Gravity: Digital Weight Sensor

1. Example Code for Arduino-Kitchen Scale

The range of the weight scale is only 1kg. So, it's very appropriate for you to make a kitchen scale. we will bring you a step by step tutorial to make one and print the data by Arduino Serial Monitor.

Reference

This article serves as a reference guide to the DFRobot_HX711 library and Arduino installation for weight sensors, offering detailed insights into the sensor's structure, schematic, and datasheet to facilitate effective implementation.

Parameter	Description
Input Channels	Two selectable differential input channels
PGA	On-chip active low noise PGA with selectable gain of 32, 64 and 128
Power Supply	On-chip power supply regulator for load-cell and ADC analog power supply
Oscillator	On-chip oscillator requiring no external component with optional external crystal
Power-On Reset	On-chip power-on-reset
Interface	Simple digital control and serial interface: pin-driven controls, no programming needed
Data Rate	Selectable 10SPS or 80SPS output data rate
Supply Rejection	Simultaneous 50 and 60Hz supply rejection
Supply Voltage	2.6V~5.5V
Current	<1.6mA
Working Temperature	-40~85°C
Package	16 pin SOP-16 package

Parameter	Description
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

Gravity: Digital Weight Sensor

Specification

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

Weight Sensor Module