The IoTsmart XIAO is a highly versatile carrier board engineered to accommodate a wide range of Seeed Studio XIAO and Adafruit QT Py microcontroller modules. Designed as part of the Make Things Happy! ecosystem , it serves as the central intelligence layer for the loTextra platform. This module allows you to seamlessly expand the functionality of your favorite compact controllers by connecting them to loTextra mezzanines. By combining a XIAO or QT Py board with the IoTsmart XIAO carrier, you can quickly deploy complex, standalone programmable smart devices for industrial automation, smart homes, and IoT projects.

Key Technical Features

• Controller Compatibility: Fully compatible with various Seeed Studio XIAO (including ESP32-S3, ESP32-C3, RP2040, nRF52840, MG24) and Adafruit QT Py modules.
• Integration: Dedicated 12-pin HOST connector for direct attachment to loTextra mezzanines, providing power, I²C communication, and access to 8 GPIOs.
• Expansion: Integrated Qwiic® I²C connector for rapid integration of external sensors, displays, and peripherals.
• Data Storage: Onboard 8 Kbit EEPROM for storing configuration settings and user data, accessible via I²C at addresses 0x54-0x57.
• Optional Connectivity: Supports an optional UART connector for accessing additional serial signals or GPIOs.
• Form Factor (H-HOST): Features a Horisontal HOST connector (H-HOST) mounted on the bottom side, specifically designed for Vertical Mounting into loTextra series mezzanines.
• Power Supply: Powered by a +5VDC input via a 2-pin PWR connector.
• Compact Design: Measures just 31x40 mm, making it ideal for space-constrained applications.

Software & Compatibility

The IoTsmart XIAO ecosystem is fully compatible with popular development and automation frameworks:

• loTflow: loTflow (GitHub)
• Node-RED: Node-RED (Official Site)
• Blynk: Blynk (Official Site)
• Development Environments: Arduino IDE, MicroPython, CircuitPython, and PlatformIO (compatibility depends on the specific XIAO/QT Py module installed).

Applications and Mezzanine Compatibility

The IoTsmart XIAO module is designed to be used with our loTextra industrial module series, including:

• loTextra Input
• loTextra Relay2 (Note: Some taller relay versions may have clearance constraints with V-HOST)
• loTextra SSR Small
• loTextra Octal2
• loTextra Analog
• loTextra Combo

Common Applications:

• Industrial automation and field devices (PLCs)
• Smart Home Systems and HVAC/Lighting control
• Environmental Monitoring and Transport systems

Documentation & Resources

All technical details and code examples are available in our public repository.

• Datasheet - Full technical specifications, electrical parameters, schematics (file is attached to the listing)
• GitHub Repository - Schematics, code examples, flashing guides, and supplementary documentation.
• Make Things Happy Website
• SKU - 020121102001