RFID reader IC

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ravi_p

Joined: 29 Jun 2004
Posts: 38

23 Sep 2004 13:02 rfid reader ic

Hi

I am looking for low cost low frequency RFID reader IC.Can anyone suggest me the IC

Thanks

Mr_Programmer

Joined: 21 Feb 2002
Posts: 153
Helped: 4

23 Sep 2004 13:26 rfid reader schematic

As example Sokymat reader IC, works at 125kHz, supports Read-Only and Read-Write transponders.

beuch

Joined: 06 Jun 2001
Posts: 65
Location: France

23 Sep 2004 14:45 rfid schematic

The cheapest I know is Philips HTRC110

Taro

Joined: 28 Jun 2001
Posts: 147
Helped: 3

23 Sep 2004 16:15 rfid reader schematics

Have you ever try to search data at Em Microelectronic-marin?

www.emmicroelectronic.com

whitenoise

Joined: 21 Aug 2001
Posts: 34

23 Sep 2004 17:28 avr rfid reader

You can read the topic at

http://www.edaboard.com/viewtopic.php?t=30059

There is also other 13.56MHz products from Philips (for I-Code, ISO15693 and ISO14443) and Melexis (a chip very similar to S6700 from TI).

Hope it helps,
bye wn.

luben111

Joined: 02 Mar 2002
Posts: 105
Helped: 2

24 Sep 2004 9:21 rfid schematics

Hello,

Try U2270B - works great and is very reliable. I used it in many my projects and I never had problems. If you play with the schematic you can get reliable reading from 25 cm (it's my own experience).

Best regards
Luben

ravi_p

Joined: 29 Jun 2004
Posts: 38

24 Sep 2004 11:44 rfid reader avr

Hello

can you please send me the schematic to my email ravi_p67(at)hotmail.com

Thanks

traxonja

Joined: 06 Apr 2004
Posts: 109
Helped: 1

24 Sep 2004 15:17 rfid circuit schematic

Could you post the schematics HERE ???

I would like to build it too.

I use ID-12, 125kHz readers, from www.elatec.de.

luben111

Joined: 02 Mar 2002
Posts: 105
Helped: 2

25 Sep 2004 16:26 cy8c0104

Hello,

here I'm putting one of my projects - door lock system. You can find here everything - schematic, sources and HEX. I guarantee that HEX is working and is tested on over more then 100 successfully sold devices.

The first card that you approach after the chip is programmed becomes MASTER card. When you approach master card, the chip runs in LEARN mode - if you approach other cards and they don't exists in the memory - they are added, if they exists - removed.

The chip supports 24 cards and one master card. Can control door (with motors and magnets). Works really fine and I'm proud with this project.

best regards
Luben

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7rots51

Joined: 17 May 2002
Posts: 1427
Helped: 14

25 Sep 2004 17:47 rfid card reader schematic

luben111:
thanks for the codes,please upload the sch of it plz.

luben111

Joined: 02 Mar 2002
Posts: 105
Helped: 2

25 Sep 2004 19:53 schematic rfid

Hello,

Actually inside the ZIP file is the schematic in ORCAD format (DSN), but to make it more convenient here I'm uploading it in PDF format. I even made some designs, where the coil is on the PCB, but I got that for sure is better to use external coil.

Actually to increase the sensitivity you have slightly to modify the schematic - just open the U2270 data sheet and copy the schematic around the coil... as I remember there were 4 diodes.

What I remember is that the coil is 68 turns 0.2 mm wire on diameter 60mm. To get the maximum range you should carefully adjust the frequency exactly on 125 KHz... I'm sorry it's been so long time ago and I forgot everything...

And to erase all cards in the memory you need to hold the master card in the coil field ~2 minutes (in case that a card is lost or stolen) - after then you should enter the cards again (master card is NEVER erased).

best regards
Luben

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Free_Will

Joined: 06 Apr 2002
Posts: 65

27 Sep 2004 20:49 long range reader u2270

Cypress CY8C0104/05 chip/module is the new competitor of u2270b. It has many addtional features such as automatic decoding and programmability.And it is the cheapest one in the market.

www.sonmicro.com
http://v4.cypress.com/support/reference_designs.cfm?objectID=0A8B3C35-3758-4CB4-AC82381155198B02&tid=54A040FA-2262-424A-B14741267CBD1308

Last edited by Free_Will on 23 Dec 2004 21:09; edited 1 time in total

SphinX

Joined: 25 Jan 2002
Posts: 1069
Helped: 28
Location: EGYPT

27 Sep 2004 21:59 schematic for rfid

Salam,

in my work, we use U2270B (SO16 package) to design our wiegand reader Smile

Bye

tR|GG3rX

Joined: 28 May 2004
Posts: 42

28 Oct 2004 9:51 id2 antenna rfid

one question, can an RFID IC made by one company corresponds to transponder ICs made by different companies? is this possible?

george powell

Joined: 18 Dec 2004
Posts: 2

18 Dec 2004 6:27 u3280 schematic

Better than the U2270 is the ID2. Try a google search.

