Embedded Elixir

Want to look at and copy files on remote Nerves devices? This post shows you how using SSH.

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Introducing VintageNetWizard - Simple WiFi Configuration using a web browser

https://github.com/nerves-networking/vintage_net_wizard

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Introducing VintageNet - a new networking library for embedded Elixir devices, specially designed for Nerves 💙💻📶

https://github.com/nerves-networking/vintage_net

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Many home and office items use radio frequencies to communicate control. So naturally, lets take that over to control them from a single Nerves device with one wire on a GPIO pin.

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Reading datasheets for fun and profit, or how I learned to stop worrying and convert analog signals into elixir terms.

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Use Nerves and a little reverse engineering to control a motorized desk. Then intercept current height messages from the controller and publish to a Phoenix site for real-time desk height measurements…because #yolo.

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Iterating quickly over code changes when working with new hardware can be tricky. Nerves has built-in mechanisms that can be helpful, but what if there were an even faster, more efficient way?

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It’s one of an embedded developer’s worst nightmares: You have devices in the field, on remote sites, where you don’t have access to local staff to serve as your hands. You’re far from the devices, maybe on a different continent, even, and now you have a device that’s no longer responding to network requests, or not sending event data as expected. It is a terrible feeling. If you’re using Nerves to build firmware, you have tools at your disposal to help keep your devices online. [Read More]

If you are not super new to Elixir, you may have read this blog post by José Valim. If you haven’t read it, you may want to check it out. This post references it frequently.

Nerves puts a lot of focus into spending as much time developing your application on your host machine. This means you can rapidly develop your application, write tests, etc. When you feel it is ready you can then burn your firmware to a device and it will just work. This has an issue though.

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When you’re starting out with Nerves, you may have connected to your first projects over the network using nerves.local. Libraries like nerves_init_gadget make this easy and when you’re starting out, it’s really convenient. Don’t know the IP address that your device was assigned? Try nerves.local and you’re good to go.

And then you add a second device to your network. nerves.local isn’t looking so convenient any more.

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