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Nerves Community Movements
NervesConf US videos!
The first two NervesConf US videos are out. Jon is a great listen and he went wide on this one. Invention, train systems, solving fundamental problems.
Then Alex, significantly more practically focused but going deep and wide on secure cloud connectivity with Nerves.
Nerves Meetup EU next week! (Oct 8th)
We've heard you! Alex has been running the awesome meetup from his west coast fort. It is kind of tricky for EU folks to attend at that time slot and that's not on him. As NervesConf EU showed, there are a lot of us over this side of the pond.
So I bothered Dennis Palmer and Gus Workman about fixing that. Chris Dutton hopped into the mix. And we have a sparkling line-up for the next three months. Fully remote, EU timezone.
- Steffen Deusch
Phoenix core team member and container-on-Nerves hobbyist. - Alvise Susmel
The EU part of the conspiracy pushing computer vision and AI inference on Nerves devices. Aka. Poeticoding - Frank Hunleth
Should not need an introduction. Creator of Nerves. Maintainer of systems.
Global Elixir Meetups happened
As part of the GEMs effort I went to the big town of Gothenburg. I spoke about my work with the volatile config of NervesKey chips.
I hope you had a chance to help revive the in-person Elixir community. I know Frank is kicking up something in DC or Maryland. It is a good time to reconnect in person.
NervesConf EU feat. Goatmire Elixir
NervesConf EU is in the bag. As the organizer I did a write-up on NervesConf EU & Goatmire Elixir .
First day of the 3 days under the Goatmire umbrella was NervesConf EU. Because Nerves comes first in my book ;)
The write-up has much more detailed thoughts but to summarize it was very successful. I don't have exact isolated numbers for NervesConf from the door but I believe we had about 120 of the 140 ticket holders in attendance at least.
Full photo gallery is up . I'll share some Nerves-related ones below.
And YES. We plan to PUBLISH RECORDED TALKS. No timeline but next few months is the idea.
Also happy to report the conference did not run a deficit. The workload was significant and we took out no compensation but the financials of the event were sound enough.
Importantly to the Nerves-interested we handed out the Wisteria name badges created by Gus Workman ( Protolux Electronics ) who put in an absolutely hilarious amount of work. Based on his Trellis board ( Nerves system ). Firmware is here . Lots of learnings for how to do this better at an event next time but it mostly worked and people had fun with them. That's roughly 180 eInk Nerves devices distributed to the population of developers.
Amazing talks on Nerves were given. I'll not rehash the speaker list. Look it up on the website. Enjoy the pictures :)
NervesConf US videos
Jon Carstens
Alex McLain - Secure cloud connectivity with Nerves
Nerves Meetup EU
Get on the list . And see the upcoming events !
Links for NervesConf EU & Goatmire
Fredrik Björeman of swedish podcast Kodsnack provided a very kind video review. He also blogged about the conferences .
If you attended and wrote something up, send it in by responding here or at lars@underjord.io.
Lots of people shared their thoughts on LinkedIn. I wish they all wrote blog posts but I'll certainly take it. So you get social links. And you can look through #goatmire .
Nerves-related
General
- Saša Jurić
- Meks McClure
- Ellie & Pep
- Sanne Kalkman
- Anita Ludermann
- Louise Blanc
- Sergey Kuznetsov
- Crhistoffer Ekeroth
- Martin Wöginger
- David Sinclair
- Martin Qvarnström
- David Qvarnström
- Eugen Maksymenko
- Eileen Noonan
(was not there but :)
My official wrap-up post .
Bluesky
You can find most posts on the hashtag:
#goatmire
Nerves-related
- Gus Workman
Unveiling Wisteria - Peter Ullrich
Added Snake to his badge. - Petter Boström
General
- Shannon & Parker
of Oban fame - Saša Jurić
- Maggie Tate
- Piotr Steininger
- Carl Malmgren
- Carl Gleisner
- Josh Price
about the Ash Summit bonus-event
Short-form official closing post .
Fediverse
I exist on Hachyderm so here is a link to #goatmire .
Project updates
And after all that. We still have system updates and more. Actually I feel like the conference has made a lot of ripples into activity in the ecosystem which is phenomenal.
There was a bag of Erlang CVEs for several protocol implementations that dropped during the conference so Frank was pushing those updates at that time.
Read the Erlang update for details on the CVEs.
