HX711 Dual-Channel 24 Bit Precision A/D weight Pressure Sensor
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This can be handy for creating your own industrial scale, process control, or simple presence detection. The HX711 Weighing Sensor uses a two-wire interface (Clock and Data) for communication. Any microcontroller’s GPIO pins should work and numerous libraries have been written making it easy to read data from the HX711.
Load cells use a four-wire Wheatstone bridge to connect to the HX711. These are commonly colored RED, BLK, WHT, GRN, and YLW.
Each color corresponds to the conventional color coding of load cells:
Red (Excitation+ or VCC).
Black (Excitation- or GND).
White (Amplifier+, Signal+, or Output+).
Green (A-, S-, or O-).
Yellow (Shield).
The YLW pin acts as an optional input that does not hook up to the strain gauge , but is utilized to ground and shield against outside EMI (electromagnetic interference). Please keep in mind that some load cells might have variations in colour-coding.
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HX711 Dual-Channel 24 Bit Precision A/D weight Pressure Sensor
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- Product SKU: KG194
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Specification
Description
HX711 Dual-Channel 24 Bit Precision A/D weight Pressure Sensor
The HX711 Dual-Channel 24 Bit Precision A/D weight Pressure Sensor is a Load Cell Amplifier breakout board; for the HX711 IC that allows you to easily read load cells to measure weight. By connecting the module to your microcontroller you will be able to read the changes in the resistance of the load cell; and with some calibration. You’ll be able to get very accurate weight measurements.This can be handy for creating your own industrial scale, process control, or simple presence detection. The HX711 Weighing Sensor uses a two-wire interface (Clock and Data) for communication. Any microcontroller’s GPIO pins should work and numerous libraries have been written making it easy to read data from the HX711.
Load cells use a four-wire Wheatstone bridge to connect to the HX711. These are commonly colored RED, BLK, WHT, GRN, and YLW.
Each color corresponds to the conventional color coding of load cells:
Red (Excitation+ or VCC).
Black (Excitation- or GND).
White (Amplifier+, Signal+, or Output+).
Green (A-, S-, or O-).
Yellow (Shield).
The YLW pin acts as an optional input that does not hook up to the strain gauge , but is utilized to ground and shield against outside EMI (electromagnetic interference). Please keep in mind that some load cells might have variations in colour-coding.
Technical Details
- Operating Voltage (V): 5 ~ 10
- Current consumption (mA): Normal operation 1.5mA
- Operating Temperature (°C): -40 ~ +85
- Length (mm): 24.3
- Width (mm): 18
- Height (mm): 3
- Weight (g): 1
Features
- Recommended excitation voltage: 5-10V.
- Two selectable differential input channels.
- On-chip active low noise PGA with selectable gain of 32, 64, and 128.
- On-chip power supply regulator for load-cell and ADC analogue power supply.
- Selectable 10SPS or 80SPS output data rate.
- On-chip oscillator requiring no external component with optional external crystal.
- On-chip power-on-reset.
- Simple digital control and serial interface: pin-driven controls, no programming needed.
- Simultaneous 50 and 60Hz supply rejection.
Pinouts
- 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: 0V / Ground Power Connection.
- DT: Data IO Connection.
- SCK: Serial Clock Input.
- VCC: Power Input.
Applications :
- Weight Measurement: Used in digital weighing scales to accurately measure weight by converting the analog output from load cells into digital data.
- Force Sensing: Ideal for force sensors to measure pressure, such as in industrial applications or robotics.
- Load Monitoring: Monitors weight or load in industrial equipment and systems, providing feedback for load balancing or material handling systems.
- Pressure Measurement: Used in pressure sensing applications, including hydraulic systems, to measure changes in pressure with high precision.
Integration with Arduino
Sample Code
Physical Attributes
- Length (mm): 24.3
- Width (mm): 18
- Height (mm): 3
- Weight (g): 1
Package Includes
- 1 x HX711 Dual-Channel 24 Bit Precision A/D weight Pressure Sensor
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