Consistent 0.0 after boot

mortenfyhn / coffee-scales

⚖️ Scales for brewing coffee ☕

GNU General Public License v3.0

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Closed mortenfyhn closed 9 months ago

mortenfyhn commented 3 years ago

Seems that the HX711 outputs slightly wrong data first. Maybe we can adjust the tare function to wait for it to settle.

untitled

mortenfyhn commented 3 years ago

Maybe we can cheat by having a small deadband around zero.

mortenfyhn commented 3 years ago

Kinda works now.

mortenfyhn commented 1 year ago

Plan:

[ ] Get a log of data from a typical brew
[ ] Then try different filtering techniques until flat parts are completely flat and changing parts change with minimal delay
[ ] Discretize the output to 0.1 g intervals to check jitter

mortenfyhn commented 1 year ago

Right now it's almost consistent 0.0 after tare. The fix must be to tare based on an averaged value instead of based on just one reading.

mortenfyhn commented 1 year ago

Took another startup log, and it seems the first 5-ish measurements (0.3 ish seconds) are off, before it settles.