Moddable

Tools for developers to create truly open IoT products using standard JavaScript on low-cost microcontrollers.

[Moddable @moddabletech]

@RyanJ_KOL Thanks for the suggestion!

Our original sensor drivers have ad-hoc APIs; ECMA-419 gives them a consistent shape. Our implementation guide for ECMA-419 modules is a good starting point (especially clean-up). We'll update that with sensor-specific advice.
https://t.co/PTsa3Up1GF

[Moddable @moddabletech]

Moddable SDK 10 is live!

🎉Our migration to ECMA-419 is nearly complete! Standard, secure, efficient, portable JavaScript APIs for embedded hardware. What's not to like?

🛠️Ready to update your projects? Our TypeScript typings help identify what needs to change.

https://t.co/UAwpIAc1ZS

[Moddable @moddabletech]

Here's some of what's in Moddable SDK 10:
📍Location sensors: GPS, GNSS & IP
💾FAT32 for SD cards
🎨Piu extensions: GIF, Image Buffer, Kinetic Scroller, QR Code & RoundRect
🧩ECMA-419 System
🧊Immutable ArrayBuffer
🌐ESP8266 OTA
🕷️xsdb runs unit tests
🔧8 more dev boards

[Moddable @moddabletech]

🎉 Meet KaozKit, a new SDK for integrating LLM agents written in industry-standard JavaScript into Swift apps.

🔥 KaozKit is a novel use of our XS JavaScript engine for embedded devices on the desktop, keeping it remarkably light and secure.

https://t.co/5tilLl99bO

[Moddable @moddabletech]

@dr_sensor And it is so easy for Zephyr to do that. https://t.co/jXXCqtLAgp

[Moddable @moddabletech]

👩🏽‍💻 Every JavaScript developer knows that they should minimize blocking.

🤔 Unfortunately, the usual remedy can actually reduce perceived performance.

🧑‍🎓 Our blog goes in-depth on three approaches so you'll understand the tradeoffs.
https://t.co/GN2ofjmR4A

[Moddable @moddabletech]

Our September Moddable SDK release is live.
🔤FreeType. Scalable fonts.
📡RFID/NFC. Tap.
🌐WebDAV. Files served everywhere.
📄XML. In 2026.
⚡HTTP Server. Fast. Reliable.
📘Guides. For you & your LLM.
⚙️ESP-IDF 6.1. Differential flashing for fast install.
https://t.co/PYuRtKXCFF

[Mike @mdkellner]

Grok made a thing.
@moddabletech Moddable Display 2
It couldn't use Bender ©, so it made its own.
(It's only Wednesday.)

[Moddable @moddabletech]

This is insane.

[ししかわ/Shinya Ishikawa @meganetaaan]

https://t.co/sZ6cu1Qlkt

[ししかわ/Shinya Ishikawa @meganetaaan]

https://t.co/sZ6cu1Qlkt

[Moddable @moddabletech]

Web Serial was invented so PCs could talk to microcontrollers. Now microcontrollers can talk back using Web Serial, thanks to Moddable's new Web Streams.

[Moddable @moddabletech]

Web Streams are part of the Web’s foundation. But they’ve been out of reach for Embedded JavaScript. Until now.
🔥Moddable found a way to run streams efficiently on microcontrollers.🎉
Our blog tells the story of this huge step forward for embedded devs.
https://t.co/LTeg85jZCb

[Moddable @moddabletech]

Our Guides are a new kind of documentation, designed for Embedded JavaScript developers and their LLMs. Their code-first approach pairs small code snippets paired with concise explanations. They show how to perform common tasks simply. https://t.co/UIgZefAyXM

[ししかわ/Shinya Ishikawa @meganetaaan]

M5StackをTailscaleのネットワークに接続できた

[ししかわ/Shinya Ishikawa @meganetaaan]

iRobotの教材用ロボットのリモコンを #moddable で作った
BLEで走行とセンシングができる

[Moddable @moddabletech]

@stc1988 Exactly! AGENTS.md strongly recommends to use Guides as the starting point for API documentation. Seems to be enough to get the LLMs to notice, but improvements are always welcome.

[Moddable @moddabletech]

This release also includes:

🔌 Web Serial
📡 ECMA-419 Wi-Fi Access Point
📶 Captive Portal for app-free Wi-Fi provisioning
🌡️ Bosch BME280
⚡ ESP-IDF 6.0.2
📝 TypeScript 7
🛠️ New ESP32 and RP2350 devices
🔹 ESP32-C5 support
📦 mcpack enhancements
🕷️ xsdb timestamps

[Moddable @moddabletech]

Our August Moddable SDK release is live with two features you can't miss!

🔥 Web Streams have landed, bringing another building block of the modern Web platform to Embedded JavaScript
📚 All-new Guides for Embedded JavaScript developers and their LLMs

https://t.co/BCHSwAKy34

[STC @stc1988]

My new wear..
Thank you for your support😄@moddabletech