About Leafony: A Compact, Low-Power IoT Development Platform

Use this page with AI

Explore with your favorite AI

Gemini & other AI

Copy this page’s context into your AI to explore how it works and what you can build.

Copy the prompt, then paste it into Gemini’s message box.

View prompt

Read this official Leafony page and explain its key points in English. For hardware help, first ask for a photo or the installed leaf models, assembly and power sources, then the goal and tools. Clarify which LED or display changed and whether a cable or leaf was replaced. Do not equate an unseen reset button with an absent one, or I2C acknowledgement with a working display. Verify specifications against sources; distinguish observations from hypotheses. Follow a redirect to its destination; if unreadable, ask for the relevant text instead of guessing.

Page: About Leafony: A Compact, Low-Power IoT Development Platform

URL: https://docs.leafony.com/en/overview/

Description / headings (excerpt): Build IoT prototypes with small sensor, wireless and display boards. Learn about Leafony, choose a kit, set up development tools and try sample applications. / What is Leafony? / Uses / Introduction video / Explore application examples

Table of contents

What is Leafony?

Leafony lets you combine small circuit boards called leaves to build devices that measure temperature and humidity, send readings wirelessly, or provide text and sound output. Choose the sensor, communication and display leaves you need, combine them with an MCU (microcontroller) and power source, and run a program to control them.

Choose a communication method to suit your application. Cellular communication (Cat-M1) sends data over mobile operators' LTE networks and requires a compatible communication leaf, SIM and service plan.

This open innovation platform supports compact, low-power electronics for prototyping IT services and IoT edge nodes. The Trillion-Node Engine Project¹ developed the platform; designs with finalized specifications are called Leafony. LEAFONY SYSTEMS handled manufacturing and sales of the platform.

The Trillion-Node Study Group, founded by University of Tokyo Professor Emeritus Sakurai, provides a forum for discussing a future with many IoT/CPS² nodes. It uses Leafony as a basis for practical exploration and connects companies with application needs and enabling technologies.

The name combines “Leaf” and “Symphony”: individual leaves work together to create something new.

Uses

Business

IoT proofs of concept, research and development, field trials, prototype services, reference designs, demonstrations of components and technologies, and reuse of engineering knowledge.

Personal projects

Explore new applications and services, or build your own gadgets.

Education and universities

Teach IoT, run experiments, and demonstrate or apply research results.

Introduction video

Japanese flyer introducing Leafony microcontroller, communication, sensor, power and extension leaves — Japanese flyer. Select the image to open the full-size version in a new tab.

View the Leafony overview flyer (Japanese, A4 PDF)

Read the English general document or Japanese general document for more detail.

Explore application examples

The Nanocon Handbook published by MCPC introduces Leafony and award-winning projects from the Nanocon application contest. Read it for ideas for your own IoT prototypes and applications.

Read the Nanocon Handbook, 7th edition (May 2026, Japanese PDF / MCPC official website)

Get started

Company and product names mentioned on this website are trademarks or registered trademarks of their respective owners.

The Trillion-Node Engine Project was a research and development project commissioned and supported by Japan's New Energy and Industrial Technology Development Organization (NEDO). ↩
IoT means Internet of Things. CPS means Cyber-Physical Systems, which connect physical and digital environments. ↩