[Discussion] Share your projects

[Łukasz Szmigiel]

Constantin ready for release!

Data on the right refreshed once per second.

Data on the chart refreshed once per 6 seconds with an average from those 6 seconds to make the chart smoother. Also, the chart positions dynamically up and down every second (the dot represents current pace / HR).

Two modes available - one for pace, second one for HR (switched with top button).

Designed to make running more constant.

[Thibault B.]

@Łukasz-Szmigiel Very nice! Can’t wait to try it out.

[AYamshanov]

I wanted to share a project/proposal I have been working on recently. I am a fan of both Suunto and Meshtastic (the open-source, off-grid mesh network), and I have been thinking about how powerful it would be to bring them together. I have just posted a proposal on the Meshtastic GitHub.

The goal is to allow users of Suunto watches (and users of other sport/smartwatches if they support the integration) to receive messages & geo-positions from the Mesh-network. Since this is an integration between two different ecosystems, a lot depends on the feedback and interest from the Meshtastic side.

Regardless of the outcome, diving into the logic of how these two systems could talk to each other has been an incredibly fun and exciting experience!

[Hursty]

I Just got my device this last week and was happy to find they just released the Development Environment to make apps.
I ended up selling my Garmin after they release a rucking activity but only for the newest devices.

So now i can build one here. (Right now just Pandolf Calculation) But playing with adding the ability to adjust weight on the phone optionally as well (instead of just as a settings though the phone app)

[Łukasz Szmigiel]

@Thibault-B. Well… I’m still waiting for Suunto to open up an account for me.

[Svenning]

@Łukasz-Szmigiel I’m also waiting for your app.

[Łukasz Szmigiel]

It’s live, babe!

I’m now proudly waiting for all “dude, it sucks / doesn’t work” comments

[SyncBypass]

I have something a little different. I built an android app which can deploy your suuntoplus apps from your phone! Basically you don’t need to worry about sync anymore. You just have your custom watch apps inside some directory on your phone and then send them over whenever you need to. No more need for for a pc / vscode

Works on my Race and I don’t see why it wouldn’t on others. Teste with fea files (remember to select the right built package for your watch). Suunto may at some point change the protocol, but probably not anytime soon. Hope this helps anyone
<removed old link>

Edit. if the app does not connect, make sure you aren’t connected to something else like VS Code for example. The app has few permissions and no internet connection btw

Edit 2. Here’s the repo if you wish to build it yourself. At the top you can see “tree”, which shows the root of the repository where you can find the pre-built binary.

[Łukasz Szmigiel]

@SyncBypass this is pretty cool. Care to share some details on the protocol used to push the s+ app via bt?

[SyncBypass]

@Łukasz-Szmigiel the repo now contains some kind of an explanation. As I don’t understand anything about anything, I simply handed the captured communication to an LLM and had it vibe the app.

[Łukasz Szmigiel]

@SyncBypass cool, I’ll take a look in the repo. Thanks, that’s really clever work you did. It’s amazing what can be done with llms now.

[guderaber]

@skyfi yes, i would be happy to have some collaborator, that may introduce new ideas. https://github.com/aabbeell/suuntopo
reach me out there, as i dont read this very frequently

[Łukasz Szmigiel]

@guderaber your app seems pretty complex on the processing side. Did you test it on the watch alongside other S+ apps? Does it crash other apps?

[AYamshanov]

@SyncBypass Great stuff! Your project actually got me thinking about different ways to interface with the device, and I’ve been experimenting with a web-based approach. The idea was to see if I could use the browser to access the watch directly for quick tasks without any setup.

As a small experiment, I’ve managed to get a basic filesystem viewer working to explore the internal folders: https://wfhub.net/flasher

My long-term goal is to see if it’s possible to build a simple generator for custom watch faces that could be uploaded right from the browser. It’s still very much a “work in progress” and a bit of a research project for me at the moment.

I’m curious to see where your project goes, and I’m still trying to figure out if there’s enough community interest in these kinds of DIY tools to keep pushing further. Anyway, thanks for sharing your progress!

[Łukasz Szmigiel]

@AYamshanov how do you interface with the Vertical 2 via USB?

[Ze Stuart]

@AYamshanov this is great. Nice work! Same for @syncbypass. I’m not convinced Suunto will approve of this work, but having control over my own hardware is really interesting.

[AYamshanov]

@Łukasz-Szmigiel The interface with the Suunto Vertical via USB is a multi-layered process where the SDSApplicationServer (a closed-source native binary) acts as a bridge. High-level clients, such as the VS Code extension, communicate with this server via WebSockets on port 9002 using a JSON-based REST API. The server then translates these JSON requests into an opaque, proprietary TLV binary protocol that is transmitted to the watch over USB HID.

Since the low-level protocol is undocumented, interfacing with the device requires a “blackbox” reverse-engineering approach. By mapping the open-source JavaScript logic from the VS Code extension and capturing the resulting USB traffic via Wireshark, one can correlate JSON inputs with binary outputs. While this is a complex task, leveraging AI significantly accelerates the process of identifying patterns in the hex dumps and automating the decoding of the protocol.

[guderaber]

@Łukasz-Szmigiel I tested it on my race s and it worked although i had to make some adjustments to prevent crashing. But it definitely needs more testing and optimisation

[Łukasz Szmigiel]

@guderaber yeah I’ve learned it’s the hardest part as Suunto doesn’t document the actual hardware limits and it can’t be tested reliably in the simulator.

[Łukasz Szmigiel]

@AYamshanov this is super interesting! Happy hacking!