HX711 Dual-Channel 24 Bit Precision A/D weight Pressure Sensor

The HX711 24-Bit Precision ADC is a dedicated analog-to-digital converter designed specifically for weigh scales and industrial control applications. It amplifies the tiny signal from load cells with programmable gain and outputs digital values via a simple serial interface.

Key Features

• 24-bit ADC resolution
• Dual-channel analog input
• Programmable gain (32, 64, 128)
• On-chip power supply regulator
• Simple serial digital interface
• On-chip active low-noise PGA
• Low cost dedicated weigh scale solution

Technical Specifications

Applications

• Weigh scales
• Industrial weighing systems
• Force measurement
• Pressure sensing
• Process control
• Precision measurement

Important Notes

• Must connect to full-bridge load cell (4-wire)
• Use HX711 Arduino library for easy interfacing
• Power HX711 from same voltage as load cell excitation
• Programmable gain affects resolution and noise
• 10Hz mode has better noise performance than 80Hz
• Some modules have separate analog/digital grounds – connect properly