
Currently using these RC522 sensors with NodeMCU ECP8266, programming with Arduino IDE. Unit 1 worked well and worked with all cards/fobs provided. The 2nd unit did not read the maps. The power light on the sensor is on, but I can't get any readings. Scoured the internet with tests leading me to believe it was a scam. Would be a good buy if both worked.

π Ultimate BBC Micro bit Sensor Starter Kit: Keyestudio 37-in-1 Box with Tutorial, Compatible with V1.5 & V2, Gift for Kids and Adults (Microbit Board Not Included)
11 Review

GeeekPi Raspberry Pi Cluster Case with Cooling Fan and Heatsink for Pi 4 Model B, 3 Model B+ & 3/2 Model B
11 Review

Gikfun Screw Shield Expansion Board: Enhance Arduino UNO R3 with the EK7007 Add-On
11 Review

LAFVIN Super Starter Kit for Arduino R3 Mega2560 Mega328 Nano with Detailed Tutorial - Compatible with Arduino IDE
11 Review

MacBook Retina 13-inch (A1425, A1502) and π© 15-inch (A1398) Bottom Case Screw Set with Pentalobe Screwdriver
11 Review

M.2 Screw Kit: Easy Mounting for NVMe SSDs on ASUS Motherboards
19 Review

uxcell 3.5" HDD Screw Black 200pcs for Computer PC Case - Flat Phillips Head - 6#-32 - Hard Drive Fasteners
10 Review

π₯οΈ Helifouner 450-Piece Computer Standoffs Spacer Screws Kit: Ideal for Hard Drive, Motherboard, Fan, Power Graphics & Computer Cases
10 Review