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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?

#991

Post by tmaly »

Aromasin wrote: post #955
tmaly wrote: post #943

Earlier quoted context omitted.

Curious if you have any watering solutions for external gardens using a Pi?

Sure! You can buy electric water pumps fairly cheap online. They normally come as 12V devices so you'll have to use a relay and a 12V supply, and some sort of circuit to drive the relay using the 3.3V GPIO from the Pi. You can control the pins using Python and the RPI.GPIO library. I personally use a Zerodis DC 12V Homebrew Beer Pump (although there are about 50 other types on Amazon) and a length of hose pipe which…

have you seen any GPIO devices that can multiplex a water pump onto many water lines?

I have many rose bushes peonies that cannot be watered very frequently, but when you do water them, they need a good amount of water.

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

#992

Post by prometheus76 »

myhay wrote: post #358
el_benhameen wrote: post #179

I love and hate this question! I've always been curious what others do with them, but I just convinced myself not to buy a 4 and I'm sure this thread will give me reason to reconsider. -1x Raspberry Pi Zero W in my garage running my drip irrigation (a relay board connects it to standard 24V irrigation solenoids) -1x Raspberry Pi 3 B+ in my office running a dynamic dns script and sitting behind a forwarded port for ea…

>>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. :)

I tried something similar and was astonished at the amount of variance caused by stoplights and weather. Because of that, it's hard to get a good dataset for comparison.

In the end, because of the variance caused by external factors, there was no clear winner in my case, so I now use an app from random.org to flip a coin and follow the results accordingly. That's not because either way is better, but this way if I have a long delay for some reason, I can blame it on a bad coin flip.

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

#993

Post by saltcod »

DrAwdeOccarim wrote: post #521

I have an old Raspberry Pi 1 that runs headless raspbian with a set of cheap speakers plugged into it and an old usb wifi adaptor. It has only one purpose: to play a wav file of a telephone ringing for one minute. My spouse does not ever have the ringer on her cell phone. So when I am out and I need her to look at her phone, I VPN in to my home network, ssh into the pi using Terminus on my iphone, and 'aplay' the wav…

OMG Please tell me more about this! This is precisely what I need!

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

#994

Post by thehashrocket »

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…

That is seriously cool! Way to go!

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

#995

Post by tru3_power »

a_lifters_life wrote: post #913

call me a little paranoid but - a RPI security camera. I have it running locally on my network, capturing still pictures of cars/people/things walking by (I live near a train). Its really just a passive monitor, but I'd like to add more difficult things to it like tell me if someone comes within x feet of my house - phone me, or something, it works for now though.

got any tutorials you can point me to for something like this? I want to make a front door peep hole camera after someone recently stole a package from my apartment entrance.

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

#998

Post by ric2b »

treelovinhippie wrote: post #584
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…

What Plex install guide did you use? Few months ago I tried to install Plex to a pi already running Pihole but couldn't get it to work.

You can run plex via docker, if that's ok with you. But it needs network mode "host"
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