M5Stack Voltage and Amperage Meter is a professional programmable high-precision power meter designed for accurate voltage and current measurement. This product is based on the M5StampS3 main control module, supporting WiFi functionality. It features two serially connected INA226 current and voltage measurement circuits, providing current detection resolutions of 2.5uA and 250uA, and supports a measurement range of 0-5A and 5-24V (1-24V in isolation mode). The product can be powered through a USB-C interface or Base terminal input and includes built-in power and signal isolation. Users can select between isolated measurement via USB power or non-isolated measurement using direct power through a toggle switch, catering to different application needs. The accompanying expansion BASE includes relay on/off control and a Grove port for secondary development.
Additionally, the instrument supports OTA firmware upgrades and USB MSC/OTG functionality, allowing users to edit and view data and configuration files stored in the main control file system on a PC. M5 also provides a free online data API interface, enabling users to upload test data to the EZData platform for remote access and browsing, significantly simplifying IoT application development. The VA Meter is a versatile and developer-friendly instrument, ideal for engineering projects requiring precise current and voltage measurements, as well as fields such as industrial automation, equipment monitoring, and smart grids.
Features
- High precision current detection (2.5uA/250uAResolution switching)
- Wide voltage input (5-24V)
- Cloud (EZData) data display
- PD input (internal does not contain PD decoy)
- Multiple power supply modes (PD INPUT/StampS3/External terminal)
- Power is isolated from signal
- USB MSC/OTG function
- Open source hardware and software
- OTA Upgrade
Applications
- Industrial Automation
- Equipment Monitoring
- Power Testing and Analysis
- Internet of Things (IoT) Devices
- Remote Monitoring and Data Collection
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