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Security Access using MFRC522 RFID Reader with Arduino

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Security Access using MFRC522 RFID Reader with Arduino ===================================================================== This blog post shows a simple example on how to use the MFRC522 RFID reader. I’ll do a quick overview of the specifications and demonstrate a project example using an Arduino. Description RFID means radio-frequency identification. RFID uses electromagnetic fields to transfer data over short distances. RFID is useful to identify people, to make transactions, etc… You can use an RFID system to open a door. For example, only the person with the right information on his card is allowed to enter. An RFID system uses: tags  attached to the object to be identified, in this example we have a keychain and an electromagnetic card. Each tag has his own identification (UID). two-way radio transmitter-receiver, the  reader,  that send a signal to the tag and read its response. Specifications Input voltage: 3.3V Frequency:...
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Arduino ​Obstacle Avoiding Robot Ardunio Computer

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