Advance of the work, new draft:
I´m using this formula now for the steps needle:
(clamp(#ZSC#,0,10000) prevents outscale when users walk over 10k steps.
(rand(1,2)sin(#DWE#10)) is the variation, sin for the frequency and rand for the ampplitude (if you wanna just to swing, replace rand (1,2) for a constant).
Similar without the clamp for the batt needle...
Also, now I´m using this formula in transparency for the pulsating bright in the numbers
Next step of the work, add the interpAccel to the needles formula, or split the animation in two layers: one 0-2 seconds from DIM with interpAccel and the other starting in 2 seconds with the above formula