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 the TTL 232. 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 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.

Load Cell Tutorial:

https://circuitjournal.com/four-wire-load-cell-with-HX711

Features Of Dual-Channel 24 Bit Precision A/D Module Pressure Sensor Module:

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

Specifications Of HX711 Dual-Channel Weighing Sensor Module:

Separator Input Voltage: 40mV

Data Accuracy: 24 bit (24 bit A / D Converter Integrated)

Gain: 32, 64, or 128

2 Channels

Digital Serial Output

Refresh Frequency: 80 Hz

Operating Voltage: 2.6 – 5.5V DC

Operating current: <10mA

Size: 38mm x 21mm x 10mm

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

Package Includes :

1 x HX711 Weighing Sensor Module

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