OptoBlog

How to use context storage in Node-RED

Posted by Janice Colmer on Apr 14, 2022 7:30:00 AM

Follow along in this new developer series video as Terry Orchard guides you through storing and passing data in a Node-RED flow.

What if you need to snapshot a message from a very specific part of a Node-RED flow?

For those of you who've been using the Node-RED programming tool or are just getting started, Terry's latest video provides some guidance on storing data. In a Node-RED flow, each node can add to, modify, or delete data in different ways.

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Topics: Videos, Node-RED, groov EPIC, groov RIO

Introduction to JSON for Node-RED

Posted by Janice Colmer on Mar 18, 2022 8:00:00 AM

New Opto 22 Developer Broadcast video makes the JSON data format easy to understand.

OptoBlog followers are most likely familiar with Terry Orchard's Node-RED video series, and he's recently added a new video to that playlist. This time, Terry's goal is to introduce you to the JSON data format, so it's easy to understand and simple to get started with.

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Topics: Videos, IoT, Node-RED, developer, json

Case Study: Using Edge I/O to Automate Quality Control

Posted by Josh Eastburn on Mar 9, 2022 9:08:32 AM

Intrinsics Imaging’s AI-powered vision system uses groov RIO to connect the cloud to the edge.

Machine vision systems can recognize superficial aberrations in manufactured goods—like lines, spots, holes, color discrepancies, and more—that would typically require time-consuming manual inspection. California-based Intrinsics Imaging solves this problem with its Heijunka Vision analytics-as-a-service software. But when Intrinsics was approached by a customer hoping to integrate Heijunka directly into process controls, it looked to Opto 22’s groov RIO edge I/O for a way to connect the cloud to the edge.

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Topics: Case studies, Node-RED, MQTT, groov RIO, SCADA

groov RIO EMU - Compact and Powerful Energy Monitoring Unit

Posted by Ben Orchard on Feb 14, 2022 8:00:00 AM

Small in size but loaded with data and connectivity options.

Hopefully, you caught our two previous related blog posts on the technical details of the groov EPIC Power Module, and the recent announcement of the new groov RIO EMU

In this blog post, I’ll focus on the unique features of the RIO EMU as a distributed power and energy monitoring device, plus so much more.

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Topics: Energy management, Node-RED, MQTT, Sparkplug, groov RIO, power monitoring

Flexible, low-cost water monitoring with edge I/O

Posted by Janice Colmer on Feb 11, 2022 7:30:00 AM

Remote I/O over MQTT helps Rust Automation deploy affordable remote monitoring in a challenging environment.

Did you watch the Fall CODESYS Tech Talk virtual event that we shared with you last October? It demonstrated how the CODESYS runtime engine works and why it's included on Opto 22's groov EPIC.

Jared Bates, from OptoPartner Rust Automation & Controls, joined us for that presentation. He discussed a current water management application that utilizes CODESYS on EPIC, groov RIO remote I/O, and MQTT for secure data communications. 

Now, we've put the story of all that cutting-edge technology into a case study, so you can dig into all the details!

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Topics: Case studies, Node-RED, CODESYS, groov View, groov EPIC, OptoPartner, groov RIO

New REST API Node-RED Video

Posted by Terry Orchard on Jan 26, 2022 7:11:10 AM

New video just added to the Node-RED developer playlist covers a simple API flow using daily weather data as an example.

Node-RED is an extremely powerful tool that we’ve featured many times on this blog and our YouTube channel, and one very common use of Node-RED is to use application programming interfaces or “APIs” to move data between devices and/or services that would otherwise be totally disconnected.

To help you get started using APIs with Node-RED if you’re unfamiliar with these tools, we’ve just made a new video about how to build a simple API flow using an example web service for daily weather data.

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Topics: Videos, Node-RED, groov EPIC, OptoU, groov RIO

The Art of the Possible: Collaborative data management

Posted by Josh Eastburn on Jan 18, 2022 3:12:56 PM

Get everyone on the same page with data tools that help you distinguish the signal from the noise. Tor Eriksen of Clarify explains how.

Clarify helps people turn data into good decisions

Last year, Opto 22 had the opportunity to showcase some amazing partner collaborations like our webcast with HiveMQ and Canary. The open automation ecosystem continues to explode with potential, so this year we wanted to bring you even more.

Throughout 2022, we’ll explore what’s possible when you pair Opto 22 hardware with other open automation tools. This series will include some heavy-hitters you might be familiar with as well as some new names. Hopefully at least one will turn on a lightbulb for you!

Our first guest is Tor-Inge Eriksen of Clarify, a time-series visualization platform that helps users quickly turn data into information. Tor, take it away!

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Topics: Node-RED, Data acquisition, groov EPIC, machine data, groov RIO, system integration, Art of the Possible, open source

OptoForums Top 5 for 2021

Posted by Ben Orchard on Dec 7, 2021 10:00:00 AM

Get a recap of the most searched topics and popular OptoForum posts of the year.

Let’s take a look back at 2021 through the eyes of the OptoForums. You remember last year's top 5, right?

For starters, we had almost 200 more people sign up this year over last. (Y-Axis below is the number of daily sign-ups).

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Topics: Node-RED, MQTT, groov EPIC, groov RIO, OPC UA, OptoForum

New Node-RED dashboard features in groov firmware 3.3

Posted by Terry Orchard on Dec 1, 2021 8:30:00 AM

Dashboard UI on integrated and HDMI displays, Dashboard-only user accounts, and login directly to the Dashboard!

If you follow this blog closely you'll have seen the news that the groov family has had a recent firmware release—version 3.3.1 for groov EPIC and 3.3.0 for groov RIO

This release brings a lot of great features that you can see in the OptoBlog posts linked above, but here I'd like to talk a bit more about the additional features added for Node-RED, specifically for the Node-RED Dashboard.

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Topics: Node-RED, groov EPIC, groov RIO

Get your groov RIO 3.3 update

Posted by Janice Colmer on Nov 30, 2021 10:06:01 AM

In step with our recent groov EPIC 3.3 firmware release comes our groov RIO 3.3 firmware update.

Ready to hear about new features included in our popular groov RIO edge I/O module? The recently released groov RIO firmware update 3.3 is now available. Here are some reasons you'll want to update!

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Topics: Firmware, Node-RED, Ignition Edge, groov RIO, power monitoring

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