suggestion to buy rfid chip

Go To Last Post
7 posts / 0 new
Author
Message
#1
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

hi

I have this project that there is a gate that alot of the car go through it one at the time.

 I need RFID Chip that can detect passive or active tag with a range of 5 to 10 meters or longer for detecting those car tag and decide to allow them or not.

please help me find high range RFID Reader Chip that can do that

i want to use atmega32 (if u have any suggestion on which mcu to use please tell me)

thanks allot 

Last Edited: Tue. Mar 6, 2018 - 11:44 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

This has nothing to do with AVR - an RFID chip neither knows nor cares what microcontroller you use.

 

You've not going to get passive RFID at 5-10 metres - you'll need active for that.

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillatorhttps://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

do u know any rfid chip that is easy to use and relaiable?

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Are you planning to make your own tags/transponders, or buy ready-made?

 

 

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillatorhttps://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

i want make my own

what u think about UCODE DNA>?

  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

It's your project - what do you think?

 

You know your project requirements; you have the documentation for that product - so how do they line-up?

 

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillatorhttps://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 1

Your project while ambitious is not going to be cost effective(cheap) to build.  in a former life I commissioned a long range RFID vehicle access control system for one of the worlds largest Re-Insurers and the 'reader' for the vehicle tags was anything but discreet, or inexpensive.  The unit was about 50cm x 50cm and cost about $3700.00usd.  These transponders are highly intelligent devices that can output RS-232, RS-485, Weigand, or current loop depending on the system requirements.  They are also capable of having their sense pattern 'tuned' to cover a specific area.  The "Tags" that were adhered to the inside of the windscreen were about $35.00usd each because the Re-Insurer bought over 2,000 of them.

 

In your case you will have to design the PCB, carefully lay out the antenna write the firmware etc. for both the transponder AND the Tag.  The Antenna layout for something like this is critical for optimal performance and usually an expert in high frequency design does this sort of things.

 

If the intent is a commercial product, I would suggest you hire experts in this field to assist you.  Just expect a hefty invoice when its all said and done.  Or simply purchase off the shelf components to do the job.

 

Not trying to discourage you.  Just letting you know what challenges you are going to face.

 

Jim

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user