Presented below is a simple and cheap 433-Mz RF Sniffer ideal for testing/reverse-engineering most 433-MHz wireless devices. As you can see, the setup is on the Arduino ground with a 433-MHz receiver ...

433 MHz radio signals ... explores using an Arduino to do the job, paired with a RFM210LCF-433D radio receiver module. This setup dumps out data to a computer over serial for decoding.

You start with a standard serial cable containing the TX, RX, DTR, and GND wires. This cable connects the Arduino to the ESP8266 WiFi module. The TX and RX lines are then tapped into.

For starters, you need a pre-wired NFC RFID module ... Arduino Uno. The HSU interface needs only four wires to connect PN532 with Arduino (HSU uses 115200 baud rate), and in some Arduino boards (such ...