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

• High Precision: 24-bit analog-to-digital conversion for precise measurements, perfect for applications where accuracy is crucial.
• Dual-Channel Input: Supports two selectable differential input channels, providing flexibility in sensor connection.
• On-Chip Amplifier: Includes a low-noise programmable gain amplifier (PGA) with selectable gains of 32, 64, and 128, allowing you to adjust the sensitivity based on your application.
• Simple Interface: The HX711 uses a straightforward two-wire interface (Clock and Data), making it compatible with most microcontrollers. Libraries are readily available to simplify integration.
• Integrated Power Supply: Features an on-chip power regulator to provide a stable power supply to the load cell and ADC.
• Selectable Output Rates: Choose between a 10SPS or 80SPS output data rate, depending on your need for precision or speed.
• Built-in Oscillator: No external components required, though an optional external crystal can be added for improved stability.
• Noise Immunity: Simultaneous rejection of 50Hz and 60Hz interference, ensuring accurate readings even in noisy environments.

• Industrial Scales: Build your own digital weighing scale with high precision and reliability.
• Process Control: Monitor and control processes that require precise weight measurements.
• Presence Detection: Use the sensor to detect the presence of objects based on weight.

Analog Side:

• E+: Excitation Positive
• E-: Excitation Negative
• A-: Channel A Negative Input
• A+: Channel A Positive Input
• B-: Channel B Negative Input
• B+: Channel B Positive Input

Digital Side:

• GND: Ground Power Connection (0V)
• DT: Data IO Connection
• SCK: Serial Clock Input
• VCC: Power Input (Recommended 5-10V)

Load cells are typically connected using a four-wire Wheatstone bridge. The conventional color coding is as follows:

• Red (Excitation+ or VCC)
• Black (Excitation- or GND)
• White (Signal+ or Output+)
• Green (Signal- or Output-)
• Yellow (Shield): Optional input, used for grounding and shielding against EMI (Electromagnetic Interference).

Please note that color coding may vary with different load cells, so always check the datasheet of your specific load cell.

• Excitation Voltage: 5-10V recommended.
• PGA Gain: Selectable gain of 32, 64, 128.
• Output Data Rate: Selectable 10SPS or 80SPS.
• On-Chip Features: Power supply regulator, low-noise PGA, oscillator, power-on-reset.
• Noise Rejection: 50Hz and 60Hz supply rejection.
• Package Includes: 1 x HX711 Dual-Channel 24-Bit Precision A/D Weight Pressure Sensor Module.

The HX711 module is an excellent choice for anyone looking to measure weight or pressure with high accuracy and ease. Its built-in features and simple interface make it a versatile tool for various applications, from DIY projects to industrial use.