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dankamongmen / dankdryer

firmware for the world's best filament dryer
Apache License 2.0
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sample load cell and provide calibration #18

Open dankamongmen opened 2 weeks ago

dankamongmen commented 2 weeks ago

we need sample the load cell to get weight information. getting good absolute numbers requires calibration. i'm not sure about deltas. i think we might need do temperature compensation, also. this all ought be done through the HX711.

dankamongmen commented 17 hours ago

i've written the code to do this, but we're not yet getting reliable measurements. i'm pretty sure the load cell is properly deployed. the datasheet suggests powering the HX711 with 5V, which we're going to need for the LM35 anyway, so let's go ahead and get a 5V bus (can we use the 5V pin on the ESP32-S3? they're pretty low current devices, microamps both). i got a quality sparkfun HX711 and want to test with that.