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DIY Arduino Weighing Scale with HX711 and Load Cells: A Comprehensive Guide


Are you looking to create a custom weighing scale for your specific needs? Look no further than a DIY Arduino weighing scale with HX711 and load cells. This comprehensive guide will walk you through the process of building your own weighing scale using these simple and affordable components.
Load cells are transducers that are used to create an electrical signal whose magnitude is directly proportional to the force being measured. The HX711 is a precision 24-bit analog-to-digital converter (ADC) designed for weigh scales and industrial control applications to interface directly with a bridge sensor.
To get started, you will need the following materials:
1. Arduino Uno
2. HX711 module
3. Load cells
4. Breadboard and jumper wires
5. LCD display (optional)
6. Enclosure for the scale
Once you have all the materials, you can start by connecting the load cells to the HX711 module using the following wiring diagram:
– Red wire from the load cell to E+ on the HX711
– Black wire from the load cell to E- on the HX711
– White wire from the load cell to A- on the HX711
– Green wire from the load cell to A+ on the HX711
Next, connect the HX711 module to the Arduino Uno using the following wiring diagram:
– VCC on the HX711 to 5V on the Arduino Uno
– GND on the HX711 to GND on the Arduino Uno
– DT on the HX711 to D3 on the Arduino Uno
– SCK on the HX711 to D2 on the Arduino Uno
Once you have everything wired up, you can start writing the code for the Arduino. You can use the HX711 library for Arduino to easily interface with the HX711 module. The library provides functions to read the weight from the load cells and display it on an LCD display if desired.
After uploading the code to the Arduino Uno, you can start testing your weighing scale by placing objects of known weights on it and comparing the readings with the actual weights. You can also calibrate the scale to ensure accurate readings by using a calibration factor in the code.
Finally, you can package everything into an enclosure to create a professional-looking weighing scale for your specific needs. Whether you need a small kitchen scale or a larger industrial scale, the possibilities are endless with this DIY Arduino weighing scale.
In conclusion, building your own weighing scale with HX711 and load cells is a fun and rewarding project that can be customized to fit your specific needs. With a little bit of effort and the right materials, you can create a professional-grade weighing scale that rivals commercially available options at a fraction of the cost. So why wait? Start building your DIY Arduino weighing scale today!

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