I have solved the issue with these HX711 ADC boards. With all the HX711 board I have, the E- pin is not connected to GND but should be. Solder a wire between the two or otherwise connect E- to GND. That will make your bed scale a LOT more reliable and way less noisy.
Below is a graph of my load cells. On the left four HX711 board (1 per bed leg with 2 load cells each) but all ungrounded. Around 18:30 I soldered E- to GND for all sensors and connected them. The difference is night and day.
Great topic. I have a question about the load cell and the way you mounted the foot on it. On the second picture it looks like you have to screws for mounting. Did you removed the metal foot part(drilled out) and screwed back the new plastic part?
I Googled a lot , but i canāt find anybody who did replaced the foot part.
Hey!
The load cell is just resting in the 3D printed holder. I have not modified the load cell itself in any way. The plastic part on the load cell is part of the load cell (fastened with two screws). So the leg of the bed is just resting on this plastic part. The sides of 3D printed part is making sure the cell is always under the leg.
Iām another load cell project I replaced this plastic part with my own part that is part of a bigger plate.
I love this!!! I just kept mine really simple though.
The only info I used there was what sensor and where to solder the two small wiresā¦
I used a simple black load mat with an Aqara window sensorā¦ [zigbee].
Yes thatās correct. The battery lasts quite a while. Easy setup but Iām having trouble with mine because over time the mat compresses and no longer registers activity.
This is the one Iām going with ā I have all the parts just have to build it
, but i canāt find anybody who did replaced the foot part.
