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Topic: DIY FSK RFID reader with arduino (Read 1 time) previous topic - next topic


I want to know why toroidal inductor is being used in the RFID reader described in the site...
I feel that toroidal inductor wouldn't be much effective  in grasping the changes in electromagnetic field changes...


Pure SPI Library for 1602 LCD using Shift Register

RFID Access Control Project


The coil is just an air wound coil (3.25 inches diameter).  I think a toroid implies that it has some sort of ferro-magnetic core or case (in which case I would agree) but the design has a coil that is big enough to function both as a transmitter of power and also as an antenna to pick up the generated disturbances of the transmitted signal, ie the data being transmitted.
Learning Flute and C++, heading for a meltdown.

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