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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?

#971

Post by lloydpick »

mindcrime wrote: post #937
lloydpick wrote: post #401

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…

What do you use for receiving the radio traffice, something like an RTL-SDR, or something else?

For the ASD-B traffic I use the FlightAware USB dongles - https://flightaware.com/adsb/prostick/

And for the general radio, I use the RTL-SDR Blog USB dongle - https://www.amazon.com/RTL-SDR-Blog-RTL2832U-Software-Telesc...

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

#972

Post by acolumb »

sequoia wrote: post #374

I run a plex media server on my 3b+. The server is on the wall below my router (attached via ethernet), a 2TB HDD sits next to the server. I put movies & TV for my kids on the server, then they can watch on one of two TVs in the house via Roku. It's good for getting them off trashy Netflix movies & making classics (or what I consider classics at least) available to them. I chose this configuration rather than running…

How'd you make the HD spin down automatically?

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

#973

Post by Topgamer7 »

LegitShady wrote: post #599
MikeKusold wrote: post #245

Earlier quoted context omitted.

> 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?

I am not the person you asked but some ideas, in order of most complexity/cost to least. - Some kind of CAN bus hack. They exist. - He has a ford and hardware that can interact with openXC CAN2-2 see here: http://openxcplatform.com/vehicle-interface/hardware.html - He's using bluetooth.

Comma ai has a bunch of car related repos that are open source, one of them interfaces with can via the odbc jack under the steering wheel. Might be able to glean some information there.

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

#974

Post by barryfandango »

elitistphoenix wrote: post #697
barryfandango wrote: post #250

Squeakernet FLP is not a cat feeder, it's a feline lifestyle platform. Current features are largely focused on kibble deployment though. https://github.com/buzzcola/squeakernet/

You look like the author of this? Could we get some more info on the scale and dispenser please?

Yes, I'm the author. Happy to share.

The dispenser is a "dry food/cereal dispenser" like the kind you would see at a hotel breakfast bar. They can be found on amazon in various configurations. (e.g. https://www.amazon.com/s?k=dry+food+dispenser&ref=nb_sb_noss...). A continuous-rotation servo is attached to the crank, allowing the Raspberry Pi to turn the crank to dispense food.

The scale is a cheap kitchen scale (also amazon, I think mine cost $9.) These scales contain a device called a Load Cell. I cut the four wires to the load cell (bypassing all the other electronics in the scale) and ran them to an HX711 chip, which can be had for a few dollars. If you google "raspbery pi hx711" you can see the people's instructions on how to make a Pi scale for various reasons (weighing people, luggage, etc.)

So the scale, the dispenser, the servo, and Pi Zero are put together with a few pieces of wood. Most of the work has been getting the software side working.

Hope this helps!

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

#975

Post by sAbakumoff »

gregsadetsky wrote: post #967
sAbakumoff wrote: post #956

Earlier quoted context omitted.

I am just wondering here - why does not the bus stop have the digital schedule set up? Is it normal for Canada?

Canada's a big country :-) As far as I understand, local transit authorities in every city have the autonomy to decide how they spend their budgets. A digital sign is useful, but is it worth having one at every single stop, considering the cost to buy them, the necessary infrastructure (electricity, internet access), the support costs to repair/replace them, etc.? Also, paper schedules have been part of all stops her…

>> but is it worth having one at every single stop, considering the cost to buy them, the necessary infrastructure (electricity, internet access), the support costs to repair/replace them, etc.?

Well, I just don't recall when I saw a public transport stop that does not have the digital sign here in the Netherlands. The paper version is always provided as well. But I suspect that it works like this in large cities only.

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

#976

Post by capnnemo »

I'm using a raspberry pi as a low latency server to organize and provide a bridge between esp8266's that are running LP flame effects for Capn Nemos Flaming Carnival. You know, for the kids! I've open sourced various aspects, and though it's all a bit disorganized as it is primarily me that uses it, you can find codey bits at https://github.com/burntech, and cool pictures and links at http://capnnemosflamingcarnival.org. Yeah, it's kind of a Burning Man thing. But long term, I hope the tech can serve as a small fast network that controls potentially timing critical things (eg shutting off fire reliably, music-controlled effects, and etc.).

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

#979

Post by JVIDEL »

peteforde wrote: post #720

I started a company that constructed booths which used 70 accurately sync'd Pis with custom PiCams (fitted with lenses) to take pictures of human subjects, for turning them into avatars like this: https://sketchfab.com/3d-models/pete-swagger-walk-a55d807de1... At the beginning of the project, I'd barely powered up the Pis I had collecting dust in my drawer. By the end, I was a legitimate domain expert in several nich…

Side question: how did the company go? and what was the product (the animation) for? games?

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

#980

Post by JVIDEL »

peteforde wrote: post #900
abrookewood wrote: post #810

Earlier quoted context omitted.

The model looks fantastic. Can you share any details on how the project worked or what your company is?

First: sigh. First-coda: past tense Second: I worked alongside a brilliant team with rare knowledge of geometry reconstruction. We took the 70 images of people, algorithmically removed the backgrounds and then used a proprietary process to create a mesh geometry from the intersection masks of those shapes in 3D space, which all had to be carefully calibrated on the regular. That geometry was smoothed to create a vali…

Well that sucks, I could see this being used in VR arcades
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