How to create RFID antenna

Can you please guide me as how to create RFID Antenna and how it can be integrated with RFID reader ?

Posted by arumansoft 6 years ago | last reply 6 years ago


how do you disable an rfid?

Asked by georgejones6404 7 years ago | last reply 7 years ago


How can I make a RFID locator for missing items?

Asked by 9 years ago | last reply 5 years ago


i want to make a project on RFID based library managment system?

Kindly guide me for that which tools are needed?

Asked by naveedhussain 5 years ago | last reply 5 years ago



Zip car card RFID location?

I just got a Zipcar membership and received a card, which I assume has an rfid tag to unlock the doors. Does anyone know where the tag is, so I could punch a hole in it (to attach it to a keychain)? Or how I could find out? Thanks!

Asked by 9 years ago | last reply 9 years ago


Will RFID work on a Key fob (Tesco sized Key fob) ? 53mm x 30mm.

Just want to know if it possible with it being small at 53mm x 30mm. Many thanks, Harry.

Asked by harryhaslam 6 years ago | last reply 6 years ago


Is it possible to add a low current LED to a passive RFID tag? Answered

The idea is to get the tag to light up when it gets within range of the reader.

Asked by THB.info 7 years ago | last reply 7 years ago


How to emulate a RFID key, cheaply?

I've gotten into this nasty little habit of locking my keys in my apartment (twice this month). It costs me 20 bucks to get back in! We have a RFID key which costs 50 bucks to get a copy of!, There is no code on the back of it either. So, I figure, I'm mechanically inclined, I know how to solder, I can read electrical schematics, I understand diodes, caps, variable resistors, resistors, switches, leds, grounds...so on and so forth. I by no means understand it all. Anyways, I am rambling. How could I build a cheap (under 50) key emulator? Just to keep in the Jeep for when this happens again

Asked by JekL 6 years ago | last reply 1 year ago


TakeAWay Festival London

Takeaway Festival is a RFID workshop festival tailored for designers. It's located at the Dana Center in London. So if there are any London based instructable members, hit it up and let us know how it was!Do it Yourself Media ... I like that.-bg

Posted by lamedust 10 years ago


Challenge - RFID reader + Wifi Module Low Cost.

Hi Guys,I'm an Oracle Architect and I have one customer that want to monitor water dispenser, he wants to know if water bottle was changed. I have a software to control it, but actually the people need to input this data manually and I would like one solution to do it automatically. I'm thinking to use RFID Reader on water dispenser and paste passive tag on water bottle and with this I'll receive the information and this data must to be send using wifi, I can't have cable in this solution (data and power cable is not possible). In my investigation, I just find rfid reader (UHF) able read a passive tag in 1 meters distance, the issue is, the UHF module is very expensive, I saw UHF module for 40 USD and I need something more cheaper. Is there another way to do it? I need suggestions and help to developer it.If need more info, send me email.Regards, Haysar Lelis

Posted by HaysarL 9 months ago | last reply 9 months ago


Lowest power required to light up an element, be it LED of light bulb or Neon?

What  component (led, bulb, neon...) needs the absolute minimum of energy to light up even dimly ? What I would like to do is to make something like RFID (no batt) that would be able so sense RF field from some distance, 2-3m. Thank you.

Asked by nccwarp9 7 years ago | last reply 6 years ago


Do RFIDs constantly track?

I'm wanting to buy some RFID tags for a project that I'm doing, and I'm wondering if passive RFID tags that are activated constantly track and  send their location to the RFID receiver.  This is absolutely critical to my project.If these don't, what can I use that does the desired function?  Thank you so much!

Asked by Spoops 2 years ago | last reply 2 years ago


'ible req: RFID Ring

Topic says it all :)  No access to a 3D printer

Posted by Lycaon 3 years ago | last reply 3 years ago


RFID antenna question. Answered

How sensitive is RFID functionality to the length of its antenna? Specifically, if I had an RFID like this one, cut the antenna and then resoldered it, would the loss in antenna length (I'm guessing about half an inch) affect the workings of the device?

Asked by Kiteman 5 years ago | last reply 5 years ago


RFID query: Programming RFID lock to accept "pre-existing" RFID chips?

I have no prior programming skills, and only a basic understanding of RFID technology. As my initiation to Arduino programming, I would like to build an RFID door lock/catch. I know you can buy RFID tags to program the system to accept, but can you also program the reader to accept other items you may have with an RFID chip? I'm not sure what other components might be in place to prevent that from functioning. Disney has RFID chip embedded bracelets, for instance which are used for a variety of things around the park.  They way I imagine the programming is that the reader reads an RFID and then records that ID to accept? Is there much more to that? Apologies for my ignorance at this point. Thanks to anyone for their clarification!

