Gravity:Digital Weight Sensor

INTRODUCTION

Weight Sensor Module is based on HX711, which is a precision 24-bit analog-to-digital convertor designed for weight scale and industrial control applications to interface directly with a bridge sensor. It not only has a few basic functions, but also contains high integration, fast response, immunity, and other features. This weight sensor lowers the cost of the electronic scale, and at the same time improving the performance and reliability. The input interface is compatible with Arduino I/O port. The output adopts compact terminal that makes the sensor easier to connect. It's the best choose for electronic enthusiast to do some tiny home scale.



SPECIFICATION

24-Bit Analog-to-Digital Converter for Weight Scales (HX711)
 

    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 analog power supply
    On-chip oscillator requiring no external component with optional external crystal
    On-chip power-on-rest
    Simple digital control and serial interface: pin-driven controls, no programming needed
    Selectable 10SPS or 80SPS output data rate
    Simultaneous 50 and 60Hz supply rejection
    Supply Voltage: 2.6V~5.5V
    Current: <1.6mA
    Working temperature: -40~85°C
    16 pin SOP-16 package

 
Weight Sensor Module

    Range:1kg
    Excitation voltage: 5-15 V
    Output sensitivity: 1.0±0.15mV/V
    Synthetical error: 1 per thousand cent of full scale
    Zero shift: 0.05/0.03 （30min）%F.S
    Zero temperature shift: 0.05/0.03 %F.S/10°C
    Zero output: ±0.1mV/V
    Input impedance: 1055±15 Ω
    Output impedance: 1000±5 Ω
    Overload capability: 200 %F.S
    Output: Analog output
    Size: 33mm*38mm

 

DOCUMENTS

    Wiki Doc                                              
    library                                           
    schematic                              
    datasheet
    3D printed module design files

 
 

SHIPPING LIST

    Weight sensor module          x1
    Weight sensor                 x1
    Sensor cable                  x2