M5Stack AC Measurement Unit Powermeter HLW8032

The M5Stack AC Measure Unit HLW8032 is an innovative alternating current measuring module for the precise recording of current, voltage, and power in real-time. Equipped with the STM32+HLW8032 scheme, it allows accurate monitoring of current and voltage values and the direct reading of the current power in watts via I2C communication. The module features a B0505ST16-W5 isolation chip and communicates with the STM32 via an EL357 optocoupler isolation chip. It is ideal for power supply information collection and for remote controlled smart home devices.

Features:

• STM32G030@M0+ 32-bit MCU with 64 KB flash and 8 KB RAM.
• Measurement of single-phase alternating current 100-240V/10A, including current and voltage measurement.
• Direct reading of the current power in watts via I2C communication (0x42).
• Compatible with programming platforms such as UIFlow and Arduino.

Application examples:

• Ideal for intelligent household appliances.
• Use in measuring outlets.
• Suitable for intelligent WLAN sockets.
• Can be used in electric vehicle charging stations.
• Suitable for street lamp control systems.

Documentation: 

• Quick Start Guide
• Arduino GitHub
• Official M5Stack Forum

Technical specifications:

• Manufacturer: M5Stack
• Manufacturer SKU: U164
• MCU: STM32G030@M0+ 32-bit MCU, 64 KB Flash, 8 KB RAM
• Alternating current detection chip: HLW8032
• Isolation chip: B0505ST16-W5
• Optocoupler communication chip: EL357NB
• I2C address: 0x42
• Voltage/current measuring range: 100-240VAC/10A
• Dimension: 56 x 24 x 10.3mm
• Weight: 17g

Package contains:

• 1x M5Stack AC Measure Unit Powermeter HLW8032
• 1x Grove Cable (20cm)
• 1x 3.96-4P Terminal Block