Taste The Code

Building a Standalone RFID Door Lock with the RC522 and an ESP32

Building a standalone RFID door lock with the RC522 and an ESP32 that learns and forgets cards using a single push button.

Aug 31, 2026 — 13 mins read

RFID Access Control: How to Create a Smart Usage-Limited System with RYRR20I_DE and Mifare Ultralight Tags

I created an access system that can track how many times a card is used and once credits are exhausted, it can limit access until topped up.

Apr 05, 2024 — 9 mins read

I made my workshop safer for my kids!

I made a safety switch with Arduino and RFID that cuts power to the outlets in my workshop when I'm not in the workshop.

Sep 24, 2022 — 2 mins read