Posted by davidandora 4 years ago | last reply 4 years ago


rfid and arduin for barrier gate

I want to create a project using arduino barrier gate and RFID , as well as make use of the dc motor for driving the gate . please help me to complete this project , I have not been able to create a code arduino with RFID Thank you

Posted by AhmadA43 3 years ago | last reply 3 years ago


Need help connecting a servo and RFID reader to arduino

I need help connecting a servo and RFID reader to an arduino so that the servo turns when the reader is activated. Are there any instructions or tutorials that anyone can provide? 

Posted by hthnc-student 6 years ago | last reply 6 years ago


what does RFID stand for? Answered

Asked by ironmanou812 8 years ago | last reply 8 years ago


RFID questions

I am wanting to create a fun RFID / NFC device that will detect when different people walk into a room. We all have individual RFID door tags to open a door so I was wondering what the range was on RFID, would the person need to tap their fob or is RFID strong enough to detect if somebody is just carrying the fob in their pocket? If the RFID isn't strong enough, could I use something in their phone to detect them? Bluetooth maybe? Everybody has an iPhone, could I detect something on that? Any thoughts? Thanks. Phil

Posted by filthyPhil 4 years ago | last reply 4 years ago


Is it possible to read the RFID chips implanted into cats with a microcontroller for identification purposes? Answered

I would like to be able to identify my cats so that they can be fed according to their particular diet, and they are already implanted with RFID tags from the vet. I was hoping to use these tags instead of making my cat wear an extra RFID tag on their collar.

Asked by texner 7 years ago | last reply 2 years ago



Increasing the range of an RFID implant

So i was already planning on making both my cars keyless with RFID technology and possibly the house door to and i stumbled upon RFID implants. now they are pretty new to me but every thing i have seen on them, they are only able to be read at about 2 inches away.  With a good enough reciever could i increase that range to work better for my applicatiion?

Posted by ZACKHICKMAN501 8 years ago | last reply 8 years ago


RFID Project Assistance

I am Software Engineer and need to build an prototype. Please can you recommend the hardware according the requirements specified below     I have an Arduino UNO starter Kit here, also have an Arduino DUE     The basics of the system are as follows:     * RFID scanner (with buzzer if available) and Tokens required.     * Display LCD/VFD/Serial, Need to have 16 characters x 2 lines.     * Also need an PUSH button to control when the RFID needs to Stop/Start Scan - If its embedded in RFID/Display, my job is easier. Regards, jainvikas8

Asked by jainviaks8 5 years ago | last reply 5 years ago


RFID SENSOR FOR LAPTOP/PC THAT KNOWS WHO YOU ARE :p

Somebody needs to figure out a way to use a usb and connect it to a arduino or a raspberry pi because I am TIRED OF HAVING TO PUT IN PASSWORDS OVER AND OVER AGAIN!!!        thanks, thomas

Posted by txkirrane 4 years ago | last reply 4 years ago


How To Build RFID walk Through Sensors (Stands)?

Hi All, I am planning to build an School Attendance System, RFID Walk Through Reader, So i need help from your end how can i built it (Step by Step Processs and Need of Material i need to use for it). My Planning: Need to built an RFID Walk Through Reader, means, suppose if a student ware an RFID Card in his neck and when he pass through from RFID Reader stand (it may be 3 meters distance between ID card and Reader) then automatically this RFID Stand will read the students information from his ID Card and send SMS to his Parents automatically. will you please send me Step by Step Process how to build it and what type of material i need and what type of Software i need to develop, etc...to my mail id: md.bismillakhan@gmail.com, i hope i can get my answer as soon as possible from your end. Thanks & Regards Bismillah khan

Asked by bismilla 2 years ago | last reply 2 years ago


How Can I Read Data Off of an RFID reader?

I have an RFID reader and a mini - usb convertor for it. . I have the ID-12 reader and the usb board from SparkFun and need to know how I can read data off of the usb board on a PC. I have Hyper-Terminal, but when I plug in the reader to the usb port and open the program, it will not read any of my cards. The reader itself still beeps and blinks with a green led.

Asked by Data643 8 years ago | last reply 8 years ago


RFID READER HELP

Hello, can anyone help me design an RFID reader which can tell me when something is missing. I would like to build a reader for my file cabinet. I know this is hard but the reader will have to keep reading the files by maybe pinging and when a file is missing from the cabinet an LED will light up and maybe a small readout telling me what file is gone. Cabinet is small only 300mm so if anything is more than 300mm away from the reader it will light up. Can anyone help?

