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Ask HN: What do you do with your Raspberry Pi?

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Re: Ask HN: What do you do with your Raspberry Pi?

#442
I played with mine for a few weeks and got bored with it. It's on my desk here somewhere, possibly still running.

I setup a headless Linux distro and tested out the ARM port of SBCL. Not surprising, really, but I was able to setup Emacs, Slime, and SBCL and develop Lisp over SSH pretty comfortably.

I ended up writing a Common Lisp binding to WiringPI [0], and then another package which used it to read data from a GPS module [1]. I didn't really have a plan, just seemed interesting.

I haven't done much with it since then.

[0] https://github.com/jl2/wpi

[1] https://github.com/jl2/pigps

Re: Ask HN: What do you do with your Raspberry Pi?

#443

A security camera NVR. (Help wanted! I'm developing it here: https://github.com/scottlamb/moonfire-nvr I'm proud of the design but it's still far from a polished system that does everything a reasonable person would expect. Lots of opportunities to extend it if you're looking for a fun Rust + Javascript project.) A Raspberry Pi 2 will run a working setup; the new Raspberry Pi 4 should be a lot more pleasant in terms…

I need to dig into this later, but one suggestion is to put your video chunker in a separate process, this way you can scale across multiple nodes.

Re: Ask HN: What do you do with your Raspberry Pi?

#444

Stratum-1 time server using a GPS module; was a pain in the neck to set up; reminded me of the old days, compiling kernels on a 386, or building things on Ultrix. Served its purpose for a trading project though. I should probably do something else with it as its been gathering dust for years now.

Could you maybe go into more detail on your "trading project"? Very interested!

Re: Ask HN: What do you do with your Raspberry Pi?

#445
post #409

I use it to run my automated watering system in my garden. https://github.com/davidbanham/relay_runner I used to use an esp8266 but replaced it with a Pi after a lightning strike destroyed it. The Pi is just so much easier to write software for and it's been no less reliable in practice.

Why would it be less reliable in theory? The obvious argument against is that it's 'expensive' [relative to what you need], not, I wouldn't have thought, that it's unreliable.

There's a lot more going on with a Pi than an ESP chip. More bits, more failure modes is my reasoning.

Re: Ask HN: What do you do with your Raspberry Pi?

#446

1x Raspberry Pi 3 installed in my car within the internal network as a bastion box and to run software that let's my interact with the entertainment system 1x Raspberry Pi 3 running Home Assistant with a Z-Wave USB Dongle (Home Automation) 1x Raspberry Pi 3 running OctoPrint (Host/remote-control for 3D Printer) 1x Raspberry Pi 3 running FullPageOS (Full-screen Chromium in kiosk mode) displaying a server statusboard i…

> 1x Raspberry Pi 3 installed in my car within the internal network as a bastion box and to run software that let's my interact with the entertainment system

Can you go in more depth about this? How did you integrate it with the entertainment system, and what do specifically do you do with it?

Re: Ask HN: What do you do with your Raspberry Pi?

#447

I've made some interesting projects over the years - only a writeup on a few of these, and some are in pieces and in various states of disrepair after moving so much. Some write ups on larger projects: 1. I used a raspberry pi to coordinate the firing of multiple cameras, and then had the pi upload to a cloud service that would stitch them together to an "infinite zoom" super selfie. https://medium.com/@thekeithchest…

The infinite zoom project is really interesting. I'm shocked that it never got picked up! The use cases you describe sound incredibly obvious for big events.

Re: Ask HN: What do you do with your Raspberry Pi?

#449
I discovered that my 17-month old son loves to mess with stereo controls. So I bought a few rotary encoders and neo-pixel rings - build a wooden enclosure with a plastic faceplate, and wrote some code to generate fancy light and audio effects when he turns/clicks the knobs. He loves it.
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