Arduino IDE version: 1.8.1 RFID LIBRARY - GitHub - miguelbalboa/rfid: Arduino RFID Library for MFRC522 MFRC522 Library version: 1.3.6 Arduino device: Uno MFRC522 device: _RC522 Hey there, I've been stuck on this situation for quite a while and any help is appreciated. I'm trying to connect my …

Sorry! Power is at the 3.3v pin and GND is connected to both.

Here is a better reference. [Screen Shot 2018-01-09 at 4.25.14 PM.png]

steve1234: Sorry! Power is at the 3.3v pin and GND is connected to both. And you are quite happy connecting 5V signals to a 3V3 board?

spycatcher2k: Can you post a link to where you bought the module please. https://www.creatroninc.com/product/mfrc522-rfid-nfc-starter-kit-1356mhz/

Grumpy_Mike: And you are quite happy connecting 5V signals to a 3V3 board? I'm connecting it to 3.3v on the uno ...? Sorry, I'm still in the learning process.

spycatcher2k: Did you connect pins 10 - 13 directly? or through a level converter? If directly, then you MAY have blown your chip. I figured out my problem. I resoldered the pin headers and it worked! Thanks for your help anyway.

steve1234: I'm connecting it to 3.3v on the uno ...? But the signals out of the Uno are 5V. So you have a device powered by 3V3 being fed several signals of 5V! Putting signals into a chip that exceed that chip's power supply by 0.5V is a great way to destroy a chip. I figured out my problem. …

Arduino & RFID RC522 - Communication Failure

Projects General Guidance

mans123 August 5, 2018, 9:49am 12

is this tutorial good bc i dont want to blow my chip up?

Badge et carte non lue par le module RFID 522

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Arduino & RFID RC522 - Communication Failure

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