Make little fun robots like this Pixar lamp:
https://hackaday.com/2019/05/25/little-lamp-to-learn-longer-...
Ask HN: What do you do with your Raspberry Pi?
511–520 of 1001 posts
Re: Ask HN: What do you do with your Raspberry Pi?
#512I have several of them: * 1 original model that runs pi-hole for the household * 1 RPi 3 running RetroPie for emulating classic video games * 1 RPi 3 connected to an official RPi touch screen display that runs a Home Assistant UI * 4 RPI 3s running as a Kubernetes cluster, mostly just for the fun of setting it up, but I have a few odd jobs that run on them, such as chat bots I don't have a picture of the cluster all…
How difficult was to setup the cluster using kubeadmin? did you run into too many issues because memory, cpu, etc?
It's been a while so the details are not fresh in my mind, but it wasn't the easiest thing in the world. I think most of my trouble came from the general lack of polish on Kubernetes (from a cluster operator's perspective) than from the specifics of the Raspberry Pi. One thing I remember clearly is that kubeadm has completely failed to upgrade k8s from one minor version to the next every time I've tried it. I always end up just saving my k8s resources, blowing away the cluster, creating a new one, and resubmitting the resources to the new cluster.
Re: Ask HN: What do you do with your Raspberry Pi?
#513Keep them in a drawer.
Re: Ask HN: What do you do with your Raspberry Pi?
#514I 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. :)
Why do you seem to be shadowbanned with two comments? Your first comment was dead before I vouched for it, too.
Re: Ask HN: What do you do with your Raspberry Pi?
#515Earlier 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?
Seconded. Please tell us more. I believe Ford has some open stuff you can connect a laptop to.
Tesla. I probably don’t have to say much more.
Here’s an older video with some interesting details: https://m.youtube.com/watch?v=KX_0c9R4Fng
Re: Ask HN: What do you do with your Raspberry Pi?
#516Earlier quoted context omitted.
If yours has wi-fi (Pi 3 and above or Pi Zero W) you can always just leave it plugged in somewhere innocuous as a pi-hole. It's super useful and takes almost no time to set up, provided you can change the settings on your router to use it as DNS.
I'm scared that if the pi is down then the whole internet is down (i'm not always home with my family, so if I'm away I couldn't fix it). How do you manage failover ?
If necessary I can SSH in (if the pi is on) and troubleshoot. No one runs a business out of my home so Internet isn't super critical, and the smartphones have data connectivity if need be. I have a couple fresh SD cards in storage and take quarterly SD card images, so if it fails I don't have to rush out and buy anything. If the pi itself blows up, I can talk my wife through changing the DNS server on the router config page from her laptop, or she can just wait until I get home. Not a huge hassle.
Even so, normally you can set a fallback DNS server on your router, and you could have two little Pi Zeros on a plugstrip in a closet somewhere! (Or just set the fallback at opendns or something)
Re: Ask HN: What do you do with your Raspberry Pi?
#517I don't have a project yet -- but one I'm really interested in is having a Raspberry Pi run and store historical data from an air quality (particle) measurement sensor. I'm hoping to measure how the air quality outside my home (near a freeway) changes during the day and night with traffic, and also how the indoor air quality is impacted. It outputs UART 9600 baud data ( https://sensing.honeywell.com/honeywell-sensing…
Uart is just serial, you’d connect it to your serial pins on the pi and read serial from Linux like normal. Data is whatever the protocol Honeywell is using. Could be any range of things sent in a predictable pattern. Could be timestamp,temp,air quality,status, and then some kind of delimiter like newline or eor. Note the pi devices use 3.3 volts instead of 5 so you have to make sure Honeywell is not sending too much…
actually I looked at it again and the honeywell uses 0-3.3vdc so you should be ok to use that directly. (obviously double check before wiring)
you need to setup the device by sending a few packets to enable sensing/auto-sending of data that is a particular 32byte structure.
Re: Ask HN: What do you do with your Raspberry Pi?
#518...plug it into networks I'm not authorized to with the default password and forget about it...
but I actually use one w/ octoprint for my 3D printer, really like it.
Re: Ask HN: What do you do with your Raspberry Pi?
#519I have 4 running at home as servers: - an OctoPi server, which allows me to manage my 3d printer remotely. - a VPN - a Plex Server, serving media to my TVs and phone. I just ordered the new 4GB Pi4 to replace this one. I’l probably re-purpose it as an OctoPi-like box for managing a CNC. - a seldom-used retro gaming box, that’s actually been mostly by a hacked Playstation Classic
Would you mind going into your Plex server setup a bit? I tried using a Pi before but could barely get it to trasncode anything, and playback was miserable. Now I'm using a Kimsufi server, but I'd prefer to have a locally running server (that isn't my main PC) as my Plex media server
If you have total control of the media files and the clients, you can avoid transcoding altogether.
Everything on my server plays on all of my clients without transcoding. From what I understand, an “Atomic Pi” is inexpensive and can handle a few transcodes at once, if that’s a requirement of yours.
Re: Ask HN: What do you do with your Raspberry Pi?
#520I use my Raspberry Pi 3B+ as an AdGuard Home server, as an OpenVPN server, to wake my PC via WoL, plus as just a basic Linux box that's on my home network that I can remote into from anywhere.
> that I can remote into from anywhere I've been looking to set up something like this, do you have a static IP or use an external server you could recommend?
All you need is a DNS provider with an API, and a check for external-IP change.