Posted by BryceK2 3 years ago | last reply 3 years ago


Help developing rfid scanner program for arduino?

I am developing a rfid scanner that will be embedded in a seat and will turn on things etc. I wrote the code to do it but for some reason when I swipe the tag over the parallax reader it does the designated task up to 4 times when it is required to only do it once per swipe. Please help me revise my code so it will only happen once per swipe. I am using: parallax reader running at 2400 baud Arduino Duemilanove 3 LEDs link to .pde file (change to .txt to read code in wordpad) http://www.multiupload.com/XZQWCQ7UW0 -Thanks! I would not ask for help but I have been looking for over a week and I am stuck!?

Asked by newrev426 7 years ago | last reply 7 years ago


Can I use an RFID reader and card to activate lights?

I was thinking of putting some string lights around the top edges of my room. Near the entrance, I want to wall mount an RFID reader in an enclosure so that when I wave the card in front of it, the lights would toggle on or off. I was also considering putting a second reader near my bed so that at night I could turn the lights off while sitting in bed. I would really like some help on how to do this because I don't have a clue on how to allow the reader to control the lights. Also, the lights will probably be ones that plug into a normal outlet, just in case anybody was wondering.

Asked by xlivewire7x 9 years ago | last reply 9 years ago


Will mylar block RFID signals? Answered

I have an idea for a small leather work project that would utilize mylar film as an RFID signal blocker.  I have tried to research the effectiveness of mylar film for this purpose and the consensus opinion seems to be a resounding "Yes, No and Maybe." If anyone can point me to an authoritative source or has personal information relating to this, I would be most appreciative. Thanks Addendum: Much as I anticipated, you have posted a host of excellent answers that gave me a lot of information I hadn't yet considered. For my part, I should have included more information concerning my project in my question. The Skinnerz response reminded me that I have some scraps of fine mesh stainless steel screen termite shield and I will give that a try rather than mylar for my wallet and passport case.

Asked by Burf 7 years ago | last reply 7 years ago


Any good tutorials for exploring and using RFID?

I'm looking to make a simple counter and scannable via RFID. Can you do this with RFID? For example, say I press a switch 100 times I want to be able to scan that circuit and read that the switch has been activated 100 times.

Asked by Spaceman Spiff 9 years ago


Beat an RFID reader/lock?

Wondering if anyone knows a way to bead an RFID lock reader, like the ones found on many security doors at schools and stores. I thought maybe there would be a way to make a RFID from a credit card, DVD case, etc. into one which could be used to unlock these security locks.

Asked by x0mb13z 8 years ago | last reply 8 years ago


Parallax RFID reader Door Lock Answered

I bought a parallax RFID reader from Radio Shack and was wondering how I could turn it into a door lock?  I don't have an Arduino or an interface to connect it to the computer.  I have some code from their site but i don't know how to put it on.  Tell me what I need and what I need to do.

Asked by Jessecar96 8 years ago | last reply 8 years ago


RFID BLOCKING, MADE SIMPLE

I have seen RFID wallets, sleeves, and cards.  I like the IDEA of RFID blocking cards that you sandwich your credit cards between. So, my question is thus... If I had two cards made of 21 gauge aluminum and placed them on in the last pocket on both sides of my wallet, would this block the RFID scanners?  If not, then what would it take? What just programming some RFID chips and put them in my wallet to eff with the scanners?  I know there are things like this in the market, but very over priced.  I have contacts in the RFID scanning and deployment world, so it would not be hard for my to get my hands on this stuff. What do you all think!?

Posted by benjaminleebates 3 years ago | last reply 3 years ago


can I make an RFID blocking wallet using aluminum foil instead of cans?

If aluminum cans can block RFID signals, how many layers of laminated aluminum foil (or, alternatively aluminum tape) would be needed to effectively shield a wallet?

Asked by Mr.Fancypants 8 years ago | last reply 3 years ago


how to protect mobile phones using rfid tags?

We have plenty of mobile phones used inside our office for testing and those need to be traced if it stolen or hand carried by outsiders,is it possible to use rfid tags to track those phones in exit points using rfid readers

Asked by 9 years ago | last reply 9 years ago


Can a can 13.56 mhz rfid reader read a 125khz tag ?

It's probably a stupid question but I'm hoping to find out

Asked by gradof6b 4 years ago | last reply 4 years ago


Unable to retrieve Rfid variable.

