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Ask HN: What do you do with your Raspberry Pi?
121–130 of 1001 posts
Re: Ask HN: What do you do with your Raspberry Pi?
#122I have one hooked up to my TV on an HDMI port to display all my home surveillance cameras in a grid. Works with any cameras that support RTSP.
https://selfhostedhome.com/raspberry-pi-video-surveillance-m...
Re: Ask HN: What do you do with your Raspberry Pi?
#123A client that I'm consulting was being ripped off by a local IT provider with pricing for on-premises servers & MS software.
I proceeded to rent cheaper equivalent machines off-site.
The IT provider claimed the hardware firewall (Fortigate) was not configurable for site-to-site to the new machines directly (could be, not an expert on those).
Therefore, I ended up purchasing several Raspberries and configuring them as OpenVPN routers that opened up the office LAN to said machines.
Quite satisfying, as it allowed to break the client out of the proprietry software/hardware/vendor chain at a rather small expense.
Re: Ask HN: What do you do with your Raspberry Pi?
#124In production since 2016 with 3 x Raspberry Pi 3s. Very reliable - they only need a reboot once a year. These guys are hardcore - processing bursts of thousands of records from a serial interface 24 hours a day 7 days a week and shuffling it off to the cloud.
Did you do some work to run 100% from ramdisk after boot? Conventional wisdom says that the SD cards should fail eventually from log writes, etc.
Re: Ask HN: What do you do with your Raspberry Pi?
#125Using several Raspberry Pis to monitor CO2 levels in my house. Each Raspberry Pi has a CO2 sensor - wrote a little Python script to retrieve data from sensor and upload it to a server Which is also a Raspberry Pi.
What sensor did you use? All the ones I’ve seen tend to be pretty expensive
Re: Ask HN: What do you do with your Raspberry Pi?
#126A 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 of being able to recompile it in a reasonable time, transfer video segments quickly, etc. I think the biggest missing piece is a real-time clock. Faster flash, builtin SATA, and a builtin NPU would also be great of course but not realistic for $35.
A home theater control system. The Pi uses HDMI-CEC, my Samsung TV's EXLINK (their protocol over RS-232), Roku's HTTP interface, etc. and an Android app is the frontend. I wanted to make this into a nice polished thing other people could use but have given up on the idea for now. The thing is that media components are super finicky, many things need special support written just for them, and you really have to extensively tweak them to see how they function as a whole. (eg does your TV turn off your stereo receiver when it turns off itself. The answer varies based on the model and settings of both components.) HDMI-CEC doesn't live up to its potential in this regard.
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Re: Ask HN: What do you do with your Raspberry Pi?
#127 Pi hole.
SSH server for tunneling
gogs
Re: Ask HN: What do you do with your Raspberry Pi?
#1281. PiHole (seems popular in this thread)
2. OctoPrint for my printer (with a touchscreen because I hate using the knob-based interface on the printer when I'm leveling the bed or doing maintenance)
3. Sitting on my desk because my Terraria server was freezing when saving the world file. Might set it up for emulation in the living room
Re: Ask HN: What do you do with your Raspberry Pi?
#129There's a thousand or so of them scattered around Europe which were the foundation of the company I work at, acting as IoT hubs to communicate with devices designed to alert insurance customers of floods, intrusion, and fire in their homes. We hadn't ever really planned to get into building our own hubs, but the RPi ecosystem meant that when we were forced into that corner on short notice (thanks Smartthings for shutting down app approvals at the last minute) we were able to go from zero to working product in a matter of weeks!
Re: Ask HN: What do you do with your Raspberry Pi?
#130A lot of folks have said "pihole". I have a linux server at home that does my DNS and a bunch of other stuff. I also have a pi3 still in the box. Would there be an advantage to me running pihole on the pi3 instead of on my linux server?
Energy use, probably. I bet the RPi uses a ton less energy than your linux server. But in this case that's not really a tradeoff since you'd be running your server in addition to the RPi.