25 Apr 2024


In today’s world of technology, building your own Arduino weight scale can be a fun and rewarding project. Arduino is an open-source electronics platform that allows users to create interactive projects with ease. By combining Arduino with some basic components, you can create a functional weight scale that can be used for a variety of purposes.

For this project, you will need the following components:

– Arduino Uno or similar microcontroller
– Load cells (strain gauge sensors)
– HX711 amplifier module
– LCD display
– Breadboard
– Wires
– Soldering iron and solder
– Enclosure for the scale

Step 1: Assemble the hardware

Start by connecting the load cells to the HX711 amplifier module. Each load cell should be connected to one channel on the HX711, and the VCC and GND pins should be connected to the corresponding pins on the Arduino. Use the datasheets for the load cells and HX711 module to determine the correct wiring.

Step 2: Connect the LCD display

Next, connect the LCD display to the Arduino. The LCD will be used to display the weight readings from the scale. Follow the datasheet or tutorial for the specific LCD model you are using to determine the correct wiring.

Step 3: Write the code

Now it’s time to write the code for the Arduino. You will need to read the input from the load cells using the HX711 library, calculate the weight based on the sensor readings, and display the weight on the LCD display. You can find example code and tutorials online to help you with this step.

Step 4: Test the scale

Once you have uploaded the code to the Arduino, it’s time to test the scale. Place an object of known weight on the scale and compare the reading to the actual weight. Make any necessary adjustments to the code or calibration settings to ensure accurate readings.

Step 5: Build the enclosure

Finally, build an enclosure for the scale to protect the electronics and create a professional-looking finished product. You can use a 3D printer, laser cutter, or simple box to create the enclosure. Be sure to leave a cutout for the LCD display and any buttons or switches you may have added.

Building your own Arduino weight scale can be a fun and educational project that allows you to learn more about electronics and programming. With some basic components and a little bit of effort, you can create a functional weight scale that is perfect for a variety of uses. So grab your Arduino and get started on this exciting project today!

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