Aktueller Inhalt von sghctoma

  1. S

    DIY Telemetrie / Data Acquisition System

    I'm doing it during preprocessing. The Sav-Gol filter can directly output nth derivative, so I do the filtering and velocity calculation in one go. I'm only using the filtered data for the velocity calulation though, travel FFTs and travel histograms are based on the unfiltered samples, because...
  2. S

    DIY Telemetrie / Data Acquisition System

    I think some filtering is always necessary, since any kind of noise, or even just the digital nature of the measurement will be very apparent when you take the first derivative of the data.
  3. S

    DIY Telemetrie / Data Acquisition System

    I'm applying a Savitzky-Golay filter on the data, that might be the source of some discrepancy, but I did not yet compare the velocities, don't know how large the differences are. Yup, I think an external ADC is a good idea. And replacing the jack connectors too; I've tried using them for the...
  4. S

    DIY Telemetrie / Data Acquisition System

    Hi, so, I've downloaded your data and imported one of the sessions into Sufni. You can check it out here: https://sst.sghctoma.com/#/dashboard/112 I was using the fork_mm / shock_mm columns, with the assumption that the bike is a Kavenz VHP16 (you had that bike on one of your UI screenshots)...
  5. S

    DIY Telemetrie / Data Acquisition System

    Yup, Python can be really slow for some things, and I think the piwheels numpy packages are not built with all the optimizations. For some reason creating Bokeh models, especially ColumnDataSources is also slow, at least according to the performance profiling I've done. I do most of the heavy...
  6. S

    DIY Telemetrie / Data Acquisition System

    Yep, the examples are good, as well as the documentation. Clear, and well-organized. Cell reception is a concern, yes. Processing data on a Pi 3 B+ was pretty slow for me, but that will soon change. I hope I can do enough improvement to run even on a Pi Zero, which I could just package into the...
  7. S

    DIY Telemetrie / Data Acquisition System

    Yup, sure, I meant ballpark values when I wrote good values. And I'm trying to search for those ballpark values not necessarily to tune my suspension, but just to see if measurements from my system are somewhere around measurements from other telemetry solutions. Just to make sure I didn't make...
  8. S

    DIY Telemetrie / Data Acquisition System

    Hi everybody, Would it be OK to post here in English? I'm Toma, the author of the Sufni Suspension Telemetry project @Finnito linked here. I don't speak German, but would like to answer some questions in this thread. Apologies if it's not OK. @nollak : Regarding the problem with WiFi and the...
Zurück