Last edited by george powell on 30 Jun 2005 5:09; edited 1 time in total

traxonja

Joined: 06 Apr 2004
Posts: 109
Helped: 1

18 Dec 2004 10:42 rfid reader ic circuit

Hello Mr. Georg,

What are the prices of those readers and what kind of reader is that one that requires an OpAmp? Do you have some schematics?

I have contacted you via email.

Muris Trax

xun

Joined: 08 Dec 2004
Posts: 14

26 Jan 2005 3:28 schematics for an rfid reader

Luben111, thanks for the u2270 example!
Does the u2270 output manchester code at its output pin?
How many bits does the u2270 output to identify a tag one time? I will convert the output signals into wiegand code. It will be easier if the output is a 3*8bit signal one time.

jshroff

Joined: 30 Apr 2004
Posts: 116
Helped: 14

26 Jan 2005 13:45 id12 rfid reader examples

Hi Can you also post the circuit for the Card?

Thanks

Taro

Joined: 28 Jun 2001
Posts: 147
Helped: 3

26 Jan 2005 15:19 rfid 13.5 circuit

Try this one
http://www.rfid-handbook.com/downloads/iso_14443-testcard.html

hachani

Joined: 30 Jan 2005
Posts: 4

30 Jan 2005 17:21 sokymat reader ic

hi,
you can look for u2270b from temic or htrc110 from philips

tjalps

Joined: 28 May 2001
Posts: 266
Helped: 2

30 Jan 2005 18:21 sokymat reader

Hello!

Bellow you can find some links for OEM modules:

http://www.crosspoint.nl/
http://www.datatronic-rfid.com/alt/start.html
http://perso.wanadoo.fr/id-mos/Pages/rfid.htm
http://www.sefea.com/html/uk/pdf/Mkpdf.htm

Regards!

ElecThai

Joined: 11 Jun 2004
Posts: 51

31 Jan 2005 4:28 u2270 source code

www.chipcon.com

Google
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Google Adsense

31 Jan 2005 4:28 Ads

esca

Joined: 03 Feb 2005
Posts: 1

16 Feb 2005 21:05 cheapest rfid reader ic

Id like to program the u2270 with a wireless keypad using a transponder. Atmel has the u3280/u9280, but sells it in large quantities. Any alternative idea?

george powell

Joined: 18 Dec 2004
Posts: 2

30 Jun 2005 5:02 ti rfid circuit

I have tried the U2270 but it does not really have good range. The problem is that it requires a sqare wave detect input. The ID2/ID12 series are much better as they are smarter and require an analogue input. The analog input is digitised and processed. Vibration and noise effects are reduced and the range is much more. With an ID2 and an external antenna I have read ISO cards at over 40cms!!! Some geeks report even more but I suspect they are driving the ID2 too hard. Another important aspect is the ID2 will accept a high Q antenna - try that on a U2270, the recommend Q is 10, give it a Q of 100 and it will stop reading completely. The see ID series are advertised at Mannings, Tectus, Adilam and a few other places. Oh yes, and the ID2 only requires an antenna and 5v. The ID12 has a biult in antenna. Makes life easy.

guttinasrinivas

Joined: 04 Apr 2005
Posts: 21
Helped: 1

20 Jul 2005 14:58 rfid reader with avr

Hey
Somebody please tell me where can I get any of these chips in India. Thanks in advance

chentzin

Joined: 28 Jul 2005
Posts: 9

28 Jul 2005 15:51 sonmicro rfid reader schematics download

Hello Luben111,

Thanks for the schematic and everything. I want to modify the circuit. I need to read the tag id from the reader from my computer through the serial port. Is it possible to do so? Is there any source code or the way to decode the transpoder? Please help me. Thanks!!

zleon

Joined: 06 Aug 2005
Posts: 2

06 Aug 2005 16:14 rfid circuit schematics

chentzin can u emai me the RFID schematic and source code to me... I am trying to make my own receiver and reader... thanks

Added after 18 seconds:

chentzin can u emai me the RFID schematic and source code to me... I am trying to make my own receiver and reader... thanks (zleon83(at)hotmail.com)

chentzin

Joined: 28 Jul 2005
Posts: 9

13 Aug 2005 19:24 rfid ic reader

you can download from the link above posted by luben111

zleon

Joined: 06 Aug 2005
Posts: 2

30 Aug 2005 6:36 htrc110 source code

but i cant see any link above???????? Crying or Very sad

volod_ua

Joined: 27 Sep 2005
Posts: 6

01 Oct 2005 23:15 u2270b schematic

Hello.
I have a problem with U2270B and EM-4001 transporder.
Antena I have L=627uH. And build other shematic, work but I don`t have good card code.
In Em-4001 the first 9 - bits is 1, I have this bits but last bits is not good.
In pin U2270 - Output a have f = 0.4~2.4Hz when put card f = 1.54~1.65;
In coil f = 122.5Khz. Use 220nF and 1.5 nf for pin HIPASS,Input.
For decode I use AVR .
Can you help me.