The M5Stack Voltage and Amperage Meter with M5StampS3 is a compact, high-accuracy digital multimeter module designed for modern IoT system integration and embedded projects. Built around the advanced ESP32-S3 MCU (via M5StampS3), this module delivers precise DC voltage and current readings, making it perfect for monitoring power consumption, diagnosing equipment, and enabling smart analytics in real time.
With built-in Wi-Fi and Bluetooth wireless connectivity, you can remotely acquire and analyze electrical data, integrate with cloud platforms, or develop custom web dashboards. The user-friendly, plug-and-play design ensures seamless compatibility with other M5Stack products, empowering rapid prototyping and fast deployment in diverse IoT scenarios.
Ideal for applications such as industrial machine diagnostics, remote sensing, smart grid solutions, laboratory equipment monitoring, and DIY electronics, this versatile meter is the premier tool for developers, engineers, and makers needing reliable power measurement and data communication in a single compact unit.
Features
- Precision Measurement: Accurately measures DC voltage and current for your projects.
- Powerful Core: Built-in M5StampS3 module featuring an ESP32-S3 MCU.
- Wireless Connectivity: Supports Wi-Fi and Bluetooth for real-time data transmission and remote monitoring.
- Easy Integration: Plug-and-play design, fully compatible with the entire M5Stack ecosystem.
- Wide Measurement Range: Suitable for diverse applications including equipment testing, smart energy metering, and IoT data acquisition.
- Compact Design: Space-saving form factor, easy to embed into various electronic systems.
What’s in the Box
- 1 x M5Stack Voltage and Amperage Meter Module (with M5StampS3)
- 1 x GROVE Connection Cable
- 1 x Screw Terminal
- 1 x Quick Start Manual
Applications
- Smart device and appliance energy monitoring
- IoT-based remote metering and diagnostics
- Industrial equipment and device testing
- DIY projects and maker experiments
- Battery management and solar power systems
- Prototyping edge intelligence solutions
Specification
| Resources | Parameters |
|---|---|
| Power detection chip | INA226 |
| SoC | ESP32S3FN8@Xtensa® 32-bit LX7 dual-core processor up to 240 MHz |
| Flash | 8MB Flash |
| PSRAM | N/A |
| Wi-Fi | IEEE 802.11 b/g/n (2.4 GHz Wi-Fi) |
| Screen | 1.3 Inch@ 240*240 Pixel |
| Screen Driver | ST7789 |
| PD Input/Output Power | 5-24V@0-5A |
| Current detection resolution | 2.5uA/250uA |
| Current sampling error | Small current (1-100mA) sampling error: 1.01% Large current (100mA-5A) Sampling error: 0.94% UA-level current sampling error: 0.69% |
| Power Consumption (factory firmware) | SSTAMP_S3 USB power supply: DC5V/123.5mA PD INPUT power supply: DC5V/118mA DC12V/66.8mA DC24V/26mA |
| PD OUTPUT capability | DC24V/3A 68℃ DC24V/5A 92℃ |
| USER interaction | Rotary encoder switch, reset button, boot button and board |
| INA226 Communication Address | Two detection chips INA226:0x40/0x41 |
| Relay | DC 5-24V @5A |
| Operating Temperature | 0-40°C |
| Product Size | VAMeter 36*36*14.7mm VAMeter 36*36*20.3mm Rail Fastening 51.5*48*5.5mm |
| Package Size | 150*93*30mm |
| Product Weight | VAMeter:17.7g VAMeter Base:25.8g Rail Fastening 4g |
| Package Weight | 68.1g |
FAQ
Q: What voltage and current range can this meter handle?
A: It supports DC voltage from 6V to 36V and current up to 5A.
Q: Is it programmable? Can I use Arduino or MicroPython?
A: Yes! The onboard ESP32-S3 supports Arduino IDE, MicroPython, and ESP-IDF.
Q: How does data transmission work?
A: Data can be sent wirelessly via Wi-Fi/Bluetooth, or output through UART.
Q: Can I use this module for industrial projects?
A: Absolutely. It is suitable for both educational and industrial IoT scenarios.
Q: Is the module plug-and-play with other M5Stack products?
A: Yes, it’s fully compatible with the M5Stack ecosystem and supports GROVE standard connections.
Why Choose This Meter?
- Accurate readings and wireless data at your fingertips
- Easy coding with mainstream development platforms
- Build and monitor your smart projects faster and smarter
Tips：
Download Mode： To enter download mode, press and hold the G0 button on VAMeter before powering up, then release it after powering up.