It is a classic Hackaday situation. You have an Egret GT E-scooter. It has a screen that shows the usual dash stats, but that led to an annoyance. You could accidentally enter firmware update mode and, from there, enter operational mode without the security PIN. [Ben] couldn’t let that stand, so he reverse-engineered the protocol and rewrote the firmware in Rust. As he put it, “… because I have to break… everything I own…” We get it.

The mobile app was useful for some basic info, since sniffing Bluetooth is fairly easy and analyzing mobile code is, more or less, straightforward. Analysis revealed some data that doesn’t show on the display and that several things are sent back to home base tagged with the scooter’s unique ID — another reason to gut the existing firmware.

Internally, the scooter uses the CAN Bus, so out came the oscilloscope and a homebrew CAN decoder.  Surprisingly, the CAN bus is accessible on the USB-C port’s data pins. Officially, the port is only for charging phones, so you have to wonder what your phone makes of the alien signals on the data pins when it is charging.

Firmware updates actually come in at least three flavors: display, input panel, and main controller. Reverse engineering the firmware update process was crucial to installing the new firmware.

If you own a similar scooter, this post is a goldmine. If you don’t, it is still a very detailed breakdown of a reverse-engineering workflow, and you can apply many of the tools and techniques to your next project.

Of course, another option is to just keep the scooter and replace the brains. If you want to learn more about reverse engineering, there are literally dozens of Hackaday posts to help you get started.

The controversy highlights ongoing challenges in VAR's interpretation of offside rules, impacting trust in officiating and game outcomes.

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Napoli's victory could boost team morale and momentum, while Bologna faces mounting pressure to avoid relegation amid early struggles.

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The match highlights ongoing issues with VAR transparency, underscoring the need for clearer real-time communication to enhance fan understanding.

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City's resilience and tactical adaptability highlight their championship potential, while United's missed opportunities underscore their inconsistency.

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Haaland's rapid scoring prowess in derbies underscores a shifting power dynamic in Manchester, highlighting City's growing dominance.

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Barcelona's strong start under Flick highlights their title ambitions, but defensive lapses could pose challenges in maintaining dominance.

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Barcelona's dominant start under Flick sets a high benchmark, intensifying expectations for sustained success in La Liga and Europe.

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Tielemans' dynamic playmaking and endurance could redefine United's midfield synergy, enhancing both defensive stability and offensive creativity.

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Valencia's leadership overhaul highlights ongoing instability, risking further disruption and challenges in achieving long-term success.

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Barcelona's reliance on La Masia talent ensures sustained success and competitive edge, highlighting the club's strategic youth development focus.

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Jimenez's late-game impact boosts Wolves' promotion hopes, highlighting the critical role of experienced players in high-stakes matches.

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Coventry's struggle highlights the challenges of adapting to Premier League demands after a long absence, impacting team morale and strategy.

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Tottenham's scoring drought highlights the critical need for improved decision-making and composure in high-pressure match situations.

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Fusion startups are inking defense-related deals, reigniting the relationship between fusion and national security that might have gone dormant, but never completely disappeared.

There is something wrong with the tractor. The water-in-fuel sensor, a small device embedded in the John Deere machine that monitors the integrity of its diesel engine, is disconnected. And I’ve got to fix it.

I’m not a mechanic or a farmer. I’m poking at a laptop at John Deere’s corporate office in Santa Clara, California. There’s a cable connecting the computer to a 5130ML tractor sitting on the grass nearby. A bright red notification sits on the screen, telling me something is wrong. I type in a question and the software pulls up instructions and a few images from the user manual that matches the serial number of the machine.

Credit: Boone Ashworth

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Atletico Madrid's strategic loan of Jonathan David could bolster their attack, offering flexibility and financial prudence amid squad challenges.

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These bird feeders come with cameras and connected apps to let you see and learn about the birds in your neighborhood.

The U.S. Army Corps of Engineers has finished dismantling the SM-1 nuclear power plant at Fort Belvoir, Virginia, the Army’s first nuclear reactor and the first facility in the country to send nuclear-generated electricity into the commercial power grid. The Corps’ Baltimore District completed the last field work this year, closing out a project that […]

The U.S. Army is testing two rival versions of a new digital command network by putting them in the hands of soldiers in two active-duty divisions at once, and the service’s testing command says it can now judge how each performs within one to two weeks of a field exercise ending, down from the months […]