Design a better filter

[mortenfyhn]

Use the logged data I have.

Spec / goal:

• No jitter during steady state
• Very quick response when adding weight
• No overshoot

Maybe bias estimation? In the log data, after finishing the pour, the data falls from 200.45 to 198.98 over approx 90 seconds. But maybe that's just evaporation!?

• [x] Take another log, maybe 10 minutes, with nothing on the scales.
• [ ] Re-implement the current filtering and run on log data to assess
• [ ] Implement in such a way that I can use the same code for filtering on the arduino as for assessing?

[mortenfyhn]

The current one, after I fixed the hysteresis, is pretty good to be honest, it fulfills the spec above.