USB-PD

  • 21st September 2026

Reverse-engineering a $30 USB power meter, and writing it a new brain

reverse engineeringRustfirmwareUSB-PDhardware

How I went from “why won’t this meter do what I want over USB” to a from-scratch replacement firmware that triggers USB-PD, QuickCharge, and Samsung AFC on command.

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    TC66C custom firmware

    Rustfirmwarereverse engineeringUSB-PD

    From-scratch Rust firmware for a $30 USB-C power meter that triggers USB-PD, PPS, QuickCharge, and Samsung AFC on command.

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