Arduino Projects

RFID Chip in Hand, Talking RFID System using Arduino, chip implant uses

RFID Chip in Hand, Description:


RFID Chip in Hand, Talking RFID System using Arduino, chip implant uses- This week we will be showing you an interesting system a friend of mine has made. A talking RFID bike control system that works with the RFID Chip in Hand. Before we are going to explain anything, first, take a look at the video given at the end of this article to get the idea of what you are going to learn after reading this article.

About the Sponsor of this Project, PCBWay:

RFID Chip in Hand

High quality & Only 24 Hours Build time

The PCB board used in designing the talking RFID System is sponsored by PCBWay. Feel free to visit their website to not only find out what awesome PCB and Assembly services they offer but also to easily upload your Gerber files and thus order affordable and high quality PCBs quickly. The sign up process hardly takes 1 minute and you are welcomed with a 5 dollars welcome bonus.

Download Project Gerber Files:

A talking RFID System. This allows the user the ability to interact with any system that uses the RFID or NFC technology. You can use your hand as the key or you can use a regular RFID keychain or even you can use an RFID tag. So, in the end you are the one to decide, whether to get the RFID Chip in Hand.

In this article, we will cover,

  • How to get the RFID chip Hand Implant.
  • Complete circuit diagram explanation.
  • Components explanation.
  • We will talk about the PCB Gerber files.
  • How to place online order.
  • Program explanation.

Our designed talking RFID system can be used with Bikes, Door Lock Systems, Home Automation systems, etc.

RFID Chip in Hand

Making the final Talking RFID system wasn’t that easy, we had to perform a series of experiments on breadboards, we used different types of MP3 players and RFID modules.

RFID Chip in Hand

These experiments helped us in selecting the final components to make a complete working product.

RFID Chip in Hand

We have been testing the final prototype model for days, it had some bugs which we fixed and now it’s working great.

Finally, we were able to design a complete working product. Now, let’s talk about the components, connections, and programming.

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

Purchase links:

Arduino Nano USB-C Type (Recommended)

Mini RC522 RFID Reader

YX5200 Mini Mp3 Player

TDA7297 Audio Amplifier

DC to DC converter 12V to 5V

NExT RFID Chip Implant UK based

NExT RFID Chip Implant US based

Other Tools and Components:

ESP32 WiFi + Bluetooth Module (Recommended)

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!

Getting the RFID implant:

RFID Chip in Hand

In my previous article “How to get RFID Chip Implant in Humans and practical uses with Arduino”, I have already explained each and every detail, like for example, the type of the RFID chip we selected, its technical specs, how to get these RFID chips, etc. so I highly recommend you should take a look.

We also designed a very basic Bike access control system with sound acknowledgement. In this project we used the DFplayer Mini Mp3 module. The above two articles worth reading, you will get answers to a lot of questions.

Bi-directional Voltage Level Converter:

If you’ve ever tried to connect a 3.3V device to a 5V system, you know what a challenge it can be. bi-directional logic level converter is a small device that safely steps down 5V signals to 3.3V AND steps up 3.3V to 5V at the same time. This level converter also works with 2.8V and 1.8V devices.

RFID Chip in Hand

The level converter is very easy to use. The board needs to be powered from the two voltage sources (high voltage and low voltage) that your system is using. High voltage (5V for example) to the ‘HV’ pin, low voltage (3.3V for example) to ‘LV’, and ground from the system to the ‘GND’ pin.

YX5200 or 5300 Mini MP3 Player:

RFID Chip in Hand

This is the YX5200 or 5300 Mini MP3 Player provided with an audio jack and 4 male headers on the top side, while a slot for the SD card can be found on the back side. The 4 male headers are labeled as RX, TX, VCC, and GND. This mini mp3 module can be easily powered up using the Arduino 3.3v or 5 volts. Using the RX and TX pins commands can be sent serially from the Arduino board to this MP3 player. This mp3 module can also be easily used with the Nodemcu ESP8266 and also with the ESP32 Wifi + Bluetooth module.

YX5200 Details:

  • Support sampling frequency (KHz):8 / 11.025 / 12 / 16 / 22.05 / 24 / 32 / 44.1 / 48
  • Support file format: MP3/WAV
  • Support Micro SD card, Micro SDHC Card
  • 30 class adjustable volume
  • UART TTL serial control playback mode, baud rate is 9600bps
  • Power supply can be 3.2 ~ 5.2VDC

TDA7297 Audio Amplifier:

RFID Chip in Hand

This is the TDA7297 digital Audio Amplifier module provided with the Audio jack, Volume adjustment knob, two block terminals on the left and right sides for connecting the speakers, and one terminal block for connecting the 12V power supply.

