A number of times, the glass has cracked. The main component of this project is a Load cell and HX711 load cell amplifier module.As you can see, one side is marked with ten kilograms. Extract the downloaded ZIP file and move it into your Arduino "libraries" folder. We are interfacing 40Kg load cell to the arduino using HX711 Load cell amplifier module. They can safely handle 120% overload (60 kg / 130 lbs per cell) and use 3.3V instead of 5V. Arduino Code to Read Weight Value from the HX711 Module. 5kg load cell - Load cells are specially shaped metal parts that have strain gauges glue to them. The load cell is squeezed between the outer shell and the spacer ring: The four load cell circuit mounted under a wooden board: Click on the green "Clone or download" button and then "Download ZIP.". (adsbygoogle = window.adsbygoogle || []).push({}); In this project we will make a Weighing Scale using 40KG Load Cell, HX711 24 bit Amplifier Module & Arduino. Overview: In this project we will be “interfacing HX711 Load cell amplifier with Arduino” and 16*2 LCD for designing Weighing Machine using Arduino Load Cell & HX711 Module. Button Load Cell Arduino picture from Yuyao Tongyong Meter Co., Ltd. view photo of Compression Load Cell, Sensor, Transducer.Contact China Suppliers for More Products and Price. The loadcell connects to a HX711 load cell amplifier that then goes to an Arduino Micro. 4. 1 x 50kg (110 lbs). Verify Your Load Cell Wires. Description: HX711 and Arduino-This tutorial is based on the HX711 breakout board, Arduino Uno and a Load cell or Strain gauge.This tutorial explains step by step how to use the load cell or Strain gauge with the HX711 breakout board and how to write a basic Arduino Uno program to access the values and print them on the Serial monitor. Connect the outer wire pairs to E+ and E- output of the HX711 module. This means you have to add a spacer between the board and the outer rim of the load cell. Once you upload the calibration code, open the serial monitor and adjust your scale factor with known weight until you see the correct readings. This process calibrates your scale. Also, you’ll see how to use the load cell module with Arduino. Once you find the calibration factor update it in below code. Black (Excitation- or GND). With the help of Visuino the task is so easy that you can complete it in just couple of minutes.. It should work without any modifications if you connected the 2. So once you have established two data pairs, you can interpolate the rest. Connection Then it takes some additional time to reach back to zero again. Thus this will make the scale precise and accurate. 2 x 50kg (100 kg / 220 lbs). Arduino Uno-based electronic weighing machine by 5-wire 3 kg load cell. HX711 also works with 3.3V. Connect the middle cable (red) of one of the diagonals to the E+ and E- outputs of the HX711 module. Like with the power wires, the polarity is not important. Interfacing a Load Cell with Arduino. In this tutorial, you will learn about the load cell module, its applications and its operation. This can get a little confusing. Connect the DT & SCK Pins of Load Cell to Arduino D2 & D3 Pins. Connect the middle cable (red) of the load cell to the A+ input of the HX711 module. This is required as load cell bends slightly when some weight is placed over it. Hi, is ‘t possible to connect four load cells at one hx711 ? The HX711 is easily wired to the Arduino using any two digital or analog pins. Connect the DT and SCK of the HX711 module to any of the Arduino digital IO pins. See the wiring diagram for how to connect the load cells, HX711, and Arduino. Using Four Load Cells in a Single Circuit. In this example A = 10 kg. For Uno/Nano, those are pins 2 and 3. If you combine four cells to a single scale, Required circuit of 20ltr. For this purpose, we useHX711 amplifier sensor. Green (A-, S-, or O-). I am using the 5V of the Arduino board as exitation to the load cell, not the 5v-ref on the chip; Using a 1760 kg load cell I was able to sense 0.1 kg changes I used a 16X2 I2C LCD Display to minimize the connection. Here is a circuit diagram for interfacing 40KG Load Cell and HX711 Module with Arduino. You can do it with a simple multimeter. A step-by-step guide in video form. The polarity doesn't matter. Switching will only invert the calibration parameter in the software. Electronic weighing machines use load cells to calculate the load or the actual pressure produced by the load. Mounting the 50kg Bathroom Scale Module to a Wooden Board. When the metal part bends, the resistance of the load cell … //This can be used to remove the need to tare the scale. This Button Load Cell is used in heavy applications. I am doing my experiments with a 20 kg load cell, but the same principles apply for other types of four-wire load cells. ... 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