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markreds81 / RFID

Arduino library to support Melexis MLX90109 RFID tag reader ICs
GNU General Public License v3.0
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RFID Tags? #2

Open kriswiner opened 1 year ago

kriswiner commented 1 year ago

Which RFID tags did you use to test this? I tried these but I can't get any output on the serial monitor...If you can share a link to tags that work with your sketch I would ppreciate it greatly, thanks!

markreds81 commented 1 year ago

These ones works with my application. They are 125 Khz desfire 40 bits.

kriswiner commented 1 year ago

Great, thanks! Any idea where I could buy some to test?

On Fri, Apr 7, 2023 at 1:00 PM Mark Reds @.***> wrote:

These ones https://www.cemitonline.com/en/products/electronic-keys/ works with my application. They are 125 Khz desfire 40 bits.

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markreds81 commented 1 year ago

Yes, sure. Write to info@cemitonline.com

kriswiner commented 1 year ago

Thanks. One last question if I might:

Is the MLX90109 finicky in this regard, meaning are there only certain types of 125 kHZ RFID tags it can read?

I don't know much about LF RFID (obviously) but I am surprised there are 125 kHz RFID tags the MLX90109 evl kit cannot read....do you know of a link where this is discussed?

On Fri, Apr 7, 2023 at 2:11 PM Mark Reds @.***> wrote:

Yes, sure. Write to @.***

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markreds81 commented 1 year ago

As far as I know, I don't see such a thing but I'm not an expert. Have you already took a read on the module documentation?

kriswiner commented 1 year ago

Yes, I have read all of the MLX90109 and EVK90109 documents many times. Running your basic code and connecting the EVK90109 properly to a MCU is not that hard to do. It should work but it doesn't. I am trying to figure out why not. If only a small number of 125 kHz RFID tags will work with the MLX90109, then this would explain my results.

I only have one type of RFID tag at the moment. I want to avoid buying several types just to find only certain ones will work or none of them will work. I am surprised that any of them do not work....

Anyway, thanks for your help.

On Sat, Apr 8, 2023 at 1:22 AM Mark Reds @.***> wrote:

As far as I know, I don't see such a thing but I'm not an expert. Have you already took a read on the module documentation?

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markreds81 commented 10 months ago

Hi @kriswiner, we have encoutered the same problem in these days because we changed our tag supplier. After further investigations we think it depends from tag's antenna geometry. In our tests with different tags it change the minimum distance needed by the reader to decode the tag's ID. We are continuing our internal tests.