Using Node-RED on microcontrollers #MQTT @rei_vilo

Could Node-RED generate code for MCUs? Up until now, it provides an elegant low-code/no-code solution for IoT but requires a single-board computer to run, like a Raspberry Pi 4B.

The Moddable SDK implements JavaScript on MCUs and thus allows to run a Node-RED flow on them.

​Supported hardware includes ESP32, Raspberry Pi Pico W, among other options, and proprietary boards like the Moddable Two, built around an ESP32 and a 320×240 touch display

The project relies on different components:

  1. The flow is designed with Node-RED.
  2. ​Node-RED MCU Edition exports it to JavaScript.
  3. Moddable translates the JavaScript project into C++ code.
  4. Moddable calls the tool-chain of the board to build and link, upload and launch the project.
  5. Moddable opens an optional debugger.

Node-RED now includes a new pane, MCU (above) with two parts: on top, the selection of the flows to consider for the MCU; below the choice of the targeted board and different options.

Targeting MCUs with Node-RED might not be the most optimised solution, especially when displaying a dashboard, but this approach speeds up the development on interfaces for MQTT and GUI.

Read more on Embedded Computing.

Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here:

Join Adafruit on Mastodon

Adafruit is on Mastodon, join in!

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Join over 36,000+ makers on Adafruit’s Discord channels and be part of the community!

CircuitPython – The easiest way to program microcontrollers –

Maker Business — “Packaging” chips in the US

Wearables — Enclosures help fight body humidity in costumes

Electronics — Transformers: More than meets the eye!

Python for Microcontrollers — Python on Microcontrollers Newsletter: Silicon Labs introduces CircuitPython support, and more! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — Guardian Robot, Weather-wise Umbrella Stand, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — #NewProds 7/19/23 Feat. Adafruit Matrix Portal S3 CircuitPython Powered Internet Display!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at !

No Comments

No comments yet.

Sorry, the comment form is closed at this time.