I aimed specific questions at the [number~] object, because I wasn’t up on what it really was displaying.
Nevertheless, I tested [sigmund~] in simulations yesterday, and it appeared to be rock solid all the way down to 12 or 11 hertz, and useable certainly still at 10 hertz with minute flutter. At 9 hertz it becomes unstable and at 8 hertz it is unuseable. This was great news. 10 hertz is all the way down at 300 RPM… well below what the car idles at. I can have any signals below 10 hertz simply register as zero for RPM. At 7500 RPM, the hertz value will be 250.
So I went and fired up the MR2 and plugged in my firewire.
It worked so well in fact, that when I compared it side-by-side to my oem Toyota tachometer, it left the oem tacho in the dust for responsiveness and accuracy (minute changes in throttle makes this obvious).
Here is a You Tube video of yesterday’s startup trial:
And a pic :)
Thank you VERY much, all of you, that contributed, answered… It has involved contributions from no fewer than 6 forums to get this all to work out, and various disciplines… You guys simply rock.
Apr 11, 2012 at 6:40pm #226929