Node Generator parses this same specification document but instead produces the source code for a new node! Thankfully, most API’s these days are documented according to the OpenAPI specification, which came from and is still used by tools like Swagger to auto-generate human readable API docs. I’ll be focusing on the first method since this is what I used to create the MAX Audio Classifier node I needed.
In practice, this is typically done either by bundling code you already have in a JavaScript ‘ function’ node as a standalone package, or by generating JavaScript code for you based on some existing API documentation. Node GeneratorĪt a high level, the purpose of Node Generator is to make it even easier to create custom nodes that can be re-used or shared in other projects. That process is what I want to illustrate in the rest of this blog post. With the Node Generator tool though, that process gets even easier, and I was able to use this to create some of my own nodes to leverage the power of deep learning models from the Model Asset eXchange (MAX). For users familiar with JavaScript, creating new nodes and sharing them is a pretty straightforward process. There’s a wide variety to choose from, each with their own specific purpose, alongside plenty of community creations available through npm. Nodes can accept input, produce output, or both, and are the basic building block for applications in Node-RED.
#Node red contrib image tools series
When you look at a Node-RED flow you’ll see a series of nodes connected by wires as in the example above. Some nodes in a Node-RED flow, connected by wires. For a deeper dive into getting started with Node-RED, I recommend taking a look at the official documentation here or joining the official Slack channel at this link. It’s based on Node.js, but that gets abstracted away (for the most part) and you don’t need any programming experience to be effective. It’s a visual programming tool that lets you graphically connect devices and services together with functions and modules that can process the data they collect.
This year, one of my New Years goals has been to revisit some of these old favorites, and the project has already led me to something really cool: Node-RED. Being able to control the speed and color of a blinking LED brought the effects of my code into the physical world in a way that I hadn’t experienced until that point, and was enough to get me hooked. One of the first areas of programming that really got name excited was playing around with IoT devices like the Raspberry Pi and Arduino. Node-RED provides an easy-to-use visual interface for working with data across all kinds of devices.
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