SebastianOberschwendtner / OTP22_oScale

Weighing scale for brewing espresso. Measures weight and times the brew. It can also calculate ratios.

GNU General Public License v3.0

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Improve the Filter for the ADC Data #2

Open SebastianOberschwendtner opened 3 years ago

SebastianOberschwendtner commented 3 years ago

Current Behavior:

The current filter is simple PT1 filter with a time constant of 0.5s.

Expected Behavior:

The filter should be improved to settle faster and also give the derivative of the weight measurement to get the flow rate. Use the same filter as used in OTP-15 oVaro.

SebastianOberschwendtner commented 3 years ago

This issue is split in two tasks:

[x] Implement generic IIR filters in filter8.
[ ] Add a optimized filter type to the scale and test it.