---
title: OptoBlog | OptoNews 2016-05-11
description: OptoNews 2016-05-11 |
---
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# OptoBlog
# OptoBlog
## [OptoNews: Invitation to The Automation Conference](https://blog.opto22.com/optoblog/optonews-invitation-to-the-automation-conference)
Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on May 11, 2016, 5:25:11 PM
- [Tweet](https://twitter.com/share)
[](https://blog.opto22.com/optoblog/optonews-invitation-to-the-automation-conference)
Here's your invitation to a comprehensive automation conference you won't want to miss, May 24-25 in Chicago, Illinois: The Automation Conference.
[Read More](https://blog.opto22.com/optoblog/optonews-invitation-to-the-automation-conference)
0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/optonews-invitation-to-the-automation-conference#comments-listing)
Topics: [Process control](https://blog.opto22.com/optoblog/topic/process-control), [Discrete control](https://blog.opto22.com/optoblog/topic/discrete-control), [Internet of Things](https://blog.opto22.com/optoblog/topic/internet-of-things), [IoT](https://blog.opto22.com/optoblog/topic/iot), [optonews](https://blog.opto22.com/optoblog/topic/optonews), [Events & conferences](https://blog.opto22.com/optoblog/topic/events-conferences), [Security](https://blog.opto22.com/optoblog/topic/security), [OptoNews 2016-05-11](https://blog.opto22.com/optoblog/topic/optonews-2016-05-11)
## [OptoNews: groov R3.1b now available](https://blog.opto22.com/optoblog/optonews-groov-r31b-now-available)
Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on May 11, 2016, 5:19:06 PM
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[](https://blog.opto22.com/optoblog/optonews-groov-r31b-now-available)
In response to your requests for more frequent *groov* releases, here you are: *groov* R3.1b is released!
This new version fixes issues and adds a new enhancement: if communication fails between groov and an I/O device, errors will be written to the *groov* message logs. This information can help you debug the cause of communication errors.
[Read More](https://blog.opto22.com/optoblog/optonews-groov-r31b-now-available)
0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/optonews-groov-r31b-now-available#comments-listing)
Topics: [groov](https://blog.opto22.com/optoblog/topic/groov), [Updates](https://blog.opto22.com/optoblog/topic/updates), [optonews](https://blog.opto22.com/optoblog/topic/optonews), [OptoNews 2016-05-11](https://blog.opto22.com/optoblog/topic/optonews-2016-05-11)
## [OptoNews: CalCA delivers fresh produce to you](https://blog.opto22.com/optoblog/optonews-calca-delivers-fresh-produce-to-you)
Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on May 11, 2016, 5:18:05 PM
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[](https://blog.opto22.com/optoblog/optonews-calca-delivers-fresh-produce-to-you)
If you live just about anywhere in the U.S.A., you can probably thank California Controlled Atmosphere (CalCA) for some of the fresh fruits and vegetables you buy.
In fact, CalCA's industrial refrigeration systems for storing produce can be found throughout the world, reaching to India and China.
[Read More](https://blog.opto22.com/optoblog/optonews-calca-delivers-fresh-produce-to-you)
0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/optonews-calca-delivers-fresh-produce-to-you#comments-listing)
Topics: [Energy management](https://blog.opto22.com/optoblog/topic/energy-management), [Case studies](https://blog.opto22.com/optoblog/topic/case-studies), [Process control](https://blog.opto22.com/optoblog/topic/process-control), [Food & beverage](https://blog.opto22.com/optoblog/topic/food-amp-beverage), [Remote monitoring](https://blog.opto22.com/optoblog/topic/remote-monitoring), [optonews](https://blog.opto22.com/optoblog/topic/optonews), [OptoNews 2016-05-11](https://blog.opto22.com/optoblog/topic/optonews-2016-05-11)
## [OptoNews Tip: New Sinking/Sourcing Tech Note](https://blog.opto22.com/optoblog/optonews-tip-new-sinking-sourcing-tech-note)
Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on May 11, 2016, 5:17:18 PM
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[](https://blog.opto22.com/optoblog/optonews-tip-new-sinking-sourcing-tech-note)
Confused about sinking and sourcing when using digital I/O in DC circuits?
Judging by the response to our past blog posts on this issue, many people are. So we've pulled together a lot of practical information and put it into a short new technical note.
[Read More](https://blog.opto22.com/optoblog/optonews-tip-new-sinking-sourcing-tech-note)
0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/optonews-tip-new-sinking-sourcing-tech-note#comments-listing)
Topics: [Discrete control](https://blog.opto22.com/optoblog/topic/discrete-control), [Tips](https://blog.opto22.com/optoblog/topic/tips), [optonews](https://blog.opto22.com/optoblog/topic/optonews), [I/O](https://blog.opto22.com/optoblog/topic/io), [OptoNews 2016-05-11](https://blog.opto22.com/optoblog/topic/optonews-2016-05-11)
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- [sdk (1)](https://blog.opto22.com/optoblog/topic/sdk)
- [supply chain (1)](https://blog.opto22.com/optoblog/topic/supply-chain)
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