During this last week we have put together the final loose ends of the project. Last time we were still stuck with our Sun SPOT running and measuring on one laptop while our software interface was running on another one. It turned out to be quite a hassle to get everything working on one station. The main problem was off course software versions, libraries and more of this kind of stuff.
The software we eventually used was taken from one of the Sun SPOT example files, namely the "Telemetry on Desktop". We used the acceleration sensor that was on board of the Sun SPOT and exported the resulting vector. In this way we didn't have to care about the orientation of the Sun SPOT when you connect it to your leg. Following this we set a certain threshold for the amplitude and the duration of the signal so that we could distinguish between steps. (see also this YouTube tutorial of the Telemetry example)
If we had more time we could have also calculated more complex data such as speed, force and maybe distinct between walking, running and jumping. Sadly enough, time did not allow us to do this.
When it comes to our iPhone emulator, Jemerie put a lot of work into making this lifelike and realistic. The best part, in my opinion is that it looks so much like the initial designs that we made in our powerpoint from last time.
The final result is a functional working prototype that has a full audio and visual feedback mechanism on a computer and has a wireless range of about 20 meters from the base station.
As far as the group-work is concerned I am very satisfied with this result as well. Because we have divided the work amongst ourselves and tried to maximally benefit of each others strengths.
I look forward to present our result and hear the feedback and comments that our audience (online or offline) might have!
Check out the result on the Fun Shoe website!
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