I am unable to retrieve string (RFID) from Arduino connected to Android app through Bluetooth . Arduino code #include #include #include #define SS_PIN 10 #define RST_PIN 9 char command; String string; MFRC522 rfid(SS_PIN, RST_PIN); // Instance of the class MFRC522::MIFARE_Key key; byte nuidPICC[3];// Init array that will store new NUID String RFID; void setup() {   Serial.begin(9600);   SPI.begin(); // Init SPI bus   rfid.PCD_Init(); // Init MFRC522 } void loop() {   if ( ! rfid.PICC_IsNewCardPresent())     return;   // Verify if the NUID has been readed   if ( ! rfid.PICC_ReadCardSerial())     return;        for (byte i = 0; i < 4; i++) {       nuidPICC[i] = rfid.uid.uidByte[i];       if(i==0)       {         RFID=String(nuidPICC[i],HEX);         //Serial.println(RFID);       }       else       {        String temp =String(nuidPICC[i],HEX);        RFID=String(RFID + temp);        }    }       //Serial.println("\n Rfid :-");    //Serial.println(RFID);      if (Serial.available() > 0)     {string = "";}         while(Serial.available() > 0)     {       command = ((byte)Serial.read());             if(command == ':')       {         break;       }             else       {         string += command;       }             delay(1);     }     if(string == "TO")     {        // ledOn();         //ledon = true;         //Serial.println(RFID);     }     rfid.PICC_HaltA();   // Stop encryption on PCD   rfid.PCD_StopCrypto1(); } Android Code rfid.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View v) {                 readrfid();             }         });  --------------------------------------------------------------------------------------------     // This will be the Readfrom Rfid !     private void readrfid()     {         String tp;         if (btSocket!=null)         {             try             {                 btSocket.getOutputStream().write("TO".toString().getBytes());                 ins = btSocket.getInputStream();                     while(ins.available() > 0)                     {                         //Reading from serial input                         valor= Byte.toString((byte)ins.read());                     }                 //Displaying readed value                 Toast.makeText(getApplicationContext(), valor , Toast.LENGTH_SHORT).show();             }             catch (IOException e)             {                 msg("Error");             }         }     } Thank You.

Asked by HiteshP16 2 years ago


How to make a miniture RFID Door Lock?

Hi guy's, First time poster here, Just wanting to know how hard it would be to make this (https://www.instructables.com/id/Arduino-RFID-Door-Lock/) as small as possible. Im a noob to programming so any help would be appreciated and or where to gat the parts would be great..Cheers.?

Asked by joker8656 7 years ago | last reply 6 years ago


How to connect an RFID card with a database?

Hello. I have been able to successfully read data from my RFID card using the card reader but I cant seem to connect my RFID card with my database that I have created using Microsoft Access and Visual Studio 2010. I want to be able to use my card to read data from the database when i swipe it and also be able to store data back to the card in order to update the information on each card. Please how do i go about this? I am using an arduino uno board and an RDM 6300 RFID reader 125kHz.

Asked by rasy09 4 years ago | last reply 4 years ago


Arduino pro micro RFID and servo

I've successfully implemented Door Unlock system described in this tutorial. At first I used Arduino Uno and RFID RC522 Reader and MG90S Micro servo. When I used Arduino Uno with Arduino Pro Micro for arduino ATmega32U4 5V/16MHz, the RFID reader stops wirking after pluging the servo. Since Arduino Pro Micro have only 5v output, I used resistors to downgrade 5v to 3v in order to poser the RFID reader. I used same output 'vcc' to select 5v for the servo and 3v converted to the reader. The problem is that each component woks perfectly independent each other, however, when I place them together they stop working.

Asked by NasrE1 2 years ago | last reply 2 years ago


Arduino with RFID MFRC522

Hi, I need your help with Arduino and RFID MRC522. I need a program that reads the card blocks and stores them in an array, reads the UID of the card and saves it in a variable, then instead, the opposite direction, that is, write the card blocks with values ​​in an array and write to the UID of the card with a code contained in a variable .. I hope for your help because I'm desperate with a school project to be urgent, sorry, unfortunately I do not speak English and I had to rely on google translator.

Posted by Biribiri71 2 years ago


RFID - Metal blocking receiver issues?

