Telegraph

Project TELEGRAPH (Part 3): Bare Metal, Bit-Banging, and the 4MB Heist

Mar 27, 2026 · 13 min read · arm reverse_engineering electronics telegraph ·

With our custom ESP32 wireless flasher built and tested in Part 2, we finally severed the USB cord. Now it was time to actually run some code on the clock's STM32F105RB.

Project TELEGRAPH (Part 2): Escaping the Cables with a Custom ESP32 Wireless Flasher

Mar 9, 2026 · 4 min read · telegraph electronics reverse_engineering wireless ·

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Project TELEGRAPH (Part 2): Escaping the Cables with a Custom ESP32 Wireless Flasher

Let’s be honest: the reality of hardware reverse engineering usually involves sitting hunched over a cluttered desk, tethered to your target device by a short USB cable, constantly manually resetting the board. I don't have much space on my desk, and I absolutely despise cable clutter.

Project TELEGRAPH (Part 1): Rescuing a $15 LED Matrix from Software Purgatory

Mar 8, 2026 · 4 min read · telegraph MekOps reverse_engineering electronics ·

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Project TELEGRAPH (Part 1): Rescuing a $15 LED Matrix from Software Purgatory

Sometimes the best hardware hacking projects start because you refuse to accept terrible UX.