Geekstory 4 × 50 kg Half-Bridge Load Cells with HX711 AD Module

For makers building a digital weighing project, this kit brings together four half-bridge load cells and an HX711 amplifier module. Use the sensors to create a weighing setup with a measurement range determined by how many cells are configured together. The module’s 24-bit converter is designed for electronic scales and provides the signal-processing front end for projects involving Arduino or Raspberry Pi.

Tips for day-to-day use

Choose the sensor arrangement to suit the scale you’re building. One 50 kg cell can form a full-bridge measurement with an external resistor, two cells can be combined for a 100 kg range, or four for a 200 kg range. For a multi-sensor build, this gives you a practical way to plan around the total measurement range required by your project.

The cells are the type used in digital bathroom scales, making them a familiar starting point for DIY weighing experiments and scale builds. The HX711 module connects the load-cell signal to a digital control and serial interface, helping bring weight sensing into an electronics project. Follow the appropriate bridge configuration for the number of sensors used.

What you’ll notice day to day

The four sensors let you work with more than one measurement arrangement, rather than building around a single cell alone. That flexibility is useful when you’re designing a weighing project and need to choose between a one-cell setup and a combined configuration. The HX711 is purpose-designed for electronic scales, with two selectable differential input channels and selectable gain, so it provides a dedicated conversion stage for load-cell measurements.

For example, a maker developing a digital scale can connect the sensor arrangement to the HX711 and use the module in an Arduino- or Raspberry Pi-based project. Compared with sourcing a load cell and amplifier separately, this set groups the core sensing components in one package, with four cells available for a multi-sensor configuration.

Highlights

• Four 50 kg half-bridge load cells for weighing-sensor projects.
• One HX711 AD weight module with a 24-bit A/D converter designed for electronic scales.
• One sensor with an external resistor: 50 kg measurement range, two sensors: 100 kg, four sensors: 200 kg.
• Two selectable differential input channels and selectable gain of 32, 64 or 128.
• Supply voltage range: 2.6–5.5 V.
• Intended for projects involving Arduino or Raspberry Pi.

Practical questions

What comes in the kit? It includes four 50 kg half-bridge load cells and one HX711 AD weight module, giving you the main sensing components for a weighing project.

What measurement range can I build for? The stated range is 50 kg with one sensor and an external resistor, 100 kg with two sensors, or 200 kg with four sensors. The cells must be arranged as a full-bridge measurement for the selected setup.

What supply voltage does the HX711 module support? Its operating supply voltage range is 2.6–5.5 V, a useful specification when planning how to power the module in an electronics build.

Is it worth it?

This kit is suited to makers who want to build or experiment with a digital weighing system using half-bridge sensors. Four cells support different stated measurement ranges, while the HX711 supplies a purpose-designed conversion module for scale projects. It’s a practical set of core components for exploring weight sensing with Arduino or Raspberry Pi.