RFID Chip in Hand

This is the basic connection diagram. This Audio amplifier module can be connected with the YX5200 Mini Mp3 module through an AUX cable.

RFID Chip in Hand

Using the same connections we started checking the TDA7297 Audio Amplifier. We connected the TDA7297 Audio Amplifier with the Mini Mp3 player using the Aux cable and we were able to play the audio files.

Mini MFRC522 RFID Reader:

RFID Chip in Hand

The mini RC522 RFID Reader which is just like the bigger version, you can clearly see in the picture it has got the same pins. The only difference is in the size and this is the only reason we selected this module. For the best and long term performance we are going to connect all the pins of the Mini MFRC522 RFID module with the Arduino Nano through the Bi-directional Voltage level converter.

Interfacing Mini MFRC522 and YX5200 Mini MP3 Player with Arduino Nano, Circuit Diagram:

RFID Chip in Hand

This schematic clearly shows the connections of Mini MFRC522 RFID Module, Bi-directional Voltage level converter, YX5200 Mini Mp3 player, 5V 4 channel relay module, and TDA7279 Audio amplifier with Arduino Nano.

Let’s start with the 5V 4-channel relay module. The Arduino Nano D3 to D6 pins are connected with the 4-channel relay module to control the 4 relays. The 5V and GND wires from the Arduino Nano are also connected with the VCC and GND pins of the relay module.

D7 and D8 pins of the Arduino Nano are connected with the RX and TX pins of the YX5200 Mini Mp3 module. The VCC and GND pins of the Mp3 module are connected with the Arduino Nano 5V and GND pins. The YX5200 Mini Mp3 module is then connected with the TDA7297 Audio amplifier through the Aux cable. The TDA7297 Audio amplifier 12V and GND terminals are connected with the 12V Battery. While the other block terminals are connected with the speakers.

The Mini MFRC522 RFID reader module is connected with the Arduino Nano through a Bi-directional voltage level converter using the Arduino Nano pins D9, D10, D11, D12, and D13. While the VCC of the Mini MFRC522 is connected with the 3.3v and of course the GND is connected with the ground of the Arduino Nano.

Talking RFID system PCB board:


RFID Chip in Hand

Next, we designed the PCB using the EasyEDA PCB designing tool and generated the Gerber Files. Then I used the PCBWay online Gerber viewer and double checked all the connections. After I was satisfied, the final step was to upload the Gerber files.

PCBWay Online Order placement:

You can simply start by typing

Click on the Sign in.

The sign up process hardly takes 1 minute. You can sign up using your email id or your Facebook account. If you are new, then you will also get a 5 dollars welcome bonus. Anyhow I have already signed up, so I will go ahead and click on the Sign In button.

RFID Chip in Hand

Once Signed In, click on the PCB instant quote, this will take you to another page. Scroll down and enter the desired information.

RFID Chip in Hand

  • PCB size, I entered 100×100 mm. As I am ordering a PCB panel board.
  • Quantity, I selected 5 pieces.
  • Solder Mask, the default is Green, but I selected the Black color.
  • You can select white or black color silkscreen. I will leave everything else to their default values.
  • Finally, click on the calculate button.
  • Select your country and the service.
  • Finally, click on the Save to Cart button.
  • The final step is to add the Gerber files, for this click on the Add Gerber File button and select the folder.

RFID Chip in Hand

  • Click on the Submit Order now button.

Once the order is submitted, the PCBWay staff members will review the Gerber files. When the Gerber files are approved they will let you know through an email.

Talking RFID Bike control system Arduino Programming:

Below is the final code of the talking RFID Bike control system. Most of the instructions are well commented.

Talking RFID Bike control system Final Testing:

We developed a prototype model, and it’s been under test for several days. You already saw everything in action. Now we are waiting for the final PCBs from the PCBWay Company to complete our final product. Meanwhile we will continue with the performance tests and will keep you updated.

After receiving the PCBs I will update this article, add new images of the final product, and will also explain the entire assembly and installation. Don’t forget to subscribe to my website and YouTube channel, if you want to be notified.

Watch Video Tutorial:



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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