Radio Frequency IDentification

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-3
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0answers
23 views

SAM module in Payment transactions & cryptogram key storing [closed]

Based on the Point of Sales Reference Design from NXP I'm trying to develop an initial contact-less POS system.Almost I'm familiar with definition of SAM modules. As you know because of low security ...
0
votes
2answers
47 views

Grounding dc project to clean RF noise

I'm doing a home automation arduino / RFID project and using a 12v DC switch mode power supply to power it. This supply will be plugged in to a wall outlet. The project however will have some ...
0
votes
1answer
65 views

Electromechancial locks used in a turnstile

I was looking to build a RFID operated turnstile similar to picture below. I will have RFID readers on both ends where the door would open from either end only if the RFID is authenticated on either ...
-4
votes
1answer
50 views

RFID card number? [closed]

CARD 18 DIGIT NUMBER :- 0009008413 137,29981strong text But one problem is my overall project interfacing done now me try to expand system .how to get card number ? yes i have one ready rfid reader ...
1
vote
0answers
55 views

What's the best way to test if an RFID blocking wallet is effective?

I was recently gifted a wallet that alleges to block RFID signals. It's just a normal wallet with an embedded metallic lattice acting as a Faraday cage. Experimentally, it seems to work some of the ...
0
votes
1answer
56 views

Low output voltage from arduino pins problem

I using RFID module and the project working well but the only problem is low output voltage from arduino pins when i put the card near module. it is about only 2v not 5v. i test other pins but the ...
1
vote
2answers
75 views

Safety tips for 350V @ 134kHz

I'm hooking an RFID reader up to an antenna. The reader operates at 134kHz and, due to its resonant circuit design, it can produce up to 350V (peak to peak) across the antenna terminals, with max ...
0
votes
1answer
30 views

Why are there types A and B in ISO 14443?

I'd like to understand why the ISO 14443 standard describes two types of interfaces, type A and type B. This answer talks about competing technologies brought forward by two different companies: ...
-4
votes
1answer
53 views

passiv RFID or NFC tag with high range [closed]

I am searching the internet for quiete a while now to find out which passiv RFID Tags and which passiv NFC Tags have have the highest read/write distance. I am aksing here because the most information ...
0
votes
1answer
48 views

Understanding a debit card reader through RFID

I work in the bus industry and today I went to a meeting that gave me an idea for a project. In order to start the project, I need to gather a technical perspective of how the product that I saw in ...
0
votes
1answer
63 views

Detecting a Objects in a Box

I want to build a device using an Arduino or similar that would allow me to detect when particular objects were in a box (things like a TV remote for example). My thought was that I could use rfid ...
-2
votes
3answers
52 views

RFID reader without micro-controller [closed]

I wanted to build a RFID reader without using any micro-controller or chips or Arduino. But everywhere on the internet, I find that these are used in the circuit. Is there any way I can make one ...
0
votes
1answer
44 views

Does length of wire to NFC antenna affect ability to read tags?

Most questions regarding NFC antennas pose the question if it's possible in increase the reading area of an antenna. I'm curious: given a fixed size antenna, does increasing the length of wire ...
1
vote
3answers
106 views

High accuracy wireless triangulation in a small space?

the question pretty much states the basic idea, but here is my use-case; tabletop war-gaming. Optimally I would like to be able to tag each of my “play pieces” with some sort of tag, place a few ...
1
vote
1answer
50 views

Sharp corners in RFID antennas

I have heard anecdotally that a square HF RFID antenna performs worse than a circular one, but I am struggling to find any articles on why this is the case. I assume there is a charge concentration ...
1
vote
1answer
37 views

Replace RFID with external pilot

im my company there is a gate, which can be open with standard RFID card like this is there any why to replace it with external pilot ? How to do it ? EDIT: How do I understand it: when I close ...
-1
votes
1answer
55 views

Is it possible to multiplex the same frequency (without bandwidth division)?

