Unit AC Measure
Description
Unit AC Measure is an isolated single-phase AC measurement unit based on an STM32 + HLW8032 solution, capable of real-time high-accuracy monitoring of current, voltage and power data. It integrates the AC isolation converter B0505ST16-W5 and communicates with the STM32 via the EL357 optocoupler. Users can obtain measurement data through the I2C interface. This product is ideal for power information collection, remote smart appliances and similar applications.
Note
Input Voltage
Operating measurement range: must be AC 100 ~ 240V@10A, otherwise the device will not work properly.
Features
- STM32G030 @ Cortex-M0+ 32-bit MCU, 64 KB Flash, 8 KB RAM
- Single-phase AC 100 ~ 240V / 10A measurement
- I2C communication (0x42)
- Development Platform: UIFlow, Arduino
Includes
- 1 x Unit AC Measure
- 1 x HY2.0-4P Grove Cable (20cm)
- 1 x VH3.96-4P Terminal
Applications
- Smart home appliances
- Metered socket
- Smart Wi-Fi socket
- EV charging pile
- Streetlight control system
Specifications
| Specification | Parameter |
|---|---|
| MCU | STM32G030F6P6 |
| AC Sampling IC | HLW8032 |
| Isolation IC | B0505ST16-W5 |
| Optocoupler IC | EL357NB |
| I2C Address | I2C @0x42 |
| Measurement Voltage / Current | 100VAC ~ 240VAC / 10A |
| Product Size | 56.0 x 24.0 x 10.3mm |
| Product Weight | 8.4g |
| Package Size | 138.0 x 93.0 x 11.3mm |
| Gross Weight | 16.9g |
Schematics
1/1
PinMap
Unit AC Measure
| HY2.0-4P | Black | Red | Yellow | White |
|---|---|---|---|---|
| PORT.A | GND | 5V | SDA | SCL |
Model Size
Datasheets
Softwares
Arduino
UiFlow1
UiFlow2
Internal Firmware
Protocol
Easyloader
| Easyloader | Download | Note |
|---|---|---|
| Unit AC Measure Easyloader | download | / |