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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?

#741

Post by axegon »

Truth be told I have 5 or 6 raspberries. In all seriousness I think I'm actively using 3:

* A rpi zero running several scripts(hooked to slack, telegram and a private mattermost server) to monitor the health of some production services at work from home(in case the network at work goes down and all the services there fail to notify the right people). Has never happened but having it makes sleep at night a tad better.

* Rpi 3 b for some throwaway code/testing/place to store stuff at home and using it as an access server to access my home network.

* Rpi 2 b pretty much glued to my parents' router so I can access the network at their place every time there's one of those "My computer is telling me something, what do I do?". I'm sure most of you are aware that those messages are surely gonna cause the end of the universe and need to be resolved as soon as possible and could not possibly wait 2 hours.

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

#742

Post by missjellyfish »

At one point I stuffed 40 of them into a rack mount and built a cluster to use for teaching at my university. Never gotten any publication out because it‘s fairly uninteresting from an academic point of view, but as a teaching tool to learn ARM assembler or parallel programming / how to execute stuff on supercomputers / OpenMPI it’s an invaluable tool.

Recently there have been some odroid c2 added to the cluster, so it‘s not only RPis anymore.

More info: https://www.caps.in.tum.de/en/himmuc/

Some Beautyshots at my Instagram: https://www.instagram.com/p/BcA1QdFgWuk/

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

#743

Post by agumonkey »

here's what I used mine for:

    - znc bouncer
    - tiny public http server
    - attempt at osmc/kodi
    - see how low (Hz) can it go while still be emacs capable (https://monkeyplush.blogspot.com/2012/09/raspberry-pi-underclock.html)
plans that never realized:

    - pi as electromechanic controller
    - pi as atmel flasher (thinkpad bios fix/coreboot)

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

#744

Post by myhay »

knd775 wrote: post #514
myhay wrote: post #358

Earlier quoted context omitted.

>>1x Raspberry Pi Zero W hopping between my garage and car running a program that collects and displays OBDII and GPS data This is what I also want for my car. I am planning to collect the GPS and car data and answer the eternal question I have .. Which road to work is more efficient in time and gas. :)

Why do you seem to be shadowbanned with two comments? Your first comment was dead before I vouched for it, too.

To be honest I don't know... I'm usually just reading on HN, nothing else...

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

#745

Post by marci »

gregsadetsky wrote: post #684
rockmeamedee wrote: post #666

Earlier quoted context omitted.

Big ups! I use this all the time in winter while waiting for the 55. I definitely assumed you worked at Ubisoft across the street! Btw, from some experience spending cold winters looking at it, it flickers a lot by having so many screen changes, making it tiring to see the screen change so much. L'AUTOBUS - SERA - LA - DANS - 5... - MINUTES - GREG . - TECHNOLOGY. It would be easier on the eyes if it changed less ofte…

Ha, small world :-) Agreed on timing, it could be better. I'll consider skipping some of the words + make them appear slower. Thanks for the suggestion!

BUS 55 - DANS - 5MIN ?

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

#746

Post by Udo »

cr0sh wrote: post #256

I'm kinda concerned by the number of mentions here of using the Pi to run OctoPrint (I think that's right?) to remotely admin and monitor a 3D printer... I've always been of the mind that a 3D printer should never be left physically unattended - even with monitoring (via camera and such), as they can potentially start a fire if something goes wrong (failed print spewing random filament?). Is this a wrong viewpoint? A…

OctoPrint user here. I'm surprised that unattended printing is somehow supposed to be the primary use case for OctoPrint.

For me the point of the software is not to leave a printer unattended for long periods of time. To be honest, I don't see how OctoPrint is fundamentally different from the printers' physical panels in this regard: my printers did not come with deadman switches either! If I wanted to start a 2 week unattended megaprint, I could do that from the standard printer panel as well.

The draw of OctoPrint comes from the fact that it's a standardized and networked UI. It allows you to upload files to your printer, manage its settings, take a video of the print. It's a deluxe firmware.

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

#747

Post by nprateem »

scottlamb wrote: post #126

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've wanted some security cam software to run on a Pi for ages because the stuff shipped on my IP cameras is awful. Do you have any plans to offer a callback system, e.g. so when some customisable event happens (change detection, perhaps between certain hours of the day/night) it could then callback to a custom script for further processing?

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

#748

Post by codetiger »

I used my Raspberry Pi 3 B+ to control all Fish tank equipments remotely. We live in a city (Chennai, India) and my family usually goes to our native for 2 months every year during summer vacation. During these times, it find it very difficult to manage the equipments.

The Raspberry Pi controls 2 Lights, 2 Filter pumps, Cooler, Fish feeder, and CO2 cylinder. Am planning to attach a camera and some sensors to the system as well.

Right now, all these components are controlled by simple scheduling, but am planning to extend the control through a server in future.

The Pi is connected to a 8-Relay board and is attached to a extension power board. So this setup can control just any equipment.

Source Code: https://github.com/codetiger/AquariumControl

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

#749

Post by sirLoaf »

I created a toilet bot for our office. We only have one toilet, which caused a lot of people to walk to the toilet to check if it's free. I connected the Raspi with GPIO door controller and created a python script which makes use of the UCWA library from skype for business and hooked it to a blynclight (status indicator). Now ever coworker can add a specific contact to his Skype for Business favorites and will immediately see if the toilet is free or occupied.
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