AC Measure Unit

SKU:U164

Description

AC Measure Unit is a single-phase AC measurement module with isolation capabilities. It utilizes the STM32+HLW8032 scheme to monitor high-precision current, voltage, power, and other data in real time. The module features a built-in AC isolation chip, B0505ST16-W5, and communicates with the STM32 through the EL357 optocoupler isolation chip. Users can access the measured data via I2C communication. This product is suitable for applications in power supply information collection, remote smart home appliances, and other related fields.

Features

• STM32G030@M0+ 32-bit MCU,64 KB Flash, 8 KB RAM
• Single-phase alternating current 100-240V/10A measurement
• I2C Communication (0x42)
• Programming platforms: UIFlow, Arduino

Includes

• 1*AC Measure Unit
• 1*HY2.0 Cable(20CM)
• 1*3.96-4P terminal

Applications

• Smart home appliances
• Metering sockets
• Smart WIFI socket
• Electric vehicle charging pile
• Street lamp control system

Specification

Resources	Parameters
MCU	STM32G030@M0+ 32-bit MCU,64 KB Flash, 8 KB RAM
AC current acquisition chip	HLW8032
Isolation chip	B0505ST16-W5
Optocoupler communication chip	EL357NB
I2C address	0x42
Measure voltage/current	100-240VAC/10A
Product Size	56*24*10.3mm
Package Size	136mm*92mm*13mm
Product Weight	8.8g
Package Weight	11.2g

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Related Link

• B0505ST16-W5
• EL357NB
• HLW8032
• STM32G030
• I2C protocol

Schematic

EasyLoader

• Windows
  • AC Measure Unit Easyloader

PinMap

Module Size

Protocol

Examples

Arduino

• AC Measure Unit Firmware

• AC Measure Unit Arduino Example

UIFlow

• AC Measure Unit UIFlow Example

UIFlow Blocks

• Init device I2C address

• Set voltage coefficient value ( 0 ~ 255 )

• Set current coefficient value ( 0 ~ 255 )

• Save voltage & current coefficient in flash

• Set device I2C address

• Get voltage (string)

• Get current (string)

• Get active power (string)

• Get apparent power (string)

• Get power factor (string)

• Get KW/H (string)

• Get voltage raw value

• Get curremt raw value

• Get active power raw value

• Get apparent power raw value

• Get power factor raw value

• Get KW/H raw value

• Get voltage coeeficient

• Get current coefficient

• Is data ready

• Get device firmware version