With their thumb-sized form factor, low-power consumption, and powerful processing capabilities, the Seeed Studio XIAO Series has become a go-to platform for building compact and efficient power management systems. Designed with all SMD components on one side, XIAO boards serve as reliable standalone microcontrollers or modular building blocks that integrate seamlessly into larger energy monitoring and control applications.
In this blog, we’ve compiled a collection of amazing community power management projects—from solar charge controllers and energy meters to wireless PV monitoring systems—highlighting how the XIAO Series empowers developers to optimize energy usage, extend battery life, and build smarter, greener systems.
Featured Product Review by CNX Software
Powered by: XIAO ESP32C6
Looking for an out-of-the-box solution for reliable AC energy monitoring? The XIAO 2-Channel Wi-Fi AC Energy Meter (XIAO-2CH-EM) is a pre-calibrated, dual-channel device designed for easy integration into Home Assistant via ESPHome. It uses non-invasive CT clamps to monitor bi-directional current flow—ideal for EV charging, solar generation, or whole-home energy tracking.
In a comprehensive review by CNX Software, the device was tested across two real-world setups: a rooftop solar inverter and a home EV charger. With built-in support for ESPHome and real-time telemetry, the meter recorded up to 40A of current accurately and reliably—no rewiring required. The product also includes STL files for its enclosure and is easily customizable using open-source ESPHome configs.
Thanks to its dual inputs and Home Assistant auto-discovery, the XIAO-2CH-EM offers a superior alternative to DIY ESP32+PZEM setups or cloud-reliant power rings. Read the full CNX Software review here
Featured Product Review by CNX Software
Powered by: XIAO ESP32C3
Looking for a no-code way to control AC appliances while monitoring power usage? The Seeed Studio 2-Channel Wi-Fi AC Relay is a smart switch designed with two independently controllable AC channels and integrated power metering—all pre-flashed with ESPHome for seamless Home Assistant integration.
In a hands-on review by CNX Software, the device was tested for real-world automation, including smart light control using an Aqara Cube. The smart switch was praised for its plug-and-play setup, reliable dual relay operation, and easy customization via OTA updates or YAML configs. While it doesn’t support per-channel energy monitoring, it’s all-in-one design, native Wi-Fi support, and user-friendly web dashboard make it an excellent ready-to-use option for smart home automation. Read the full CNX Software review here.
Creator: Ben Krejci
Powered by: XIAO ESP32C3
This project builds a real-time solar output dial using an automotive stepper gauge, XIAO ESP32C3, and L293D H-Bridge Driver. It shows current kW generation in a custom 3D-printed enclosure, calibrated via ESPHome with a reset script to combat motor drift. The tutorial offers printable files, config setup, and Home Assistant integration, ideal for smart energy monitoring. You can find the complete project details on Ben Krejci’s blog.
Creator: Pradeep
Powered by: XIAO RP2040
This LoRa®-enabled solar monitoring system gathers real-time data on power, temperature, and light intensity using the XIAO RP2040 and multiple Grove sensors. Data is sent wirelessly via the Wio-E5 module and uploaded to the Qubitro cloud through a Blues Wireless Notecard. Developed using Seeed Fusion PCBA services, the setup promotes solar energy usage and efficient resource tracking. Check out the full details here.
Creator: Dieter
Powered by: XIAO ESP32C3
An open-source upgrade to traditional PWM charge controllers, this solar charge controller features dual synchronous buck converters for high-efficiency power handling. It supports input voltages up to 90V and displays performance metrics on a 128×64 OLED screen. The XIAO ESP32C3 handles data acquisition and control logic, making the design ideal for custom solar systems. Check out the full guide here.
Creator: Open Green Energy
Powered by: XIAO ESP32C3
Monitor your solar PV system with this versatile DIY solution. It tracks voltage, current, temperature, and energy generation, helping optimize output and detect system inefficiencies. The XIAO ESP32C3 enables real-time data collection and transmission, while Grove sensors simplify environmental input monitoring. Ideal for beginners and solar enthusiasts alike.See the full build guide here.
Creator: Arnov Sharma
Powered by: XIAO ESP32S3
This project builds a Li-ion cell charging system equipped with an OLED display for real-time battery voltage monitoring, driven by the XIAO ESP32S3 and TP4056 charging IC. It includes a voltage divider circuit, displays readings on an SSD1306 OLED screen, and integrates a DC-DC buck converter to deliver a stable 5V supply from a 12V input. The custom PCB design supports a standard 18650 battery holder, manual power switching, and offers USB ports capable of powering other devices. Step-by-step instructions cover everything from PCB fabrication and 3D-printed housing to voltage calculations using analog pin readings. You can find the complete project details here.
Creator: Open Green Energy
Powered by: XIAO ESP32C3
This compact battery tester is built around the XIAO ESP32C3 and designed to charge, discharge, and analyze lithium-ion cells, including testing internal resistance. It features a charging circuit, OLED display, battery holder, and current sensing, with four testing modes and remote monitoring via Wi-Fi. The tutorial includes PCB assembly, firmware programming, and safety guidelines, making it a useful tool for verifying battery health and capacity. You can find the complete project details here.
Ready to Build Smarter Power Solutions?
Whether you’re designing off-grid solar systems, remote battery monitors, or smart energy meters, the Seeed Studio XIAO Series delivers the reliability and performance needed for today’s power-focused IoT applications.
Explore More
Have a project idea or question? Reach out to us at maker@seeed.cc—we’re always excited to hear from makers and developers like you!
Other Reference Designs for Seeed Studio XIAO
Last but not least, for makers and developers who are looking for project inspirations, we’ve curated several similar project collections based on the applications. Feel free to check out to get inspired for your next builds.
End Note
Hey community, we’re curating a monthly newsletter centering around the beloved Seeed Studio XIAO. If you want to stay up-to-date with:
🤖️ Cool Projects from the Community to get inspiration and tutorials
📰 Product Updates: firmware update, new product spoiler
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