hardwareeasy/medium
Trace
hackthebox
Task: GPIO signal capture CSV and Gerber PCB files for an 8×8 LED matrix displaying a message too fast to read. Solution: Trace copper routes in Gerber files to determine GPIO pin mapping, decode column-scanning multiplexed signals (active LOW row data), and reconstruct 42 character bitmaps to reveal the flag.
$ ls tags/ techniques/
gerber_trace_routingled_matrix_demultiplexinggpio_pin_mappingbitmap_font_recognitioncolumn_scan_decodingactive_low_signal_interpretation
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