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HX711 Load Cell Module
The HX711 Dual-Channel 24 Bit Precision A/D weight Pressure Sensor Load Cell Amplifier and ADC Module is a small 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 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.
Analog Sides:
- 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 Sides:
- GND: 0V / Ground Power Connection.
- DT: Data IO Connection.
- SCK: Serial Clock Input.
- VCC: Power Input.
Package Includes:
- 1 x HX711 Load Cell Module
Specifications:
Data accuracy | 24 Bit |
Refresh frequency | 80 Hz |
Operating Voltage | 5V DC |
Operating current | <10 mA |
Dimensions | 38mm x 21mm x 10mm |
Weight | 15 grams |
1. How does an HX711 load cell work?
- The HX711 is a 24bit ADC that amplifies and digitally converts the output of the load cell. Then this amplified value is fed to the Microcontrollers, you can read the changes in the load cell's resistance with some calibration.
2. What is the HX711 weight sensor?
- The HX711 is a 24-bit analog-to-digital converter (ADC) designed to interface directly with a bridge sensor in weighing scales and industrial control applications. With some calibration, you will be able to read the changes in the resistance of the load cell by connecting the module to your microcontroller.
3. How to Install HX711 Library to Arduino IDE?
- Follow the below mentioned steps to install HX711 Library to Arduino IDE.
- Download the library from the web
- Open Arduino IDE.
- Choose HX711-master.
- Open a new sketch and save it as "Weight_Scale”.
- Add the library to your sketch, type #include <HX711.
- After adding the library, add the code that initializes library functions.
4. What is the use of the HX711 module?
- The HX711 module is a Load Cell Amplifier breakout board for the HX711 IC that allows you to easily read load cells to measure weight. The HX711 Load Cell Module can be used for creating your industrial scale, process control, or simple presence detection.