HX711 Weighing sensor

The HX711 Weighing Sensor is a precision 24-bit analog-to-digital converter (ADC) designed specifically for weigh scale applications. It is used to interface load cells to microcontrollers for accurate weight measurement. The HX711 provides high precision and low-noise performance, making it ideal for electronic scales, industrial weight measurement systems, and other precision weighing applications.

Key Features:

• 24-bit ADC: High-resolution 24-bit analog-to-digital conversion
• Dual-Channel: Two differential input channels for multiple load cells
• Low Noise: Low-noise performance for accurate weight measurements
• Integrated Power Supply Regulator: Provides stable voltage for the load cell
• Serial Interface: Simple two-wire serial interface (Clock and Data) for easy integration with microcontrollers
• Programmable Gain: Selectable gain of 32, 64, and 128 for different load cell sensitivity

Technical Specifications:

• Resolution: 24-bit
• Channels: 2 differential input channels
• Gain Options: 32, 64, 128
• Operating Voltage: 2.7V to 5.5V
• Supply Current: Typically 1.5mA
• Power Down Current: Less than 1µA
• Input Differential Range: ±40mV (Gain = 128)
• Data Output Rate: 10Hz or 80Hz
• Interface: Two-wire serial interface (Clock and Data)
• Dimensions: Typically around 18mm x 18mm (for breakout boards)
• Operating Temperature Range: -40°C to +85°C

Applications:

• Electronic Scales: Ideal for digital weighing scales and balances
• Industrial Weighing Systems: Used in industrial weight measurement and monitoring systems
• Force Measurement: Suitable for force measurement applications in engineering and testing
• DIY Projects: Perfect for hobbyists and makers building custom weighing devices
• Agricultural and Medical Devices: Used in specialized weighing equipment for agriculture and medical applications

Usage:

1. Connection: Connect the load cell to the HX711 module’s input channels.
2. Power Supply: Provide a stable 2.7V to 5.5V power supply to the HX711 module.
3. Microcontroller Interface: Connect the data and clock pins to the corresponding microcontroller pins.
4. Programming: Use appropriate libraries or code to read and process the data from the HX711.
5. Calibration: Calibrate the system using known weights to ensure accurate measurements.

Caution:

• Wiring: Ensure correct wiring to avoid damage to the module and inaccurate readings.
• Power Supply: Use a stable power supply to minimize noise and ensure accurate measurements.
• Calibration: Regularly calibrate the sensor for maintaining measurement accuracy.
• Handling: Handle the sensor module carefully to avoid physical damage.

Datasheet:
For detailed technical specifications, refer to the HX711 Weighing Sensor Datasheet.