EDN

Tutorial: Radio Basics for UHF RFID–Part IV

Passive and semipassive RFID tags do not use a radio transmitter; instead, they use modulation of the reflected power from the tag antenna. Reflection of radio waves from an object has been a subject ...
GitHub

Arduino-RFID-Access-Control-with-Servo-LCD-LEDs-and-Buzzer-using-Arduino---Full-Tutorial

RFID Module: Reads the UID from an RFID tag/card. If the UID matches the authorized UID, access is granted. Ensure the RFID tag/card UID matches the authorized UID in the code. Use the potentiometer ...
GitHub

ESP32, MQTT, RFID tutorial

I recently wrote a German tutorial (https://plantprogrammer.de/esp32-rfid-and-mqtt/) that describes on how to use an ESP to publish UIDs of RFID-tags into an MQTT ...
EDN

Tutorial: Radio Basics for UHF RFID–Part III

A periodic signal that persists indefinitely, without changing its amplitude, frequency, or Phase–a continuous wave (CW) signal–carries no information other than the fact that it is present. In order ...