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Forum Thread Details
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  • raspberry
  • pi
  • rfid
  • raspberry_pi
  • grove
  • piface
Related

Raspberry pi RFID sensor

Former Member
Former Member over 11 years ago

        Hello all, It's my first time posting in this website and i would like to know for my school project, if it's possible to connect a grove RFID sensor (this one: Grove - 125KHz RFID Reader - Wiki)  to a raspberry pi model B with the help of a piface digital board. I know it would be soon a GrovePi board but if it can be possible to link the sensor with piface it would be interesting to know how to.  It's my first time using components like raspberry pi so basically i know how to code with python and install modules on the raspberry but i have no idea how to connect piface to the RFID reader and if it can work. Technically, i am getting started at electronics but my teachers can help me (but i have to search informations before) so if you can answer to my question or suggest some tips it would be really geat and i would be really grateful !

 

Thank you for your future replies.

 

PS: I am sorry if I make grammar errors, English is not my primary language

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  • Former Member
    0 Former Member over 11 years ago

    hey its my first time to

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  • Former Member
    0 Former Member over 11 years ago in reply to Former Member

    You don't answer his question at all...-_-

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  • perz
    0 perz over 11 years ago

    The Groove use serial interface so you can use GPIO UART. But NOTICE that Raspberry use 3.0 Volt and Grove use 5.0 volt as standard so you have to transform 5V->3V and 3V->5V . Since it is quite a low baudrate it might work with just a voltdivision from 5->3   .

    For Ex GPIO.UART.RX-   |   -  20k- Grove.Tx 

    ....................................30k

    .................................... |

    .....................................GND

     

    GPIO.UART.Tx------------Grove,Rx

     

    GPIO.5V-------------------Grove.V

    GPIO.GND---------------Grove.GND

    This might work But be sure to have the 30k resistors connected to ground.

    Good Luck.

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  • Former Member
    0 Former Member over 11 years ago in reply to perz

    Ok, but the R-Pi ports are not available ! We have something like this (because we needs PiFace in order to control another thing ^^) : http://technology-guerilla.de/wp-content/uploads/2012/12/PiAndInterface.png

    and we want to add this : http://www.seeedstudio.com/wiki/Grove_-_125KHz_RFID_Reader

    Thank you!

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