espeasy HX711 with 4x 2T load cell

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acidsubway
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Joined: 02 Jan 2021, 16:44

espeasy HX711 with 4x 2T load cell

#1 Post by acidsubway » 28 Feb 2021, 21:32

hello all,

I am planning to put my pellet bunker for my heating system on weighing cells so that I can track consumption.
I would connect them as I have often seen them on the net.
How do i connect these cells correctly to the hx711 module?
how do i calibrate the maximum weight? i don't have 2t per cell as a weight in the house. Can you please help me to understand this?
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my LoadCell
my LoadCell
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Ath
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Joined: 10 Jun 2018, 12:06
Location: NL

Re: espeasy HX711 with 4x 2T load cell

#2 Post by Ath » 17 Apr 2021, 11:40

acidsubway wrote: 28 Feb 2021, 21:32 How do i connect these cells correctly to the hx711 module?
You already answered that yourself, just follow the wiring schema, and optionally instructions on the internet if needed. I can only assume you already have some experience in soldering electronics, as that seems to be required.
acidsubway wrote: 28 Feb 2021, 21:32 how do i calibrate the maximum weight? i don't have 2t per cell as a weight in the house. Can you please help me to understand this?
Calibrating is done on the ESPEasy Devices page for the task you add. You will need a 'test' .bin file, as that includes the HX711 plugin.
You enable the 2 point calibration for both Channel A and B, where you measure it with an empty vessel (point 1), and a fully filled vessel (point 2), of course you will have to know the real weight of the filled vessel to set the right hand side of that comparison.
Instead of a filled vessel, where the weight may be unknown, you can add reference weights close to the (expected) maximum weight.
If the exact amount of fluid in liters/gallons is known, and the weight per liter/gallon too, you can of course multiply those to get the weight.
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