Node-RED Jacdac Node

Node-RED nodes to talk to Jacdac.

Jacdac is a bus-based plug-and-play hardware and software stack for microcontrollers and their peripherals. Jacdac is primarily designed for “modular electronics” scenarios that support rapid prototyping, creative exploration, making and learning through physical computing. Jacdac is designed to be cheap, flexible and extensible.

The nodes connect to a Jacdac bus via a USB and allow to listen for events or sensor readings.

Install

Use Palette manager in node-red or run the following command in your Node-RED user directory - typically ~/.node-red

npm install node-red-contrib-jacdac

Jacdac hardware

In order to connect to Jacdac modules, you will need to connect to a USB module or a SPI bridge.

• Raspberry Pi + JacHAT bridge
• micro:bit V2 + Jacdapter

Nodes

jacdac-event

This node listens for Jacdac events and send them in the payload. You can browse the services specification catalog to discover which events are available.

jacdac-report

This node reads Jacdac registers and send them in the payload. You can browse the services specification catalog to discover which registers are avilable are available.

By default, the node looks for sensor reading, value and intensity registers. But you can override this behavior by customizing the register filters by name or code.

jacdac-command

This node sends Jacdac commands to services. The results of command can be inferred from the content of the registers.

You can browse the services specification catalog to discover which commands are available and how their payload should be formatted. The payload can either be a number, string or boolean for simple t ypes. Or an array or JSON object for complex requests.

Acknoledgments

This repo was built using the node-red TypeScript starter.

Contributing

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This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact [email protected] with any additional questions or comments.

Trademarks

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