I have a range of bandwidth (e.g. [865,868] MHz) and more than one RFID tag I'd like to receive information from, over that range. How could I multiplex those ...
0
votes
1answer
64 views

NRF24L01+ and NRF24LU1+ Communication - RFID application

I have an RFID application in which tag has NRF24LU1+ and the Reader has NRF24L01+ chip. The Reader is based on STM32F4xx Micro-controller. I have two same Readers which are communicating with ...
0
votes
1answer
28 views

What does Fujitsu call an “RFID LSI”?

Fujitsu offers ferroelectric RAM modules, including in "RFID LSI" format. I have no idea what those are, and the engrish documentation doesn't help at all.
0
votes
0answers
59 views

Is it possible to read RFID card and trasmit the data to Android device using bluetooth transceiver without using any microcontroller? [closed]

My aim is to read RFID card and have the data on android device using bluetooth. Devices I am thinking of use are 1. RDM6300 RFID Module - RFID Reader 2. Bluetooth Transceiver Module Do suggest any ...
0
votes
1answer
97 views

Indoor Location Tracker for Automated Cameraman

I am new to Electronic Hardware, but have prior experience with Custom built web applications. Recently purchased Raspberry Pi and have been thinking of different projects to make with it as the ...
-1
votes
1answer
64 views

What are the options for short range under six inches 3D multi point location tracking?

What methods exist to track the position of points relative to each other. Particularly what methods allow the determination of the distance between up to ten points at once. The distance ...
1
vote
0answers
76 views

Detecting the distance of my dog to the food bowl

When one of my dogs sneaks to another dog's food bowl, I want to be notified so I can stop it. I have EZ430-RF2500 (msp430) development kit. Is it suitable for such project? I also have Arduino so I ...
0
votes
1answer
77 views

Transmitting data over inductive charging coils (or boosting RFID/NFC power supply)

I know that data can be sent over power lines through various different types of modulation - that is as far as my knowledge ends. I have a small D.I.Y. project (a board game) that requires some form ...
15
votes
3answers
724 views

Why can't you put a plane under a trace antenna?

I'm working with RFID for the first time. All the app notes I've read show a separate region of PCB allocated for the trace antenna, with no planes above/below. I want to understand why this is, and ...
0
votes
1answer
84 views

Can I replace a 27.12MHZ by a 13.56MHZ Xtal on PN532

I have a prototype of NFC reader which is attached to my Board. But it seem it doesn't work ... the only change I made was the Xtal because I don't find 27.12MHZ. Some people told me I can replace it ...
0
votes
1answer
53 views

125kHz RFID and NFC simultaneously

It it possible to have a passive NFC tag and a 125kHz RFID tag back to back in the same holder and not have one interfere with each other, reading one at a time? E.g Detect 125khz RFID tag, read it, ...
-1
votes
2answers
100 views

What technology does smart keys for car use? [closed]

How does a smart key know that the driver is in the car?
0
votes
0answers
56 views

Crystal routing in layout

We started production for a project with RFID reader (13.56Mhz) which have an external crystal of 13.56Mhz. The layout was designed by a Chinese design house which I'm afraid that did a small mistake ...
0
votes
1answer
79 views

RFID chessboard

I want to make a electronic chessboard that detects the position of every piece on the chessboard. So I did some research, and one way would be to put RFID tags under every chess piece. Each tag ...
4
votes
5answers
115 views

Is there a sensor for counting the number of cards in a flipping scorecard? [duplicate]

I have a stack of cards and want to know how many cards are in the stack at any given time. Any thoughts on how I might be able to do this? Would it be possible for me to put a tag on every card and ...
0
votes
0answers
66 views

MFRC522 Interrupt Handling

I am working on a project that reads RFID tags/cards by using MSP430 and MFRC522 module. Module communicates with MSP430 via SPI. It detects cards and reads serial number with polling properly. ...
2
votes
1answer
121 views

RF switches for RFID HF 13.56Mhz

I would like to use 1 RFID reader (13.56Mhz, protocol iso14443a) with 2 antennas in a way that I can recognize the location of the tags- if they stand on antenna #1 or #2. For that, I tried to use 2 ...
0
votes
1answer
73 views

How to track the 3d movement of a small animal in a 4x4x8 meter cage?

