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

Wupadrasta_Santosh

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...


omersiar

Pure SPI Library for 1602 LCD using Shift Register
https://github.com/omersiar/ShiftedLCD

RFID Access Control Project
https://github.com/omersiar/RFID522-Door-Unlock

robwlakes

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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