Build a DIY Open-Source Flipper Zero Using a ESP32-DIV

9:00 am August 22, 2026 By Julian Horsey

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The ESP32-DIV is an open source platform designed for wireless experimentation and signal analysis, built on the ESP32 and ESP32-S3 microcontrollers. It supports features such as Wi-Fi, Bluetooth, RFID, NFC, sub-GHz, and IR communication. According to CiferTech, the platform’s modular hardware design includes components like a TFT touchscreen, IP5306 battery management and WS2812 NeoPixel LEDs. With options ranging from the beginner-friendly CYD board to the advanced ESP32-S3 variant, the ESP32-DIV accommodates a wide range of user needs and technical expertise.

Explore how to perform tasks like firmware flashing, wireless network testing and signal manipulation using the ESP32-DIV. Learn about its firmware update methods, including a browser-based Web Flasher for ease of use and Arduino IDE for advanced customization. Discover how its GPS functionality supports applications such as war driving and satellite diagnostics and how its RFID and NFC capabilities enable cloning, decoding and security testing.

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