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Event reporting
Nerves Meetup EU, first event
The first assembly of Nerves Meetup EU:ers was a really good start. Gus and Chris put in a bunch of good prep and it will only get better as we all find our sea-legs .. seal eggs.. sea legs.
Steffen Deusch of LiveView fame showed up ready .
He spun a yarn of his background doing web kiosks throughout his days in the german school system and how he got around to containers and sysadmin work.
Then he gets really into it with the technical bits. And also some plot twists :)
He gets into local shells on Nerves (busybox rather than IEx), running containers on Nerves, operating the containers, the container systems he has built. Running containers on Nerves in VPS:es on Hetzner. Even som Phoenix LiveView, that is his bread-and-butter after all.
He covered all kinds of stuff in what is still somehow quite a cohesive presentation. If this is a teaser of what it will be like when Steffen speaks at conferences, sign me up.
Watch the video on YouTube .
Upcoming events
Nerves Meetup (the US one)
The only reason to still have a Meetup account ;)
This upcoming one is awesome. On October 29th Vittoria Bitton showcases the work she and Paulo Valente did on NxHailo and allowing Nerves to use the AI Kit (aka. Hailo8L) from the native Elixir ML stack centered around Nx.
Sign up for the meetup to not miss these.
Nerves Meetup EU
Get on the list . And see the upcoming events !
Next up is Alvise Susmel covering Elixir, RPi5 & the Hailo/AI Kit for real-time detection.
Project updates
I get a breather, no system updates this time around.
I have work puttering in NervesKey. People have pushed me PRs on the qemu system to improve that a bit. Josh took Steffen's talk above and went off with some awesome work for local shell access that should be coming to nerves_hub_link and nerves_hub_web soon enough.
NervesHub integration
Awesome set of updates. Tons of work by Josh Kalderimis on this. If it seems familiar, that's because I happened to include the RC release of this version in the last newsletter :)
Added
- The way firmware updates are downloaded and installed has been improved to support recovery of downloads in the event of application crashes and device reboots. The default update strategy has been encapsulated in a new module called NervesHubLink.UpdateManager.StreamingUpdater, while the new optional caching updater strategy is implemented in NervesHubLink.UpdateManager.CachingUpdater. New update strategies can be added by implementing the NervesHubLink.UpdateManager.Updater behaviour. Please read the module documentation for more information.
- The firmware update progress messages sent from Link to Hub have been improved to include more detailed information about the update process, including if the update was ignored, requesting it be rescheduled, or if an error occurred. These messages are backwards compatible with older versions of NervesHub.
- You can now connect to NervesHub using your TPM module for key and cert storage. If your project uses the TPM Hex library we will automatically configure the websocket to use the TPM module for reading the key and cert. Please refer to the readme for more information on how to configure this feature.
Updated
- Alarms relating to disk mounts being almost (or completely) full can be ignored. Previously only / :disk_almost_full Alarms were ingored, but this can now be configured to include other mounts. Please refer to the Extensions guide for more information.
- How NervesHubLinks checks for network availability has been improved to reduce blocking of GenServer messages. Previously :inet.gethostbyname/1 was used, but under certain circumstances calls would take over 5 seconds, which would block calls to check on the status of the connection. Using :gen_tcp.connect/4 allows for specifying a timeout, reducing the potential for the blocking of message processing.
Nerves and Elixir shirts can be bought at
oswag.org
. Stickers with every purchase.
-Lars
Got questions?
Trouble-shooting is best done on the Nerves Forum over at Elixir's Forum. But if you have big-picture questions you would like to ask around Nerves, feel free to send them in and we might just have ourselves a column here.
Participating in the community
The Nerves community is found wherever Elixirists gather. Try any of the following:
Questions are best asked on the Elixir Forum .
Social conversation and banter:
- Elixir Slack , #nerves channel
- Elixir Discord , #nerves channel
How you can help Nerves
Contribute in the way that works for you:
- Send corrections or improvements for documentation wherever it fails to help you.
- Write about Nerves, give talks about Nerves. Make videos about Nerves. It is all good.
- Write or port a new hardware library and include it in the Elixir Circuits collection .
- Get in touch about taking over maintenance duties for some libraries, we might be able to provide you hardware.
- Apply for an EEF stipend on something Nerves-related and build it. We can help if you have questions about this.
Finally, if you have questions about the newsletter or want to suggest something you can simply respond to this email.
- Lars
