Little Bird
M5StickC Yun Hat(SH20,BMP280,SK6812)
The M5StickC Yun HAT is a cloud-shaped multi-sensor environmental monitoring accessory designed to mount on the M5StickC via the top socket. It integrates a ...
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The M5StickC Yun HAT is a cloud-shaped multi-sensor environmental monitoring accessory designed to mount on the M5StickC via the top socket. It integrates a temperature and humidity sensor (SHT20), barometric pressure sensor (BMP280), a photoresistor for ambient light detection, and 14 SK6812 RGB LEDs — all controlled by an on-board STM32F030F4 microprocessor.
The three-layer design features a main circuit PCB, a light-guiding acrylic middle layer with polished edges for even LED illumination, and a structural top board. The board includes a hook hole and two 6 × 4 mm magnet mounting positions for easy wall or fridge placement. An independent external power interface is also provided.
Key Features
- SHT20 Sensor – Temperature and humidity measurement
- BMP280 Sensor – Barometric pressure measurement
- Photoresistor – Ambient light detection
- 14× SK6812 RGB LEDs – Programmable lighting effects through polished acrylic diffuser
- STM32F030F4 MCU – On-board microprocessor with streamlined API
- M5StickC Compatible – Plugs into the M5StickC top socket
- Mounting Options – Hook hole and 2× magnet positions (6 × 4 mm)
- External Power – Independent power input interface
Specifications
- Compatible Device – M5StickC
- Processor – STM32F030F4
- Sensors – SHT20 (temp/humidity), BMP280 (pressure), photoresistor (light)
- LEDs – 14× SK6812 4020 RGB
- Development Platforms – Arduino, UIFlow (Blockly, MicroPython)
Ideal For
- Environmental data collection
- Smart home decoration and ambient displays
- Fridge magnet weather stations
- IoT sensor projects
Package Contents
- 1× Yun HAT
- 2× DuPont Cables
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- API
- An API (application programming interface) is a defined set of commands or functions that lets one piece of software interact with another, such as a library, operating system, hardware driver or online service. When something offers API support, it means you can control or query it from your own code rather than only through its built-in menus or buttons.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- MicroPython
- A version of the Python programming language made to run on microcontrollers. It matters because it lets beginners write readable code to control LEDs, sensors, motors and displays without needing to start with lower-level languages.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
- photocell
- A light-sensitive component whose electrical resistance changes with the amount of light falling on it. It matters when choosing or using light sensors, automatic lights, or brightness-detecting circuits because its response speed, resistance range, and sensitivity affect how reliably it detects light levels.
- photoresistor
- A light-sensitive resistor whose resistance changes depending on how much light hits it. It matters for projects such as night-lights and light alarms because it gives a simple way for a microcontroller to sense brightness.
- RGB
- Short for red, green and blue, the three primary colours of light that are mixed in varying amounts to make a wide range of colours. In electronics RGB can refer to an LED or pixel that blends these three colours, or to a colour signal or interface that carries separate red, green and blue channels.
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