Where to buy MSP430 antenna and what type of antenna should use?

Hi Richard,

I moved this to the RFID forum since this looks like it is more of a question about this RFID EVM and RF aspects, than about the MSP430. You should be able to get better help there.

Regards,

Katie

Richard - 

The MRD2 comes with onboard 47uH low Q antenna - if you want to make your own or specify one to a manufacturer of your choosing, based on your requirements, please see section 5 here:

http://www.ti.com/lit/ug/scbu049/scbu049.pdf

and attached, slides 34-38

7357.LF Antenna Design.pdf

Dear Katie,

Thanks for your help.

Dear Josh,

Noted with thanks. May I know where can I getting antenna vendor. I only need small quantity at this moment for my trial out. If can get at internet is even better.

Richard - 

how many and what size do you need? what tag are you using? what read range are you expecting? 

you see, normally folks make their own coils for the MRD1 or MRD2 now - each application is usually so different - it would be difficult for a vendor to anticipate and stock a particular size - but if you can give me some idea about the answers to the questions above, i can ask around for you.  

Dear Katie,

Is this MRD2EVM kit support Windows 8? Look like NO new device notification from Windows after the board is insert into USB port. USB driver software (scbc010) also cannot install.

Dear Josh,

We are using tag, RI-TRP-DR2B, this tag is EOL, any replacement model?

What is the current MRD2EVM kit antenna wave or tag sensing distance?

Richard,

I am sorry but TI does not offer a signed MRD2 driver software for Win8 at the moment.

Please use the workaround and setup windows to accept an unsigned driver.

You will find a lot of guidelines how to intall an unsigned driver software on the WEB.

For the MRD2 this is not a problem to do that, because TI provides no driver software, but just an .INF file that points windows to its build in virtual COM port driver.

Regards,

Helfried

Dear Helfried,

Thanks for your advise.

My PC operate at Win 8.1 Pro and I had download the USB driver.

When I right click on mouse and select install for file MicroreaderII.inf, error message prompt "The INF file you selected does not support this method of installation" "The syntax of the INF is invalid"

How? Please advise.

Is this MDR2 only work at PC with OS Win7 and below?

Many thanks in advance.

Richard,

the best way to install the driver is using the Device Manager found under

Control Panel -> System > Device Manager.

Please follow the instructions for installing an unsigned driver first. Then insert the the Microreader and go to the Device Manager. In the Device Manager the Microreader should show up with an exclamation mark. RIght click this device and do an update driver. Browse to the folder that contains the MicroreeaderII.inf file.

If the installation still fails you can check the windows log file for driver installation which can be found in

C:\Windows\inf\setupapi.dev.log

Best regards,

Helfried

Dear,

I need help on Microreader RI-STU-MRD2 read trigger info.

1) When I trigger switch for RDEN, we only able to read page 1 data, if I would like to read page 2 or any page we like, how?

2) If RDEN cannot work out what we need, can we use SIG_IN_0 or pin 13 to perform above job. If possible, how the wiring should do for this input point, any wiring circuit for our reference.

 Many thanks.

Richard,

the RDEN pin has two functions. When the reader is idle and you pull the pin high for 100us the reader will execute a "Charge only Read" which means only a 50ms burst is send and a transponder like the RO type will respond to that.

If you would like to send a command, like "read page 1" to a transponder you can set RDEN high then send the command. When you set RDEN low the last received command will be executed.

With the SIG_IN_0 pin it is not possible to trigger the reader. Only the status of this pin can be read.

Maybe you can explain what functionality you need and I can check if there is a solution for that.

Best regards,

Helfried