Please can anyone advise? So we've built a prototype that detects when a bottle is opened And triggers a software response. We need to build the real thing next. The prototype: We've used a small passive UHF RFID tag mounted on the lid of the bottle, hidden under foil. When the bottle is opened this tag pops out and can be sensed. We have a long range RFID scanner that recognised the appearance of the tag and send the signal onwards. This currently works ok at a Distance of around two meters. Problems with the prototype: The action of revealing the tag is not very reliable. Currently we've just experimented with various pieces of tape and foil attached to the tag and bottle. We need to develop something reliable that could be applied to a couple of hundred bottles. The range is a bit shorter than we'd hoped as well - ideally we need the range to be over 5 meters. Our reader has the option of adding multiple aerials though which may help. And perhaps we could have a set of readers linked It's not necessary to use RFID if some other way of detecting when the bottle has been opened could be used instead. The reason we chose RFID is that the bottle doesn't need anything very large added to it. We are trying to sell these things after all. We really could do with someone who can help make this system more reliable Both by helping us with improving the mechanism for revealing the tag and increasing the RFID sensing range

Asked by hanspan 6 years ago | last reply 6 years ago


RFID Tracking?

Someone posted a question asking about RFID tracking and didnt get a good response. I also have not found a simple answer to my question on Google. So I figured I'd re-ask the question in hopes of a better solution. In short, friends and I go disc golfing pretty regularly and losing discs is always stressful (obviously we are not pro's so the occasional disc will go into the wood or tall grass etc). I thought wouldnt it be great to stick a tracking device on these discs to help find them. RFID's being small enough to just stick them on and not sacrifice too much in performance to the disc, i figured that would be the best way to go. Question here: Is there a practical way to track rfid tags? basically just a device capable of telling you when the signal is getting hotter or colder. Thanks, DJ

Posted by madzilla 8 years ago


12vdc Arduino with bluetooth and wifi and RFID reading ability

I am looking to place one of these devices in a few storage rooms at my office and have them monitor the RFID stickers that are on my stock. Please message me directly. If you wish to be properly compensated for your work please make sure to have a connection with someone who lives in New Hampshire or Massachusetts as I would prefer this item that is developed to stay hidden until I obtain a proper US and International Patents.

Posted by JohnD19 4 years ago | last reply 4 years ago


Passive RF battery?

Hey i was just wondering what are typical conversion rates for signal to electricity in passive RFID tags? Information on the subject is usually not geared towards the electrical charge being generated.

Posted by Qcks 4 years ago | last reply 4 years ago


Equipment tracking using RFID

Hello there. I have this project where i intend to track down equipments entering and leaving the room. My first problem is im a newbie to Arduino and i don't have any clue on where to start.  I've already installed the software but i dont know what to do. Anyone who can help me? Or can anyone give me the code on how my Arduino will connect to my RFID reader? THANKS A LOT. By the way, im using Aceduino - an Arduino clone here in the Philippines.

Posted by Estela Alano 4 years ago | last reply 4 years ago


Giving Commands to a Figurine to be Read Digitally

I'm trying to incorporate a series of RFID tags and readers for a project concept I'm working on. I have next to no RFID knowledge and mainly work as a conception-est. The problem I'm having right now is having an RFID or something similar inside of a figurine respond to a command given from another RFID reader or chip. I've played with the idea of putting and RFID reader inside the figurine, but threw that out due to space constraints. While the size of the figurine is not set in stone, I'm estimating somewhere between 2"-5" and there are other components that need to fit inside.  Basically, the command that is given heals the HP etc. of the figurine when it is touched to the the figurine (The HP and other values are recorded digitally).  I'm sorry if I'm not very clear. I guess a good analogy would be the Kartoz if anyone has heard of that. But instead of the reader in the Main bunny, the reader is in the  tags. And each "Tag" has a different function.

Posted by DestatiOverload 5 years ago | last reply 5 years ago


How to make a RFID bracelet for a travel card (Oyster card)?

Im trying to make a bracelet which incorporates my London Oyster Card (RFID travel card) so i can just swipe my wrist and not faff about with wallets or pockets etc but I am having a few issues. The basic design is going to be simple and effective. I will have a length of regular guage wire around the wrist, secured by a single wire connector/ terminal block (see photo). It will prob be a earth wire, as it is a fancy colour. The RFID will be placed inside the plastic connector and hot glued end end to secure it and keep out the elements. The RFID's aeriel wire will be inside the earth wire heatshrink, it will be a loop of wire and can be as thick as it needs to be. I keep having problems though, I cant get the chip out of the card in one piece. I have been using nail varnish remover but with mixed results.   When/if I do get the RFID chip out of the card, i will need to solder a new aerial and I am unsure about the process. Does the length/gauge of wire matter for the function of the RFID? im thinking about its frequency. Will it need to be ceramic covered wire to avoid shorts? Has anyone put a contactless travel card into other things? Or has any experience dealing with this sort of area? I would very much appreciate any help or advice.

Asked by Clodester 7 years ago | last reply 6 years ago