cybersecurity
wireless
threat-detection
ESP32 RF Trainer
Arduino sketch for ESP32 WROOM that transmits configurable data over a 433MHz RF module.
February 2026
published
About This Project
Arduino sketch for ESP32 WROOM that transmits configurable data over a 433MHz RF module, with a web interface on the ESP32’s WiFi AP so you can control it from a phone. Uses software OOK (no RadioHead); only built-in libraries are required.
Hardware
ESP32 WROOM dev board (e.g. Freenove ESP32 WROOM, DOIT ESP32 DEVKIT V1, NodeMCU-32S).
433MHz transmitter (e.g. 3-pin green PCB). Pins are usually VCC, GND, Data.
Hardware
ESP32 WROOM dev board (e.g. Freenove ESP32 WROOM, DOIT ESP32 DEVKIT V1, NodeMCU-32S).
433MHz transmitter (e.g. 3-pin green PCB). Pins are usually VCC, GND, Data.
Key Features
Configurable payload: Set the text (up to 60 characters) sent over 433MHz.
Burst duration: How long each transmission burst lasts (seconds).
Burst interval: Delay between bursts (milliseconds).
Start/Stop: Start or stop transmission from the web UI.
Project Information
Duration
1 week
Team Size
1
Status
Published
Technologies Used
C++
Platforms
Arduino