Making a small scale scale requires a certain amount of engineering knowledge and skills. 1. Prepare materials and tools: Materials such as measurement sensors, piezoelectric sensors, electronic scale chips, control circuit boards, steel plates, bolts and nuts, as well as welding equipment, electric saws, electric drills and other tools are needed. 2. Build the sensor bracket: Solder or bolt the steel plate and sensor bracket to support the sensor. 3. Install the sensor: Install the metering sensor and piezoelectric sensor on the sensor bracket of the weighbridge to ensure that they are stable and firm. 4. Connect the electronic scale chip and control circuit board: Connect the electronic scale chip and control circuit board to the sensor according to the manual. 5. Install the control circuit board: Install the control circuit board in a safe position and ensure that it is well connected to the sensor and the electronic scale chip. 6. Connect the display: according to the manual of the electronic scale chip and control circuit board, connect the display screen to display the weight data. 7. Test and calibration: Put an appropriate amount of weight on the weighbridge, observe whether the weight data on the display screen is accurate, and calibrate as needed. 8. Complete the installation: Fix the weighbridge in the appropriate position to ensure that it is firm and stable. It should be noted that the materials, tools and technology involved in self-made weighbridge belong to the professional field, if you do not have relevant professional knowledge and experience, it is best to ask professionals to make and install, to ensure the safety and accuracy of the weighbridge.