I need to track the movement of a small animal (60 grams) in a cage which contains plants, shelter, branches and so on. I need all three coordinates in real time. Spatial resolution should should not ...
0
votes
1answer
46 views

mifare ultralight c

i am tired of searching information about this and finding nothing about it, so i am here looking for some professional help. I wanna know if a RFID mifare ultralight c chip can be connected to the ...
5
votes
1answer
265 views

How to identify unknown component

I've recently got myself a bus pirate to read an EEPROM which is labelled fm24c32a since that's the only thing I could recognize on the board (the IC was covered by a blob). I managed to identify a ...
4
votes
1answer
149 views

Tuning ID-3LA RFID antenna using oscilloscope

I've got an ID-3LA chip wired up to an arduino and an antenna I wound myself with 30 AWG magnet wire. It works, but I've read that I should be able to tune the antenna by connecting it to an ...
0
votes
1answer
77 views

RFID wristband for cashless payments [closed]

Most cashless payment systems using RFID seem to use HF (13.5MHz) tags. My questions are: Why do RFID wristbands used for cashless payments use HF over LF transponders? Some access control ...
0
votes
2answers
101 views

Long range RFID [closed]

Do you know which technology can have better range with and without battery assitance than RFID? This is for a school project, we are looking for ways to detect crab traps lost in the sea. We ...
0
votes
2answers
80 views

RFID reader antenna with 2 series capacitors - what do they stand for?

I have found a RFID antenna "ready to use with enclosure". However, it has a coil in series with 2 3.3nf 50V capacitors. It doesn't work with my cheap RFID reader circuit (HZ-1050); it only works if ...
1
vote
1answer
112 views

What applications use ISO/IEC 14443 Type B?

I bought a MFRC RC522 rfid module for my Arduino Leonardo, after I purchased it I notice it only supports ISO/IEC 14443 Type A, and not Type B. I was curious what applications uses Type B anyways? I ...
2
votes
2answers
89 views

Detecting numbered cards in a stack?

We are attempting to electronically determine which of 10 cards, numbered 1-10, is currently in front of a stack. Initially card 1 is in front. Eventually card 1 will be flipped around to the back ...
1
vote
1answer
236 views

How to program USB RFID reader/writer module?

I bought an USB RFID reader/writer module from local store, it is not well known and branded, It connect to computer with USB port , and i want to write a program for it in Linux Ubuntu. I find out ...
0
votes
2answers
62 views

Identification Technique

I'm building a 20cm x 20cm table that is divided into cells, it has 4 rows and 4 columns. There will be different external blocks that have numbers, each block can stand on a single cell, each block ...
0
votes
1answer
126 views

Can an MFRC500 read a 125khz RFID card?

I'd appreciate a clear explanation on: If RFID readers of one frequency (like 13mhz MFRC500) can read other/lower frequency RFID cards (like cheap 125 khz cards) If it's possible to build a 125 khz ...
0
votes
1answer
326 views

Passive RFID with small size, light, cheap and range in meters for a reader

I'm a software guy so a bit on deep waters here so I thought I'd ask here. :-) I'd like to understand if it is possible to have an RFID tag with the following properties: weight: a few grams, size: ...
0
votes
2answers
101 views

UHF RFID enter/leave detection

I want to create a kit which can detect if a person is entering or leaving a room. During my research I decided to use RFID UHF technology. The kit's content: Two antennas placed next to each other ...
-1
votes
1answer
41 views

RFID reader and bluetooth connectivity

Can an RFID reader detect bluetooth device? I downloaded an application called RFID explorer on my phone. The application helps to get read by RFID readers. I switched on the bluetooth on my phone and ...
2
votes
2answers
306 views

Wireless data exchange up to 2 bytes/s

I would like to set up communication between two Arduinos with a distance of 20 cm, but not more than 40 cm. I looked for an RFID solution, and I found a lot of PCBs which can be used to ...
0
votes
1answer
79 views

ANT-MMCX and Microstripe line and UHF RFID module circuit designing

Below, you see the only schematic of a 6 pages-datasheet of an UHF RFID module (working frequency = 840...930 MHz): There are three questions: What is that ANT-MMCX? I search it in Google and I ...