Radio Frequency IDentification
0
votes
1answer
995 views
Know of any inexpensive UHF RFID reader modules?
I am evaluating RFID tags for a project, and would like to minimize the cost of the tags. We can find UHF (EPC Gen 2) tags for much less than HF (Mifare UL) tags. Unfortunately, the least expensive ...
1
vote
0answers
244 views
Will NXP NFC PN532 work connected to an antenna grid that is multiplexed?
Can I operate say 36 different antenna monitoring tags against a grid of small 2" x 2" squares by simply connecting the antenna to something like the NXP NFC PN532 through a multiplexer (N-to-1 ...
0
votes
1answer
98 views
Object identification options, reliability and cost…recommendation
I'm trying to evaluate options of identifying real world objects. We are creating a product that need to write data and read data based on the object. This would be a consumer product.
Some ...
0
votes
2answers
225 views
RFIDs versus Bluetooth
In terms of object tracking, I'm working on making a small device/tag that uses bluetooth technology to keep track of objects but a friend told me about RFIDs which are supposedly cheaper and also ...
4
votes
2answers
2k views
RFID antenna DIY
I am very new to this, but wanting to get started and need to construct an antenna for a reader that will pick up a 134.2 kHz RFID tag.
The antenna will need to be in "tunnel/culvert" under a road. ...
3
votes
1answer
284 views
RFID tags orientation issue…how to fix?
We have a product that is a toy bug net. At the bottom of the bug net is a coil that reads bugs with RFID tags in them.
For most of the bugs this seems to work fine and the net is able to identify ...
1
vote
1answer
298 views
Using Arduino Flora as a general purpose ID badge
I am a s/w guy, only just getting into embedded programming, with little or no knowledge of hardware .
I love the look of the new Flora wearable Arduino and would like to try a few simple projects to ...
1
vote
4answers
3k views
134.2 kHz RFID reader for Arduino
I am looking for an Arduino-compatible RFID reader supporting ISO 11784 & 11785, in order to read tags used for animals (mostly cats and dogs) identification.
I found both RMD660 and and Sniffer ...
1
vote
1answer
224 views
Arduino, problem with displaying RFID ID
I have recently gotten a Parallax RFID reader and I was trying to make it work with my Arduino uno. I have gotten all the necessary wires attached and I used a RFID reading program I found from Make ...
1
vote
3answers
1k views
Building a RFID-Zapper from the scratch
I would like to build an RFID-Zapper from the scratch (not based on a camera flash).
Since it is working with a high voltage, I prefer to ask first.
Does this look OK to you?
The capacitor is ...
-1
votes
4answers
374 views
Using RFID to secure and prove ownership of a stolen vehicle
Long story short: They stole my bike. This is the fourth one; apparently it doesn't matter how well you secure it, if they want it, they'll take it.
Now, the police actually caught them after a ...
2
votes
1answer
425 views
Does a RFID antenna need to be FCC certified?
Being a RFID UHF antenna a "passive" element does it need to be FCC certified? Or, we just need to have the RFID UHF reader certified?
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2answers
527 views
PN532 + libnfc + linux
Hi i bought a PN532 breakout board, I did install my cable FTDI, i did install NFC, nfc-list recognized my PN532, i did start the nfc-poll, its in listening mode, i've got my mifare card tag that came ...
1
vote
1answer
430 views
Visa payWave, MasterCard PayPass and ExpressPay, NFC and RFID
Since all those technologies use RFID contactless smart card and
EMV, are they compatible? Is contact-less Visa card compatible with the
Mastercard system?
Are the systems compatible with NFC? I.e. ...
1
vote
1answer
534 views
Are there types of passive RFID tag which can connect to control logic?
its been a few years since i've done any electronics but have been asked to research the viability of an idea and have gotten stuck...
We want to transmit a timing signal from RFID readers which will ...
1
vote
1answer
354 views
What's the technical limit to how small RFID-like system antenna can be?
So far I haven't seen a contactless smart card smaller than a standard credit card. My "biometric" travel passport holds a chip powered off the antenna - I lit the plastic holding the chip through ...
0
votes
2answers
140 views
RFID(CR003t) Not working with uno
I got this rfid reader today and it dosnt seem to work.. as i understand, if i connect it's tx to arduinos rx, it should give me an STX value of 02h. Or something like that..
So.. How is this supposed ...
2
votes
1answer
319 views
Passive RFID Tag: Unique Identifiers
I'm a bit confused on the uniqueness of each passive RFID tag.. are they unique globally?
Meaning, every RFID manufacturer (no matter if based in USA, China or India) never creates a tag with the ...
4
votes
3answers
177 views
use RFID remotely
From the answers to this question it's clear that RFID is passive and (therefore) doesn't work in the far field.
I was wondering if you couldn't use it remotely if you make an actual transmitter of ...
