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RFID Reader (125Khz) - Serial TTL

RFID Reader (125Khz) - Serial TTL

The rhydoLABZ RFID reader reads EM4100 family transponder tags that are brought in proximity to the reader and output...
Rs 950

By Brijesh Singh on
It's not working with Arduino. Whenever I connect arduino USB to PC, the modules power goes off.
It is only working with USB-TTL converter.
My Arduino connections are as follows:

Arduino Rx --_ Module Tx
Arduino +5 --_ Module 5V
Arduino GND --_ Module GND
Also tried 0.1 uF cap b/w GND and Power pin of Arduino

If I uses external 5v power for module makes GND common for all Arduino,Module,External Power source, Modules's power LED keeps on glowing. But at same time when I connect my arduino to
PC, the modules power goes off.

Please help.
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