--- title: OptoBlog | developer description: developer | --- - [Log in](https://www.opto22.com/logon?returnurl=%2f) - [Register](https://www.opto22.com/Special-Pages/Logon.aspx) - [Your Cart](https://www.opto22.com/Checkout/Shopping-Cart) - [Contact Us](https://www.opto22.com/support/contact-us) [![Opto 22 Logo](https://blog.opto22.com/hubfs/opto22_lightsilvergradient_800px.png "Opto 22 Logo")](https://www.opto22.com) - [Products](https://www.opto22.com/products) - [What Do You Want to Do?](https://www.opto22.com/products/what-do-you-want-to-do) - [groov RIO](https://www.opto22.com/products/groov-rio) - [groov EPIC System](https://www.opto22.com/products/groov-epic-system) - [Case Studies](https://www.opto22.com/products/groov-case-studies) - [Product Selector](https://www.opto22.com/products/product-selector) - [Product Families](https://www.opto22.com/products/product-families) - [IIoT System Architecture](https://www.opto22.com/support/resources-tools/demos/groov-epic-groov-rio-architecture) - 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[Education Partnerships](https://info.opto22.com/partnering-in-education) - [Opto Blog](https://blog.opto22.com/) - [Opto Forums](http://forums.opto22.com/) - [Events](https://www.opto22.com/community/events) - [Articles](https://www.opto22.com/articles) - [Log In](https://www.opto22.com/logon) - [Register](https://www.opto22.com/Special-Pages/Logon.aspx) - [Your Cart](https://www.opto22.com/Checkout/Shopping-Cart) - [Contact Us](https://www.opto22.com/support/contact-us)   # OptoBlog # OptoBlog ## [Accelerate your application](https://blog.opto22.com/optoblog/accelerate-your-application) Posted by [Dan White](https://blog.opto22.com/optoblog/author/dan-white) on Jul 16, 2025, 8:05:25 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/AccelerateIgnitionExchange.png)](https://blog.opto22.com/optoblog/accelerate-your-application) ### Take advantage of free tools to jumpstart your industrial automation projects. Whether you're an engineer, technician, or developer, starting a new project can be daunting. But what if you could hit the ground running with resources that streamline your workflow? Let's explore how you can accelerate your application using a suite of free tools designed to simplify and expedite your development process. [Read More](https://blog.opto22.com/optoblog/accelerate-your-application) 1 Comment [Click here to read/write comments](https://blog.opto22.com/optoblog/accelerate-your-application#comments-listing) Topics: [PAC Control](https://blog.opto22.com/optoblog/topic/pac-control), [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [CODESYS](https://blog.opto22.com/optoblog/topic/codesys), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [developer](https://blog.opto22.com/optoblog/topic/developer), [Ignition](https://blog.opto22.com/optoblog/topic/ignition), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio), [python](https://blog.opto22.com/optoblog/topic/python) ## [Using security certificates with Opto 22 Node-RED packages](https://blog.opto22.com/optoblog/using-security-certificates-with-opto-22-node-red-packages) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on May 17, 2023, 10:22:24 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/opto-nodes-certs-thumbs.jpg)](https://blog.opto22.com/optoblog/using-security-certificates-with-opto-22-node-red-packages) ### New video shows how to access data no matter where your Node-RED server is running. The Node-RED how-to video series continues with some tips on using certificates. Recent videos in the series covered[why you should run Node-RED](https://blog.opto22.com/optoblog/why-you-should-run-node-red-on-groov) on *groov* devices, and [how to install and configure Opto 22 Node-RED packages](https://blog.opto22.com/optoblog/watch-configuring-node-red-packages) for PAC Control, *groov* I/O and *groov* View. Now Terry Orchard is back at the demo desk to show you how to use both self-signed and Certificate Authority certificates to help move data between *groov* RIO and EPIC, no matter where your Node-RED server is running. [Read More](https://blog.opto22.com/optoblog/using-security-certificates-with-opto-22-node-red-packages) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/using-security-certificates-with-opto-22-node-red-packages#comments-listing) Topics: [Videos](https://blog.opto22.com/optoblog/topic/videos), [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [developer](https://blog.opto22.com/optoblog/topic/developer) ## [groov View and Node-RED](https://blog.opto22.com/optoblog/groov-view-and-node-red) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Apr 25, 2023, 12:00:00 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/NRPackages_groovView.jpg)](https://blog.opto22.com/optoblog/groov-view-and-node-red) ### The Node-RED package video series wraps up with a closer look at *groov* View nodes. If you've been following the OptoBlog, you've noticed we have a new series of Node-RED videos dedicated to explaining all the Opto 22 Node-RED packages available for your *groov* EPIC or RIO device. The last video in this 5-part series is now available. Terry Orchard is back in the OptoStudio to explain [*groov* View nodes](https://www.opto22.com/support/resources-tools/videos/video-opto-22-node-red-packages-groov-view-nodes). You'll learn about Read and Write, review how the nodes are configured, and see some examples of how they can be used. [Read More](https://blog.opto22.com/optoblog/groov-view-and-node-red) 1 Comment [Click here to read/write comments](https://blog.opto22.com/optoblog/groov-view-and-node-red#comments-listing) Topics: [Videos](https://blog.opto22.com/optoblog/topic/videos), [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [developer](https://blog.opto22.com/optoblog/topic/developer), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio) ## [groov I/O with Node-RED](https://blog.opto22.com/optoblog/groov-i/o-with-node-red) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Apr 19, 2023, 9:36:26 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/groovIIO_NodeRedPackage.jpg)](https://blog.opto22.com/optoblog/groov-i/o-with-node-red) ### The Opto 22 node packages for Node-RED video series continues with a focus on *groov* I/O nodes. Get ready for another video that explains how and why to use the Node-RED programming tool on *groov* EPIC. In this new video, Terry Orchard explains the different types of *groov* I/O nodes, gives some examples of how to use them, and explains what makes them different from other nodes. Before watching, you might want to review the Node-RED Package[Intro and Configuration](https://blog.opto22.com/optoblog/watch-configuring-node-red-packages) video. This  will provide some background on how the nodes were initially set up that are now being used in this latest I/O video. Now, Terry has a flow ready to go with some examples that make it easy to follow along. [Watch and learn.](https://www.opto22.com/support/resources-tools/videos/video-opto-22-node-red-packages-groov-i-o-nodes) [Read More](https://blog.opto22.com/optoblog/groov-i/o-with-node-red) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/groov-i/o-with-node-red#comments-listing) Topics: [Videos](https://blog.opto22.com/optoblog/topic/videos), [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [developer](https://blog.opto22.com/optoblog/topic/developer), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio) ## [New video: PAC Control node package](https://blog.opto22.com/optoblog/new-video-pac-control-node-package) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Apr 12, 2023, 9:30:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/PACControl_NRPackages.jpg)](https://blog.opto22.com/optoblog/new-video-pac-control-node-package) ### Learn how to use Node-RED with the PAC Control node; watch the next video in our new series. Have you been watching Terry Orchard's latest Node-RED video series that explains [why you should run Node-RED](https://blog.opto22.com/optoblog/why-you-should-run-node-red-on-groov) on Opto 22 *groov* products? Last week's[OptoBlog post](https://blog.opto22.com/optoblog/watch-configuring-node-red-packages) shared how to get started with configuring the Node-RED packages so they're ready to use. This week we move on to more details about the PAC Control node package. Watch as Terry explains in this latest video: [Opto 22 Node-RED Packages: PAC Control](https://www.opto22.com/support/resources-tools/videos/video-opto-22-node-red-packages-pac-control). [Read More](https://blog.opto22.com/optoblog/new-video-pac-control-node-package) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/new-video-pac-control-node-package#comments-listing) Topics: [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [developer](https://blog.opto22.com/optoblog/topic/developer), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio) ## [Watch: Configuring Node-RED packages](https://blog.opto22.com/optoblog/watch-configuring-node-red-packages) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Apr 5, 2023, 12:45:00 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/NodeREDIntroConfigure.jpg)](https://blog.opto22.com/optoblog/watch-configuring-node-red-packages) ### Next video in our new Node-RED series: how to install and configure Opto 22 Node-RED packages. Did you catch last week's video that made the case for why you should run Node-RED on *groov* EPIC and RIO? If you missed it, [watch that first video](https://blog.opto22.com/optoblog/why-you-should-run-node-red-on-groov) to hear Opto 22's Terry Orchard explain why the *groov* platform is ideal for Node-RED and your IIoT and automation projects. Next up in the series is [Opto 22 Node-RED Packages: Introduction and Configuration](https://www.opto22.com/support/resources-tools/videos/video-opto-22-node-red-packages-introduction-and). You'll learn how to install these packages and how to configure them so they're ready to use. [Read More](https://blog.opto22.com/optoblog/watch-configuring-node-red-packages) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/watch-configuring-node-red-packages#comments-listing) Topics: [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [developer](https://blog.opto22.com/optoblog/topic/developer), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio) ## [Repositories and Python on groov EPIC and RIO](https://blog.opto22.com/optoblog/repositories-and-python-on-groov-epic-and-rio) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Feb 15, 2023, 10:00:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/RepositPython_ss.jpg)](https://blog.opto22.com/optoblog/repositories-and-python-on-groov-epic-and-rio) ### Watch Terry Orchard's next video in the Secure Shell Access (SSH) series for custom Python programming. Did you see last week's new video:[Getting Started with *groov* EPIC & RIO Secure Shell?](https://blog.opto22.com/optoblog/groov-epic-rio-and-secure-shell-ssh) That video explained how to obtain a free Shell license for your *groov* EPIC, activate it, and then install it on your groov devices. This new video picks up where the introduction left off:[Getting Started with Repositories & Python on *groov* EPIC and RIO](https://www.opto22.com/support/resources-tools/videos/video-getting-started-with-repositories-and-pytho). Take a deeper dive using Secure Shell Access (SSH) along with custom Python programming packages with your *groov* devices. Although your host, Terry Orchard, demonstrates on a *groov* EPIC Learning Center in the video, the tips shared work on any [*groov* EPIC](https://www.opto22.com/products/groov-epic-system) or [RIO](https://www.opto22.com/products/groov-rio) model. [Read More](https://blog.opto22.com/optoblog/repositories-and-python-on-groov-epic-and-rio) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/repositories-and-python-on-groov-epic-and-rio#comments-listing) Topics: [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [developer](https://blog.opto22.com/optoblog/topic/developer), [secure shell](https://blog.opto22.com/optoblog/topic/secure-shell), [ssh](https://blog.opto22.com/optoblog/topic/ssh), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio), [python](https://blog.opto22.com/optoblog/topic/python) ## [groov EPIC, RIO and Secure Shell (SSH)](https://blog.opto22.com/optoblog/groov-epic-rio-and-secure-shell-ssh) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Feb 8, 2023, 8:53:20 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/SSH-intro-thumb.png)](https://blog.opto22.com/optoblog/groov-epic-rio-and-secure-shell-ssh) ### Watch the first Opto 22 developer video of 2023 as host Terry Orchard explains Secure Shell access for both *groov* EPIC and RIO devices. Welcome to the first of many new developer videos you'll see in 2023! Terry Orchard returns as your host to walk you through an important programming option for *groov* EPIC and *groov* RIO devices: Secure Shell  (SSH). If you use C/C++, Python, Java, or other languages, you can use what you already know to build custom applications and run them on the [*groov* EPIC](https://www.opto22.com/products/groov-epic-system)processor or [*groov* RIO](https://www.opto22.com/products/groov-rio) edge I/O module through Secure Shell access. The SSH protocol provides a secure remote login from one computer device to another. With strong authentication options (including passwords and public key authentication), plus strong encryption protection for communication security and integrity, SSH offers secure access for both users and automated processes.  