HX711 Load Cell Weight Sensor Module

HX711 Load Cell Weight Sensor Module – High Precision Weight Sensing

The HX711 Load Cell Weight Sensor Module combines a precision 24-bit HX711 analog-to-digital converter (ADC) with a load-cell-ready interface to deliver reliable, high-resolution weight and force measurements. Designed for fast integration with microcontrollers, this compact module is ideal for digital scales, industrial weighing systems, smart kitchen devices, and DIY electronics projects.

Key Features

• 24-bit HX711 ADC: High resolution for minimal measurement error and improved stability.
• Dual Input Channels: Two differential channels let you connect one or more load cells for multi-point measurement.
• Microcontroller Friendly: Easy serial interface with SCK and DOUT pins for Arduino, Raspberry Pi, ESP32 and other platforms.
• Wide Voltage Range: Operates from 2.6 V to 5.5 V DC for flexible power options.
• Low Power: Efficient operation makes it suitable for battery-powered scales and portable devices.
• Compact Footprint: Small form factor for simple integration into space-constrained applications.

Specifications

• ADC Type: 24-bit HX711
• Input Channels: Two differential input channels
• Output Type: Digital serial (SCK, DOUT)
• Operating Voltage: 2.6 V to 5.5 V DC
• Data Rate: Selectable 10 Hz or 80 Hz
• Operating Temperature: -40°C to 85°C
• Size: Compact module for easy mounting

Compatible Load Cells and Controllers

• Supports common strain gauge load cells (for example 5 kg, 10 kg and higher when matched appropriately).
• Works with Arduino, Raspberry Pi, ESP8266, ESP32 and most 3.3 V and 5 V microcontrollers.

Wiring and Integration (Basic)

• Connections: Connect the load cell wires to the module inputs (E+, E-, A+, A- depending on module labeling). Connect DOUT to a digital input and SCK to a clock output on your microcontroller.
• Power: Provide 2.6 V to 5.5 V to the VCC and GND pins. Use the same ground between the module and the controller.
• Libraries: Use widely available HX711 libraries for Arduino and Python libraries for Raspberry Pi to read and calibrate weight values.

Calibration Tips

• Start with a known calibration mass and follow library instructions to compute the scale factor.
• Allow the module to warm up briefly for stable readings.
• Keep wiring short and avoid electrical noise sources for best accuracy.

Typical Applications

• Digital kitchen scales and food portioning
• Industrial and laboratory weighing equipment
• Smart retail scales and vending systems
• Robotics, force-sensing platforms, and hobbyist weight projects

FAQ

• Can I use multiple load cells? Yes. The dual-channel differential inputs allow multi-point setups when combined properly.
• What accuracy can I expect? Accuracy depends on load cell quality, mechanical setup, and calibration, but the 24-bit ADC provides very high resolution.
• Is this module suitable for battery-powered designs? Yes. Low power consumption makes it a good choice for portable devices.

Note: Product images are for illustration only. Actual product appearance may vary slightly.