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klotz: ch55x*

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1. CH55x firmware extractor

   Firmware extractor for CH55x microprocessors. This project details a timing attack to extract firmware from CH55x chips over UART, requiring source code modification and recompilation for tuning.

   2025-12-19 Tags: ch55x, firmware, uart, stm32, github by klotz
2. biemster/3keys_1knob: Custom firmware for a 3-key + rotary encoder macropad (https://hackaday.io/project/189914)

   2024-01-17 Tags: ch552x, macropad, firmware, arduino, ecommerce, github, ch55x, hacks, input, keyboard, 1189:8890 by klotz
3. RGB macropad custom firmware | Hackaday.io

   First time programming still needs a hardware connection to be made between P1.5 and GND, but after that holding the 1st key while connecting USB lands you in the bootloader!

   2024-01-17 Tags: ch55x, macropad, ecommerce, firmware, hacks, input, keyboard, 1189:8890 by klotz

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