Live data from Hacker News

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

news.ycombinator.com

461–470 of 1001 posts

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

#461
post #389

Earlier quoted context omitted.

How do you deal with it breaking things like Amazon-based UI(Fire, Mobile shopping etc...)?

So far I have not found anything broken yet. I think I would go for a whitelist in that case.

I tried that in the past. Unfortunately shopping and multiple FireTV apps would break due to non-trivial data being sent from multiple domains.

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

#464

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 been looking for something like Moonfire! Do you have any recommendations for an outdoor camera, I was looking at Lorex but don't have much experience? Thanks!

I have a Dahua IPC-HDW5231R-Z that's worked quite well for me. But I haven't tried a lot of cameras, and your needs and budget may vary, so look at the ipcamtalk cliff notes: https://ipcamtalk.com/wiki/ip-cam-talk-cliff-notes/

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

#465
I keep buying them, but so far the only thing I've done with one was years ago when I entered an RPi-powered "pumpkin computer" as the IT department's entry to the company jack-o-lantern contest.

I keep meaning to buy a bunch of 'em and build a portable Erlang/OTP cluster. So far I've only done the "buy a bunch of 'em" step ;)

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

#466

2 Pis for dealing with ADS-B (airplane data), one for 1090Mhz, the other for 978Mhz. I could run that on the same one, but seemed easier to just split them up given some of the software is a bit picky with device IDs. The 978Mhz is much quieter than the 1090Mhz, so I also run a private SpyServer ( https://github.com/lloydpick/docker-spyserver ) for listening to radio transmissions. 1 Raspberry Pi for a running a very…

Love the sitcom sound thing!

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

#468
post #457

I live in an apartment with quite strict fire-protection standards. Due to the fact that I have a cat that absolutly loves to go outside, I needed to find a solution for him to get outside without a catdoor trough my door. So I installed a fire-protecion-approved door drive that is hooked to a raspberry pi. Another raspberry pi then analyzes a video stream and detects my cat. If my cat is in the frame for n amount of…

Wow. I literally just sat down to relax after building a cardboard prototype cat door fitting in my open window in winter. You just made me feel partly inferior, and partly like I'm in good company

Now check out this project: https://www.youtube.com/watch?v=1A-Nf3QIJjM

A cat door that can tell if the cat has a mouse it's going to "gift" to you, and locks to keep the cat out.

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

#469
post #431

Earlier quoted context omitted.

Why do you use two separate pis for it?

I'd imagine the processing power required to detect whether or not a video feed contains a cat doesn't jive well with sharing a CPU with something presumably-realtime-sensitive like driving a motor to open a door.

You are exactly right. Before I "optimised" the image recognition the whole detection part was running on a Mac Mini. I also like to "separate concerns". The Pi that is handling the door opening runs Alpine with a read-only file system so whenever there is a power outage or whatever it boots into a known good state. The image processing part is behind a big UPS and is running with a writable file system.

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

#470
Turned a Pi 1 into a DHCP server at work to replace failed windows server.

Got a Pi Zero at home, but only used it to play with GPIO and i2c, i like to poke around in drivers to get more insight into how different hardware interfaces and protocols work over these interfaces.

Post reply on HN