Follow along in this [12 minute video](https://www.opto22.com/support/resources-tools/videos/video-getting-started-with-groov-epic-rio-secur) to learn how to get a Shell license, activate, and then install it on your *groov* devices. [Read More](https://blog.opto22.com/optoblog/groov-epic-rio-and-secure-shell-ssh) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/groov-epic-rio-and-secure-shell-ssh#comments-listing) Topics: [Videos](https://blog.opto22.com/optoblog/topic/videos), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [developer](https://blog.opto22.com/optoblog/topic/developer), [secure shell](https://blog.opto22.com/optoblog/topic/secure-shell), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio) ## [New CODESYS resources for developers](https://blog.opto22.com/optoblog/new-codesys-resources-for-developers) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Nov 30, 2022, 7:30:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/DeveloperSite2022_Codesys.png)](https://blog.opto22.com/optoblog/new-codesys-resources-for-developers) ### A new section just added to the Opto 22 Developer site supports the latest 3.0.0 release of the Opto 22 CODESYS library package. If you haven't visited [developer.opto22.com](http://developer.opto22.com/) in awhile, you'll want to spend some time reviewing our latest technical guides and resources. The site gets a lot of traffic from developers working with groov EPIC, SNAP PACs, Node-RED, and even industrial I/O for Raspberry Pi.  Since all Opto 22 products are designed on open standards, you have a variety of ways to interact with them and integrate with other systems. The developer site helps you do that. Now we've added a section dedicated to helping you program CODESYS on *groov* EPIC controllers. [Read More](https://blog.opto22.com/optoblog/new-codesys-resources-for-developers) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/new-codesys-resources-for-developers#comments-listing) Topics: [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [CODESYS](https://blog.opto22.com/optoblog/topic/codesys), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [developer](https://blog.opto22.com/optoblog/topic/developer) ## [Use Swagger UI to make API calls with Node-RED](https://blog.opto22.com/optoblog/use-swagger-ui-to-make-api-calls-with-node-red) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on May 11, 2022, 9:20:23 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/SwaggerNodeREDVideo.png)](https://blog.opto22.com/optoblog/use-swagger-ui-to-make-api-calls-with-node-red) ### Next up in the Node-RED videos series is a tutorial about using Swagger to help set up API calls. In under 20 minutes, this new developer video from Terry Orchard will take you through all the steps you need to get a solid understanding of using Swagger UI pages to create API calls you can bring into Node-RED. Using them together, you can control all sorts of APIs from your *groov* device, both getting and posting data, using simple Node-RED. [Read More](https://blog.opto22.com/optoblog/use-swagger-ui-to-make-api-calls-with-node-red) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/use-swagger-ui-to-make-api-calls-with-node-red#comments-listing) Topics: [Videos](https://blog.opto22.com/optoblog/topic/videos), [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [groov Manage](https://blog.opto22.com/optoblog/topic/groov-manage), [developer](https://blog.opto22.com/optoblog/topic/developer) [All posts](https://blog.opto22.com/optoblog/all) [Next](https://blog.opto22.com/optoblog/topic/developer/page/2) ### Subscribe to Email Updates ### Recent Posts ### Posts by Topic - [groov EPIC (507)](https://blog.opto22.com/optoblog/topic/groov-epic) - [groov RIO (302)](https://blog.opto22.com/optoblog/topic/groov-rio) - [optonews (218)](https://blog.opto22.com/optoblog/topic/optonews) - [IIoT (214)](https://blog.opto22.com/optoblog/topic/iiot) - [groov (192)](https://blog.opto22.com/optoblog/topic/groov) - 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