M5Stack Scale Kit with Weight Unit

The M5Stack Scales Kit is a high precision low-cost weighing kit. This digital Scales kit is consist of four pieces of half-bridge resistive strain gauges, with a total weighing range of 200kgs. It is equipped with a 24-bit A/D converter chip HX711, specially designed for the high precision electronic scale. The built-in low-noise programmable amplifier supports 32/64/128 times gain adjustment. With the help of an M5Stack core for programming, you can create IoT based weighing scale in just a few minutes! Note: The Scale Kit will need a cover plate to work with, and the size of the cover plate should not exceed 50cm on one side. Features

* Total weighing range of 200kgs

* HX711:

* High precision 24bit ADC

* Programmable gain amplification 32, 64 and 128

* 10SPS output data rate

* Half-bridge resistive strain gauge.

* Output sensitivity: 1.0±0.1mV/V

* Non-linearity: 0.3% F.S

* Integrated Accuracy: 0.3%F.S

* Zero output: ±0.3mv/V

* Difference between upper and lower impedance of each strain gauge: 0.8Ω

* Output (in) impedance: 1000±5Ω

* Development platform:

* UIFlow (supported soon!)

* Arduino

Package Contents

* 4x Half-bridge resistive strain gauge

* 1x Weight Unit

* 1x HY2.0-4P Cable (20cm)

* 4x Double-sided adhesive paper (39 * 20 * 0.8mm)

* 4x Double-sided adhesive paper (39 * 12 * 0.8mm)

Specifications

Specifications Parameters

HX711 Output Sensitivity: High Precision 24bit ADC

Programmable Gain Amplification 32, 64, 128

10SPS Output Data Rate

Half-Bridge Resistance Strain Gauge Output Sensitivity: 1.0±0.1mV/V

Nonlinearity: 0.3%FS

Comprehensive Accuracy: 0.3%FS

Zero Output: ±0.3mv/V

Difference between the upper and lower impedance of the strain gauge: 0.8Ω

Output (input) impedance: 1000±5Ω

Gross Weight 92.5g

Net Weight 126.3g

Packing Size 105mm x 65mm x 40mm

Resources

* Product Documentation

* Installation Diagram

* HX711 datasheet

* Schematic

* Examples

* Scales kit with M5Core

* Scales kit with M5Core2

* Scales kit with ATOM

* Scales kit with M5StickC

* Scales kit with M5StickC Plus

* Scales kit with CoreInk

* Scales kit with M5Paper

* HX711 Library

Pin Mapping

M5CORE - PORT B G36 G26 5V GND

WEIGHT UNIT DATA Pin (DAT) CLOCK Pin (CLK) VCC GND