pdf-icon

Unit Mini Scales

SKU:U177

Description

Unit Mini Scales is an integrated mini weighing unit that incorporates a 5 Kg load cell, an ADC acquisition chip HX711, and a protocol conversion MCU, allowing direct output of weighing results. The product is equipped with an STM32F030F4P6 microcontroller, uses the I2C communication protocol for external communication, and supports multiple modules working together simultaneously. Additionally, it features an SK6812 RGB programmable LED indicator and a functional button, enabling users to easily perform zero calibration and tare adjustment. The top of the product is designed with M3 nut fixing holes, providing more installation options. Unit Mini Scales is suitable for scientific experiments, industrial production, and other fields.

Features

  • STM32F030F4P6@32-bit ARM Cortex-M0 processor
  • I2C communication, supports multiple units in parallel
  • SK6812 RGB
  • Button for zeroing and tare adjustment
  • Maximum weighing capacity of 5KG
  • Programming platforms: Arduino, UIFlow, Python, etc.

Includes

  • 1 x Unit Mini Scales
  • 4 x M3 nuts (hexagon 6 x 2.25mm)
  • 1 x HY2.0-4P Grove cable (20cm)

Applications

  • Scientific experiments
  • Industrial production

Specifications

Specification Parameter
Sensor ADC Chip HX711
Microcontroller STM32F030F4P6@32-bit ARM Cortex-M0 processor
I2C Communication Address 0x26
LED Indicator SK6812 RGB programmable
Dedicated Button For zero calibration and tare adjustment
Weighing Capacity 5KG
Bottom Fixing Nut Specification M3
Product Dimensions 40 x 24 x 18mm
Package Dimensions 136 x 92 x 24mm
Product Weight 15.3g
Gross Weight 22g

Learn

Install the weighing plate onto the Mini Scales Unit for weighing.

schematics

Schematics

PinMap

Unit Mini Scales

HY2.0-4P Black Red Yellow White
PORT.A GND 5V SDA SCL

SK6812, Button

STM32 PB1 PA7
SK6812 RGB
BUTTON KEY

Datasheets

Softwares

Arduino

UiFlow1

UiFlow2

Internal Firmware

Firmware Version Update Protocol
v3 First Release Version Unit Mini Scales I2C Protocol v3
v4 Removed the absolute value restriction on ADC variation values to enable displaying negative weight measurements. Protocol same with v3
M5 DAPLink
If you don't have the STM32 downloader tool, you can refer to the M5 DAPLink tutorial and use the Core2 or CoreS3 as a programmer to complete the firmware update for the device.

Protocol

Video

  • Unit-MiniScales Function Demonstration and Introduction