HX711 HW 29 Weighing Sensor Load Cell Amplifier Module
HX711 overview
The HX711 is an HW 29 Weighing Sensor Load Cell Amplifier Module, supplied in an SOP-16 package. Main ratings: Separator Input Voltage 40mV; Data Accuracy 24-bit (24-bit A / D Converter Integrated); Gain 32, 64, or 128; Refresh Frequency 80 Hz. This page brings together the HX711 pinout and key specifications, with the full datasheet PDF to preview below or download.
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. The HX711 uses a two-wire interface (Clock and Data) for communication. The load cell amplifier module communicates with the host via TTL 232. 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 pressure sensor can be handy for creating your own industrial scale, process control, or simple presence detection. It is commonly used to measure force, pressure, tension, torque, acceleration, and displacement used in aviation, machinery, electricity, chemistry, construction, medicine, and many other areas.
Key specifications
Datasheet
HX711 features
- Two Selectable Differential Input Channels
- On-Chip Power Supply Regulator for load-cell and ADC analog power supply
- 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
- 2 Channels
- Digital Serial Output
HX711 pinout
| Name | Description |
|---|---|
| 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 |
| GND | 0V / Ground Power Connection |
| DT | Data IO Connection |
| SCK | Serial Clock Input |
| VCC | Power Input |
HX711 applications
- Automotive applications for weight distribution and load sensing.
- Robotics and automation for precise force feedback control.
- Sports and fitness equipment for tracking weightlifting or force exertion.
- Internet of Things (IoT) applications for remote weight monitoring and data logging.
- Inventory management systems for tracking product quantities by weight.
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