Unit Weight-I2C
Description
Unit Weight-I2C is a weighing acquisition transmitter unit adopting the “STM32 + HX711 chip” solution, enabling 24-bit precision weight measurement via I2C communication. This unit offers unique advantages, supporting multiple devices connected in parallel on the same I2C bus, providing flexibility for conducting measurements on a larger scale and obtaining more data collection points. It is widely applicable in industrial production, healthcare, logistics, laboratory research, and food processing, among many other fields.
Features
- STM32F030F4P6 + HX711
- 24-bit measurement accuracy
- I2C communication
- Development Platform: Arduino, UiFlow, etc.
Includes
- 1 x Unit Weight-I2C
- 1 x HY2.0-4P Grove Cable (20cm)
- 1 x VH3.96-4P
Applications
- Miniature weighing scale
- Food processing
- Logistics transportation
- Laboratory research
Specifications
| Specification | Parameter |
|---|---|
| MCU | STM32F030F4P6@32-bit ARM |
| Resolution | 24Bit |
| Communication | I2C (0x26) |
| Operating Temp | 0 ~ 40°C |
| Product Size | 56.0 x 24.0 x 11.3mm |
| Product Weight | 5.2g |
| Package Size | 138.0 x 93.0 x 12.3mm |
| Gross Weight | 13.3g |
Learn
- Connection Diagram
Schematics
1/1
PinMap
Unit Weight-I2C
| HY2.0-4P | Black | Red | Yellow | White |
|---|---|---|---|---|
| PORT.A | GND | 5V | SDA | SCL |
Model Size
Datasheets
Softwares
Arduino
UiFlow1
UiFlow2
Internal Firmware
| Firmware Version | Update | Protocol | Note |
|---|---|---|---|
| v3 | Initial release version | Unit Weight-I2C I2C Protocol v3 | / |
| v4 | Removed absolute value limit for ADC change value to allow display of negative weights. | No protocol changes, using v3 version | / |
M5 DAPLink
If you do not have an STM32 downloader tool, you can refer to the M5 DAPLink tutorial and use Core2 or CoreS3 as the programmer to update the firmware for the device.
Protocol
FAQ
Question: What is the difference between WEIGHT I2C Unit (U180), WEIGHT Unit (U030), Mini Scales Unit (U177), Scales Kit (K121) and Scales Unit (U108)?
