Motorcycle rally racing is a high-speed, exciting, off-road motorsport that involves zipping across all types of terrain on two wheels. While riding, it’s extremely important for riders to know what’s coming up next — turns, straightaways, stream crossings, the list goes on. Generally, this is handled by a roadbook — a paper scroll that has diagrams of each turn or course checkpoint, along with the distances between them and any other pertinent information. Of course, this needs to be paired with a readout that tells you how far you’ve traveled since the last waypoint so you’re not just guessing. This readout usually takes the form of a rally computer, a device that can display speed, distance traveled, and course heading (and some of the fancier ones have even more data available).
A roadbook with commercially-available rally computers
” data-medium-file=”https://hackaday.com/wp-content/uploads/2021/11/roadbook.png?w=358″ data-large-file=”https://hackaday.com/wp-content/uploads/2021/11/roadbook.png?w=448″ loading=”lazy” src=”https://hackaday.com/wp-content/uploads/2021/11/roadbook.png?w=358″ alt=”” width=”242″ height=”270″ srcset=”https://hackaday.com/wp-content/uploads/2021/11/roadbook.png 448w, https://hackaday.com/wp-content/uploads/2021/11/roadbook.png?resize=224,250 224w, https://hackaday.com/wp-content/uploads/2021/11/roadbook.png?resize=358,400 358w” sizes=”(max-width: 242px) 100vw, 242px”>
Frustrated with the lackluster interface and high cost associated with most rally computers on the market, [Matias Godoy] designed his own back in 2017, and was quick to realize he had a potential product. After several iterations he brought his idea to market with a small initial run, which sold out in a few hours!
He then took some time to reflect on the successful campaign. He decided that rather than continue to churn out units, he would open-source the design to make it available to everybody and see what the community could come up with. He published all of his design files to GitHub, and wrote up a wonderful blog post documenting the entire design process, from inspiration and early prototypes to his decision to go open source.
[Matias]’s project, the Open Rally Computer (formerly the Baja Pro) packages neatly in a CNC-machined case and features a nice high-visibility LCD display, a built-in GPS receiver, and an ergonomic handlebar-mounted remote. The data is crunched by an ESP32 microcontroller, which also allows for WiFi-enabled OTA updates. The end result is a beautiful and useful device that was clearly designed with great care. Love the idea but not a rally racer? If street bikes are more your thing then fear not because there’s an open source digital dashboard out there for you too.
Source:: Hackaday