Updates for Erlang and Buildroot
This is an important security/bug fix that addresses Erlang CVEs for the ssh module (see Erlang release notes).
Package updates
- nerves_system_br v1.31.7 . Also see nerves_system_br v1.31.6
Important derived package updates
Systems:
nerves_system_mangopi_mq_pro, v0.13.3
nerves_system_vultr, v0.28.3
nerves_system_x86_64, v1.31.3
nerves_system_grisp2, v0.15.3
nerves_system_osd32mp1, v0.22.3
nerves_system_bbb, v2.27.3
nerves_system_qemu_aarch64, v0.1.1
kiosk_system_rpi5, v0.4.3
kiosk_system_rpi4, v0.4.3
nerves_system_rpi0, v1.31.3
nerves_system_rpi, v1.31.3
nerves_system_rpi2, v1.31.3
nerves_system_rpi3, v1.31.3
nerves_system_rpi3a, v1.31.3
nerves_system_rpi4, v1.31.3
Also fixes issues preventing the Raspberry Pi camera from being used.
Build and use libpisp to support RPi5 image pipeline
Linux 6.12.25 with Raspberry Pi patches (Major update to match kernel/user land drivers better with upstream)
RPi Camera Support fixes
A lot less concerning and urgent but very fun and full of possibilities. There are fixes for camera usage on the RPis which broke during some of the Pi folks changing things in ways we did not notice.
Overall changes:
This is a security and bug fix update to 1.32.1.
Changes
- Added rpi-libpisp package to support the Raspberry Pi 5’s image processor
- Updated the rpi-libcamera package to check if rpi-libpisp is available and enable the pipeline if so.
Package updates
Systems:
kiosk_system_rpi5, v0.4.4
kiosk_system_rpi4, v0.4.4
nerves_system_rpi4, v1.31.4
nerves_system_rpi3a, v1.31.4
nerves_system_rpi3, v1.31.4
nerves_system_rpi2, v1.31.4
nerves_system_rpi0, v1.31.4
nerves_system_rpi, v1.31.4
- Package updates
- Hailo RT 4.22.0
Other stuff :)
- Support Get Current Settings for getting the MTU. Thanks to @joserp93
- Fixes
- Improve error message when Linux kernel routing options aren’t right. Thanks to @lawik for this fix.
IMPORTANT: Please upgrade to this version or newer since it fixes an issue where interrupts stopped getting sent. This bug was triggered when a GenServer owning an input GPIO with interrupts enabled was restarted. It could be triggered via manual closing and reopening of a GPIO as well.
- Bug fixes
- Fix an issue where the Erlang pid that should have received interrupts on GPIO changes was lost.
- Updates
- Update to Livebook v0.17.2
- Update Nerves systems to nerves_system_br v1.31.7
- Update all dependencies
- Bug fixes
- Fix hardcoded RELEASE_DIR setting so that it’s automatically computed from the release’s base directory. This allows non-Nerves use cases to change the base directory. Thanks to @ziopio for finding and fixing the issue.
- Updates
- Update Nerves systems to nerves_system_br v1.31.7 (Erlang/OTP 27.3.4.3, Buildroot 2025.02.6)
- Changes
- Persist logs on terminate if appropriate (Thanks @taun-fellowes)
- Support date entry navigation in the log viewer (Thanks @Shivaji-Dhepale, @Suraj Borate)
- Fix deprecation warnings in example code (Thanks @axelson)
- Fix Elixir 1.19 warnings
- Drop support for Elixir <1.13
- 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.
Added
- Send the firmwares validation status to NervesHub when the connection is established via an optional Client.firmware_validated?/0 callback. A default implementation is provided, while supporting overriding with custom logic.
- Poll for firmware validation changes and send an update to NervesHub when the firmware is validated.
- Detect if a firmware revert has occurred and send this information to NervesHub when the connection is established. This is supported via an optional Client.firmware_auto_revert_detected?/0 callback. A default implementation is provided, while supporting overriding with custom logic.
- Custom Clients can now be implemented using use NervesHubLink.Client, eliminating the need to implement all Client behavior callbacks.
Updated
- Support for Elixir 1.13.x has been removed
Nerves Meetups
October (US), meetup details
Go check out the US meetup, arranged by Alex at Redwire Labs. Last wednesday of every month. They pull a good crowd consistently.
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.
Nerves and Elixir shirts can be bought at
oswag.org
. Stickers with every purchase.
-Lars
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
