Smart Home Reference Designs Based on Seeed Studio XIAO Series

Due to a compact design, thumb-sized form factor, powerful processors, single-sided components, and rich peripherals, XIAO Series has captured the attention of product designers worldwide, becoming the go-to choice for creating cutting-edge smart home solutions. In this blog, we delve into the exceptional designs crafted by the vibrant community of product designers. Hope these designs could bring you inspiration for your own projects.

Solar PV Monitoring System Powered by Seeed Wio-E5 Module, XIAO RP2040 & Fusion PCBA Service

This design demonstrates how to build a LoRa®-enabled solar power monitoring system. The system collects data from photovoltaic solar panels using XIAO RP2040 and transmits it wirelessly using Wio E5 modules. The data is then uploaded to a Qubitro cloud portal via Wireless Cellular IoT notecards in the base station. The system uses a Gravity I2C Wattmeter sensor to monitor the generated voltage and consumed power, a BH1750 Light Intensity sensor to monitor solar light intensity, and a Grove Temperature and Humidity sensor to monitor the temperature. Seeed Studio Fusion PCB Assembly service is used to design the system. The project aims to promote the use of solar energy by monitoring and conserving resources using LoRa®-enabled systems.

DIY Flap Clock Powered by XIAO ESP32C3

The designer attempted to make their version of a Vestaboard – a flap display – because they found it expensive. The core features of this design are the flap display, which is made up of 64 flaps, and an ESP-based controller that can connect to Wi-Fi for time updates or webpage connections. The design also uses Fusion360 and a 3D printer and required various supplies such as stepper motors, wires, magnets, screws, a power supply, and wood plates to fix everything. The project had many challenges, especially with the flaps, but the writer was able to make the display partially functional in the end.

Home Automation Board Powered by XIAO SAMD21

It is a home automation shield for XIAO SAMD21 and provides a compact and versatile platform for prototyping and building electronic projects. The designer aimed to create a simple shield that could control various loads using a single SPDT relay, an isolated power supply, and a custom PCB. The shield was designed to be compatible with all XIAO boards, including the XIAO ESP32C3 and the most recent ESP32S3, making it a popular choice among hobbyists, makers, and professionals alike.

TachoStats PC Hardware Performance Monitor Powered by XIAO SAMD21

It is an efficient and easy-to-use solution for monitoring PC hardware performance. The designer chose to use the Seeed Studio round display for XIAO, which features a 1.28″ round IPS display, and the CST816S i2c capacitive touch controller, to display the performance data. The designer also created a 3D-printed enclosure to hold the XIAO microcontroller, providing a compact and elegant solution for the hardware. The designer aimed to make the TachoStats PC hardware performance monitor accessible to anyone who wanted to monitor their PC’s performance and provided the Arduino code and STL files for the enclosure on the Tallman Labs Github page.

PhatStats PC Performance TFT Display Powered by XIAO SAMD21

PhatStats is a PC hardware performance monitor that displays data on an Arduino-compatible XIAO SAMD21 using the PhatStats sketch. The Hardware Serial Monitor Windows client reads hardware statistics from a PC’s dedicated GPU and forwards the data over a serial port to the XIAO. The project assumes the above experience with the Arduino IDE and compatible boards. Hook-up guides are available for the Phat-Stats ILI9341 TFT display.

24Ghz mmWave Human Detection Sensor Kit

Powered by Seeed Studio XIAO ESP32C3, it supports Wi-Fi/BLE connectivity and offers precise human detection via mmWave sensors. Seamlessly connect grove modules for added features. Achieve easy setup for Home Assistant within 1-2 minutes, coupled with convenient wireless Over-The-Air (OTA) updates. Enable extensive versatility with replaceable mmWave sensors. Ideal for customizing smart home automation, detecting intrusions, and monitoring the well-being of the elderly.

SenseCAP Indicator D1Pro Powered by XIAO ESP32S3&RP2040

SenseCAP Indicator is a powerful and versatile IoT development platform that offers a wide range of features and customization options for developers and makers. The platform is equipped with powerful ESP32S3 and RP2040 dual MCUs and over 400 Grove-compatible GPIOs, providing flexible expansion options. It also includes built-in tVOC and CO2 sensors and an external Grove AHT20 temperature and humidity sensor for real-time air quality monitoring. The SenseCAP Indicator also features an integrated Semtech SX1262 LoRa® chip for IoT connectivity, allowing users to connect LoRa® devices to popular IoT platforms via Wi-Fi without needing additional compatible devices. Additionally, Seeed Studio provides one-stop ODM services for quick customization and scale-up to meet various needs.

Gas/Smoke Detector, Alarm System With Real-Time Leakage Monitoring Using Seeed Studio’s XIAO RP2040

The product designer designed this Gas/Smoke Detector Alarm System with real-time leakage monitoring using Seeed Studio’s XIAO RP2040 to provide compact and reliable safety equipment that can easily be installed anywhere. The designer likely recognized the need for a low-cost, efficient gas/smoke detector that could also provide real-time monitoring and warning in case of an emergency. By using the XIAO RP2040 and MQ-02 gas sensor, the designer was able to create a system that is small, reliable, and easy to use. The designer also utilized the various features of the XIAO RP2040 to provide multiple development interfaces and power supply options, making the system suitable for a wide range of applications.

Smart Key Finder Powered by XIAO nRF52840   

Losing keys can be a frustrating experience, especially when you’re in a hurry. A smart key finder device can help you locate your keys quickly and easily, saving you time and reducing stress. The XIAO nRF52840 is a powerful microcontroller that is well-suited for creating a smart key finder device, with its low-power consumption, high-performance capabilities, and built-in Bluetooth 5 support.


A room temperature and humidity meter that measures current room temperature and humidity and displays the readings on an SSD1306 OLED Screen. AHT10 is being used here to get the Temperature and humidity data, and the whole setup is driven by an XIAO SAMD21. This whole meter is powered through the onboard 18650 lithium Cell through a power management IC Setup that boosts the 3.7V of the lithium Cell to 5V for the MCU, display, and sensor to work.

6-Channel Temperature Meter Powered by XIAO SAMD21

This design aims to create an affordable alternative to a thermal camera for scientific use. It uses six NTC thermistors and an OLED screen to display temperature readings from different sensors simultaneously.

XIAO SAMD21 Power Meter With INA219

A small power meter using the INA219 current sensor and Seeed Studio XIAO SAMD21 board. It demonstrates the schematic and PCB design, emphasizing the small size of the XIAO board and the use of I2C communication between the INA219 and the OLED display.

About XIAO Series

XIAO Series Landing Page:

XIAO Series Reference Design:

XIAO is a series of ready-for-production development boards with a compact design, thumb-sized form factor, powerful processors, and rich peripherals. As a complete microcontroller with all SMD components placed on the same side of the board, it is also a functional module that can act as a building block for larger compute systems to simplify designing and building complex electronic systems by providing a pre-integrated and tested platform. By adopting XIAO, you can focus on creating the unique features and functions of the system, without worrying about the time and effort involved in integrating and testing the individual components.

Please feel free to reach out to [email protected] for any inquiries or if you’d like to engage in further project discussions. Your questions and interest are welcome.

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December 2023