3
votes
3answers
206 views
coin shaped rfid tag
The university I study at has a special elevators for masters, and masters have somthing like a coin that they can use the elevator. As I know it's an rfid tag and it is a 125khz one. and have a 100 ...
2
votes
1answer
180 views
RFID car tags vs hand held tags, how exactly are they different?
The basic principle of RFID tags in cars for toll collection is the same as the hand held tags we use to open doors.
How exactly are they different? How come my door RFID reader does not read my tag ...
1
vote
4answers
570 views
Combining RFID badges
I have multiple RFID cards that I use to get into parking garages at the office, client site, home, parents place, etc, etc, etc.....
I'd like to either
A) combine all of these into 1 card or ...
2
votes
3answers
404 views
How can I locate items from a phone? RFID?
I'd like to be able to put something small on items (eg glasses, car keys, etc) and have an Android or iPhone app that will tell me the direction or proximity of a certain item. Current phones usually ...
3
votes
2answers
376 views
RFID module always finds the same non-existent tag when seeking
I'm wondering whether anyone has any experience with the SM130 Mifare module. I've managed to get my hands on one, sans antenna of course, and seem to be having a few issues with it.
I've got the ...
1
vote
2answers
4k views
Seeking cheap RFID reader / writer
What I do not want is one of those RFID readers which attaches to serial or USB port and writes its input to stdin.
I am looking for cheap & nasty RFID reader which I can query over serial or ...
1
vote
1answer
316 views
RFID Reader coding
I Have got my ID-12 module active and putting out the RFID tags' details to Serial as
String valu = port.readStringUntil('\n');
... then I print that to serial. ...
6
votes
3answers
990 views
RFID Antenna Array
Is it possible to connect more than one antenna to a single RFID reader module in order to pick up two different RFID chips at once?
I would like to create an arduino project like this..
1
vote
2answers
2k views
Recommendations for an active, directional RFID sensor
I have been using two Loc8tor devices (an active, highly directional RFID consumer device) on a personal robot to try to locate an RFID tag.
While the Loc8tor has served its purpose of showing an ...
6
votes
2answers
6k views
Questions about NFC's card emulation mode
NFC has a mode called "card emulation" in which it can communicate with a RFID reader because it acts as an RFID card. All the literature I have and the web serches I did only got me so far as with ...
0
votes
2answers
267 views
Having some issues with RFID reader
I just received an RFID reader from Parallax (#28440) to play with, and am having some problems getting it to send me data. I'm interfacing it with the mbed microcontroller that I also just received.
...
3
votes
6answers
1k views
Making a plastic card that looks like a credit card with a long-range module inside
Does anyone know how I could make a card the size of a credit card with something like a GPS/bluettoth/RFID module that could be detected from a relatively long range. The purpose is to see where this ...
6
votes
1answer
720 views
(Why) does this design suck?
I'm designing an Open Hardware door-lock-controller for our hackerspace, to these basic requirements:
Be made exclusively from available and inexpensive parts.
Read external Wiegand keyboard
Read ...
3
votes
2answers
310 views
Is there a good and reasonably priced way to make a custom RFID reader and barcode scanner that runs Android?
I'm building a system for a small manufacturing business that requires a mobile barcode scanner (at minimum) and would be great if it could be an RFID reader too. I would really like this to be a ...
9
votes
3answers
1k views
Best RFID Technology for long range detection?
I am considering building an RFID reader system that can monitor runners times in a foot race. I have read that there are three different types of RFID systems. LF, HF, and UHF. Which one would be ...
3
votes
3answers
1k views
RFID reader for a keyless residential entry system?
What are some good RFID readers to look at for a keyless residential entry system? Are there any on the market that can read a key fob or similar RFID token from a range of 3 feet or more? This would ...
5
votes
4answers
1k views
Construct RFID tag to turn on/off?
I am a very novice chiphacker and am asking for ideas on how I might implement something like this.
I am about to start an RFID project, which is the easy part. RFID readers are cheap, arduinos are ...
5
votes
3answers
622 views
Problems with a RFID reader from SparkFun
I am hoping someone here can help me.
I am having trouble with a RFID kit I bought from SparkFun. I purchased the USB RFID (SEN-08852) with the RFID Reader ID-12 (SEN-08419) and some RFID cards.
...
2
votes
1answer
722 views
RFID Reader UART
Was wondering if someone could give me a hand with a project that I am undertaking. I have searched forums high and low and am yet to find the information to solve my problems.
Basically I have an ...
10
votes
5answers
8k views
How do you build your own RFID reader?
What's involved in building your own RFID reader? As you guys would know industrial RFID readers aren't cheap, how do you energise the antenna, then read back the output?
15
votes
8answers
4k views
Electronic pet-door access control - RFID
Inspired by projects such as the tweeting cat door and CATaLOG [sic] I’m wanting to add some form of automated access control to our pet door to control who can go in and out, when.
(Full Disclosure: ...
