WEIGHT

SKU:U030

Description

WEIGHT integrates a HX711 24 bits A/D chip that is specifically designed for electronic weighing device.

The input multiplexer selects either Channel A or B differential input to the low-noise programmable gain amplifier (PGA). Channel "A" can be programmed with a gain of 128 or 64, corresponding to a full-scale differential input voltage of ±20mV or ±40mV respectively.

when a 5V supply is connected to AVDD analog power supply pin.

Channel B has a fixed gain of 32. There is no programming needed for the internal registers. All controls to the HX711 are through the pins.

In the test, we have this Unit channel A to connect a pressure sensor. Then, use M5Core screen to display the weight data.

Product Features

  • 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-reset
  • 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
  • Current consumption including on-chip analog power supply regulator: normal operation < 1.5mA, power down < 1uA
  • Operation supply voltage range: 2.6 ~ 5.5V
  • Operation temperature range: -40 ~ +85℃
  • 16 pin SOP-16 package
  • Program Platform: Arduino, UIFlow(Blockly, Python)
  • Two Lego-compatible holes

Include

  • 1x WEIGHT Unit
  • 1x Grove Cable

Applications

  • Micro weight meter
  • Kitchen Scale

Specification

Resources Parameter
Operating Voltage g
Operating Current g
Net weight 8g
Gross weight 20g
Product Size 40*24*12mm
Package Size 67*53*12mm

EasyLoader

download EasyLoader

1.EasyLoader is a simple and fast program burner. Every product page in EasyLoader provides a product-related case program. It can be burned to the master through simple steps, and a series of function verification can be performed. .

  1. After downloading the software, double-click to run the application, connect the M5 device to the computer through the data cable, select the port parameters, click "Burn" to start burning. (For M5StickC burning, please Set the baud rate to 750000 or 115200)
  1. Currently EasyLoader is only suitable for Windows operating system, compatible with M5 system adopts ESP32 as the control core host. Before installing for M5Core, you need to install CP210X driver (you do not need to install with M5StickC as controller) Click here to view the driver installation tutorial

Schematic

Pinmap

If WEIGHT was connected to GROVE A

M5Core(GROVE A)GPIO22GPIO215VGND
WEIGHT UnitDATA Pin (DAT)CLOCK Pin (CLK)5VGND

If WEIGHT was connected to GROVE B

M5Core(GROVE B)GPIO36GPIO265VGND
WEIGHT UnitDATA Pin (DAT)CLOCK Pin (CLK)5VGND

If WEIGHT was connected to GROVE C

M5Core(GROVE C)GPIO16GPIO175VGND
WEIGHT UnitDATA Pin (DAT)CLOCK Pin (CLK)5VGND

Learn

M5Stack Smart Supermarket
Thanks for the source code and project information provided by @沧海

Example

Arduino

We used a pressure sensor(10kg) in this experiment. (Unit: gram)

UIFlow

Feature Introduction

HX711 is a high-precision AD conversion chip designed for electronic scales, which is converted into the corresponding weight by reading the voltage value.

  • return to zero Reference to initial value as zero

  • Get weight Return weight

  • Get raw data Show rawdata

Usage

Last updated: 2020-12-14