ark15
Posts: 3
Joined: Sat Feb 18, 2017 11:46 pm
Location: Portugal

Build a RFID Reader

Sun Feb 19, 2017 12:15 am

Hi,
i'm thinking on make a project but i am some doubts on finding the specific hardware.
With the raspberry i want to create a RFID reader. (not a simple reader). A reader able to read multiples tags in simultaneously to a distance until 2 meters (or more).
Yours know some specific hardware able to make this and that is compatible with raspberry?

P.S: i want build the reader. i not want to buy a reader already fully completed.

jim2007
Posts: 9
Joined: Tue Jan 17, 2017 1:46 am
Location: Switzerland
Contact: Website

Re: Build a RFID Reader

Sun Feb 19, 2017 1:32 am

Well there are plenty of starter kits on the market that includes the bits and bobs you need to get started on understanding the techniques. But you need to understanding that stationary proximity to the reader is what helps you identify the card to read... so trying to read multiple cards from a distance of 2M simultaneously is unlikely to happen.

ark15
Posts: 3
Joined: Sat Feb 18, 2017 11:46 pm
Location: Portugal

Re: Build a RFID Reader

Sun Feb 19, 2017 12:02 pm

jim2007 wrote:Well there are plenty of starter kits on the market that includes the bits and bobs you need to get started on understanding the techniques. But you need to understanding that stationary proximity to the reader is what helps you identify the card to read... so trying to read multiple cards from a distance of 2M simultaneously is unlikely to happen.
With UHF RFID reader i can read the long range or i'm wrong?

for example :
http://store.cutedigi.com/cottonwood-tt ... /#aid=6213

this model can read tags on a distance between 1 to 6 meters.

HiroProtagonist
Posts: 212
Joined: Sat Jun 29, 2013 9:45 am

Re: Build a RFID Reader

Sun Feb 19, 2017 10:00 pm

Yes, you can read UHF tags at a distance with multiple tags in the field concurrently. Disambiguating can be fun but is doable.

jim2007
Posts: 9
Joined: Tue Jan 17, 2017 1:46 am
Location: Switzerland
Contact: Website

Re: Build a RFID Reader

Mon Feb 20, 2017 1:25 am

ark15 wrote:
jim2007 wrote: this model can read tags on a distance between 1 to 6 meters.
Yes the hardware capability is there, but you are lacking context to make sense of the random bytes you are picking up? The further you are from the reader the more context you need to make reliable reads.

ark15
Posts: 3
Joined: Sat Feb 18, 2017 11:46 pm
Location: Portugal

Re: Build a RFID Reader

Mon Feb 20, 2017 9:22 am

jim2007 wrote:
ark15 wrote:
jim2007 wrote: this model can read tags on a distance between 1 to 6 meters.
Yes the hardware capability is there, but you are lacking context to make sense of the random bytes you are picking up? The further you are from the reader the more context you need to make reliable reads.
Sorry, i didn't understand. You can be more specific.

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