 Features:

Wigan 26/34 selectable by one jumper

Baud rate selectable

With light indicator

Small size and exquisite

HZ1050 Specifications:

Only read ID card(EM4100 4001, etc)

Card frequency: 125K

Read distance: 3-10cm

Read time: <0.2s

Output port: Wigan 26/34; Serial port UART output, TTL level

Power: 3.3-5.5V

Work temperature: -55~+125°C

Humidity: 20-90%RH for work, 10-90% for storage

Pressure: 86-106Kpa

Size: 29*62mm

Cable: 35*54mm

Cable lead: 10cm

HZ1050 RFID Reader Pinout:

HZ1050 RFID Reader

On the right side you have pins for the serial communication and on the left side you have pins for the SPI bus. In this tutorial you will go with the serial communication. We will be using pins available on the right side of the HZ1050 RFID Reader Module.

HZ1050 RFID Reader interfacing with Arduino:

HZ1050 RFID Reader

you need only three wires to connect the HZ1050 RFID reader module with the Arduino. connect the 5v of the RFID reader with the Arduino’s 5V, Connect the GND pin of the HZ1050 with the GND pin of the Arduino, and finally connect the TXD pin of the RFID reader with the D2 pin of the Arduino. So, that’s all.

Everything is quite clear, on the right side we have the antenna where we swipe the RFID Card or Tag, in the middle, we have the RFID reader itself, and on the left side we have the Arduino Nano. You can follow the same exact connections using the Arduino Uno. Now, finally, we can start the programming.

Before, you start the programming; first of all, make sure that you download the wire.h library.

HZ1050 RFID Reader Arduino Programming:

HZ1050 RFID Reader Arduino code explanation:

You can use the Arduino’s default serial port, but as I always say, never use the Arduino’s default serial port, it should only be used for the debugging purposes. As in Arduino Uno and Arduino Nano, we have only one serial port, so using the SofwareSerial library we can define multiple serial ports. So this is the reason I started off by adding the SoftwareSerial library.

#include <SoftwareSerial.h>

#include <Wire.h>

SoftwareSerial HZ1050(2, 3); // RX and TX

int i, j;

long value;

In the void setup() function, we simply activated the RFID reader and the serial communication. For now, I am using the same baud rate 9600.

void setup()


HZ1050.begin(9600);    // start serial to RFID reader

Serial.begin(9600);  // start serial to PC


In the void loop() function, we simply read the RFID card or tag and added an if condition to check if the desired card or tag is present.

void loop()


value = NULL;


if (HZ1050.available() > 0)


value = NULL;

for (j = 0; j < 4; j++)


i = HZ1050.read();

value += ((long)i << (24 – (j * 8)));


while (HZ1050.available() == 0) {};




if (value == 9157613 || value == 6028023) // Your UID’s

{  Serial.print(“Accepted”);   // if correct uid is present do this…


//value = NULL;


else {   Serial.print(“Denighed”);

delay(200); // if incorrect uid is present do this…


// value = NULL;




HZ1050 RFID Reader Testing:

I uploaded the above program, opened the serial monitor, swiped my card, and I could see my RFID card number.

HZ1050 RFID Reader

So, that’s all about the HZ1050 RFID Reader. I hope you have learned something from this article. If you have any questions regarding this project or any other project, let me know in a comment.

RFID Related Projects:

How to get RFID Chip Implant in Humans and practical uses with Arduino

Arduino Firebase Database, Students Attendance system using RFID and GSM

RFID and IoT, ESP8266 RFID based Remote Access Door Lock, RFID IoT

Raspberry Pi Home Automation using RC522 RFID, Smart Home

Raspberry Pi RFID RC522 NFC Reader, Tags Scanner python code

Arduino RFID Servo Motor Control system for Car Parking “MFRC522”

RFID & GSM based student Attendance Alert message to parents

RFID based students attendance system with message Alert

Bike anti theft system using MFRC522 RFID module

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About the Author: Engr Fahad

My name is Shahzada Fahad and I am an Electrical Engineer. I have been doing Job in UAE as a site engineer in an Electrical Construction Company. Currently, I am running my own YouTube channel "Electronic Clinic", and managing this Website. My Hobbies are * Watching Movies * Music * Martial Arts * Photography * Travelling * Make Sketches and so on...

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