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hx711 weight sensor

Problems building an HX711 scale with a Wemos D1 mini and Tasmota

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I have been trying for several days now to build a weight scale using several online guides and using for software the Tasmota HX711 integration on a D1 wemos mini V:4. My main guide is this video.

I have tried several different wirings.

Every time I change wiring I check all the wiring several times with a multimeter. I know my resistances between A- and A+ is 2 k ohms, the same as E+ and E-.

Calibration with Tasmota (sensor34 2 #ref_Weight) fails every time.

In this wiring diagram according to many articles, including instructables:

enter image description here

I get the following behavior on sensor reading(‘status 8’) as calibration fails:

Scale empty : HX711″:{“Weight”:0,”WeightRaw”:2722,”AbsRaw”:326727} Add 5 kg to the scale : “HX711”:{“Weight”:0,”WeightRaw”:1766,”AbsRaw”:211991}

Does anyone have any idea what I am doing wrong, or what the right wiring should be? I’ve been banging my head against a brick wall changing wires for 2 weeks now.

At some point, I don’t know how (I lost the wiring) I was getting the right weight (5kg) just reversed (when I was adding it the reading was -4980.) Then I changed A+ and A- and everything collapsed.

Here are some pictures of the actual wiring and project:

enter image description here
enter image description here
enter image description here

*Edit

Here are some HX711 shematics from this source:

enter image description here

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edited 11 hours ago

JRE's user avatar

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JRE

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josepheoff.github.io

Electronics hobbyist. I torture electrons for fun, not profit.
If you have too much time to kill and don’t know what else to do, stop by and read the reports of my experiments.

JRE

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asked 13 hours ago

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Feronimus Sol

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