Peddling in place isn’t the most exciting pastime, so it’s no surprise that modern technology is being used to make the in-home biking experience a bit more interactive. With a stand on the rear wheel providing resistance, and a movable steering plate under the front to read the handlebar angle, you can now use your standard bike as the “controller” in a virtual environment provided by software such as Zwift.
[Keith Wakeham] wanted to take a closer look at how Zwift communicated with his Sterzo steering device, and it turned into a pretty epic bout of exploration and reverse engineering. As the video after the break shows, he didn’t just go from sniffing the device’s proprietary Bluetooth Low Energy (BLE) communications protocol to figuring out how to emulate it in software so you could roll your own Zwift peripheral. He also tore the device apart, pulled the firmware from its microcontroller, and postulated how you could build your own low-cost clone device that would work with the existing software.
Even if you have absolutely zero interest in virtual biking, the video [Keith] has put together for this project is really a must watch. Have you ever wanted to sniff and reverse engineer BLE communications? Looking for a real-world example of pulling the firmware off of a consumer device? Maybe in the market for some tips on how to identify unknown ICs on a board? All of that, and quite a bit more, is covered in this nearly hour long hacking tour de force.
On the other hand, if you are interested in adding your own hardware to Zwift, then this look at getting an unsupported stationary bike working with it should be useful.
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