Currently, I use a Google Chart to image my sonar sweep onto the web control page ..... once the scan has completed... yeah...Too little too late.
I'm going to embark on coding the HTML5/Jscript tonight if nothing exists that I can pilfer.. .er ... borrow.
What I'm looking for is a scan that takes "angle,distance" pairs, and maps them onto a HTML5 canvas (of course removing previous one for that relative angle) and then doing a "lineto(x,y)" from the previous one.
I *have* seen several demos for audio "ping" demos, but not with the radar style sweep that I would like to employ...
If you have written, used, seen, or heard about somethin in the public domain... please let me know.
Either way, I will post what I come up with, here.
Not quite the language you wanted but…
Here is a Processing sketch that I use all the time. Sure, it’s java-ish processing, not exactly what you wanted but should point your in the right direction and or should be easy to translate.
http://luckylarry.co.uk/arduino-projects/arduino-processing-make-a-radar-screen-to-visualise-sensor-data-from-srf-05-part-2-visualising-the-data/
Thats very cool, much better
Thats very cool, much better than my first attempt, i think i’ll need to update now. This was my attempt http://youtu.be/wdGDXjKDKpw
Very nice! Ok… I’ll be pilfering pieces for sure! Thx!
Very similar to some of the code I’ve already written… Polar to Cartesian mapping is pretty well documented… however I really like your concept of averaging consecutive sweeps and fading away the old trace…
I’ll repost my HTML5 canvas code with sample data tonight.
Greatly appreciated Chris.
