Shaking Gauge Needles at Idle

[N2056]

I would like to include this feature in my current project. I have a start using the rocker arm animation, but it needs to fade as the rpm increases. Any advice on how would be appreciated.

 

[tgibson]

Subtract a factor of the RPM from the code used for the rocker arm animation. I.e. as an example let's say the rocker arm animation code needs to vary from the normal value to 0 when the the RPM value varies between 1 and 2500. In other words, when the RPM is 1 you need the rocker arm animation to be multiplied by 1 (shakes a lot). But (for example) when the RPM is 2500 you need the rocker arm animation be multiplied by a value of 0 (doesn't shake at all). So:

RPM is 0 to 2500
So if RPM is 1, rocker arm animation value is animation code * (1 - 1 * 0.0004) = animation variable * 0.9996 (close to normal value).
If RPM is 2500, rocker arm animation value is animation code * (1 - 2500 * 0.0004) = 0

So the rocker arm animation in this case should be [animation code] * (1 - RPM * 0.0004)

In RPN this would be something like

...
if{ (A:GENERAL ENG RPM:1,degrees per second) (E:ABSOLUTE TIME, second) * 360 % 3.6 / 1 (A:GENERAL ENG RPM:1, rpm) - 0.0004 * * }
...

This has not been tested.

Hope this helps,

 

[N2056]

Thanks Tom. The concept makes sense. I tried the code but it is not working in that I have no movement at all. I'm playing around with it now.