this post was submitted on 21 Mar 2024
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Selfhosted

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A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

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[–] [email protected] 19 points 7 months ago (4 children)

The value proposition of old or used android phones as SBCs is insane! You've probably got some in your drawers, or can at worst buy some carrier locked ones for 30$. You get a device with better compute than a raspberry pi, with a screen, cameras, speakers, flashlight and battery attached!

Personally, I use them to run and monitor my 3d printers.

[–] [email protected] 8 points 7 months ago (2 children)

In my experience using an older android phone for self-hosting, the downside was a lack of ports and I/O. Being stuck with a single USB 2 interface and wifi was less than ideal for my use case.

[–] [email protected] 2 points 7 months ago

USB/IP for a KVM switch might still work, as long as termux supports all that

[–] [email protected] 2 points 7 months ago

Imagine the single USB C port being 40Gbit/s or even 80Gbit/s (USB 4 Version 2). Given a nice docking station and some additional enclosures, you could technically even connect hard drives and run the phone as a low-power NAS. Or/and as a multimedia station for your 4K TV, I mean the integrated GPUs are usually more than capable enough.

A bummer that they stick to USB 2 speeds, even for most high end phones.

[–] [email protected] 5 points 7 months ago (1 children)

The battery might prove to be a liability.

[–] [email protected] 3 points 7 months ago

Yeah, if they are old enough those might be removable? Then again, from that time period they might be slower than RPis...

[–] [email protected] 2 points 7 months ago

I have an old phone as a bedside clock with Home Assistant as the Dash

[–] [email protected] 2 points 7 months ago (1 children)

Do you have good resources, advice or experiences to share for somebody wanting to set their old Androids to work?

[–] [email protected] 2 points 7 months ago

I don't have a particular guide at the tip of my fingers, but I can share some recommendations based on my experience:

  • prefer a phone with USB-c if you plan on connecting USB things to it. the otg adapters for micro-b are kinda hit and miss when it comes to keeping the phone connected to power as well.
  • look out for clearances of those carrier locked prepaid phones from physical stores, you can get nice devices for nearly nothing
  • whatever you're running on the phone, make sure it starts at startup, so you don't need to go launching everything if you reboot for some reason
  • if the phone is"mission critical" e.g. random restart while in the middle of a print is unacceptable, turn off all the automatic updates and such.
  • a VNC server has been helpful, to remotely poke at the phone if I'm too lazy to go do it physically
  • get something that'll keep the screen off the phone on. I've encountered reduced performance regardless of what battery optimizations I've turned off without doing that but YMMV depending on ROM.

I fully expect the screen thing and the batteries bring in there constantly charging to kill the phones I'm using eventually, but it's something I expect and accept. my octoprint phones have been fine so far, for a bit over a year 🤷‍♂️

[–] [email protected] 17 points 7 months ago

I've tried hosting an nginx server. It is fun, but I wouldn't rely on it for production use cases.

I've also seen some people run docker on their android devices.

[–] [email protected] 15 points 7 months ago (2 children)

I've worry about the battery, being plugged in for ages, without some sort of additional BMS like AccA.

[–] [email protected] 2 points 7 months ago

If you wanted to do something like this you could put the charger on one of those electrical plugs with a timer, or a smart plug that's switched on when the battery reaches a certain threshold

[–] [email protected] 9 points 7 months ago* (last edited 7 months ago)

Looks like their website is hosted on a low-powered Android as well... at least it doesn't load at all here. Edit: now it worked

That said: I tried it before and while it does work it ended up being too limited and annoying. I am planning to try again with a device that has basic PostmarketOS support though. Not enough to be usable as a phone, but as a server it might work if I can get the network over USB work reliably.

[–] [email protected] 7 points 7 months ago

If only modern kernels weren't a problem. I wish you could just install new OSs like on PC.

[–] [email protected] 5 points 7 months ago

I ran a Minecraft server on termux and (IIRC) AnLinux once. It worked surprisingly well.

[–] [email protected] 3 points 7 months ago* (last edited 7 months ago)

Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:

Fewer Letters More Letters
HTTP Hypertext Transfer Protocol, the Web
IP Internet Protocol
NAS Network-Attached Storage
RPi Raspberry Pi brand of SBC
SBC Single-Board Computer
VNC Virtual Network Computing for remote desktop access
nginx Popular HTTP server

6 acronyms in this thread; the most compressed thread commented on today has 7 acronyms.

[Thread #619 for this sub, first seen 21st Mar 2024, 23:55] [FAQ] [Full list] [Contact] [Source code]

[–] [email protected] 1 points 7 months ago

I am trying to lear basic HTML/CSS/JavaScript ( again, last learned HTML back in the 1990's, am using "JavaScript: The Good Parts" & other books ),

& have discovered that you can have, on the same phone/tablet, Termux/Nginx running,

you have to feed /data/data/com.termux/files/usr/etc/nginx/nginx.conf the root-dir you want it to use

( which is actually in a proot-distro install, down below

/data/data/llcom.termux/files/usr/var/lib/proot-distro/installed-rootfs/ ... )

.. and then you can have your browser hit

http://localhost:8080/

and it'll grab index.html.


Notice that that is http, NOT httpS.

None of the browsers I've tried can get the default connection to localhost, because they all default to https, & nginx isn't serving https.

That wasted an entire fscking day, to discover.


Now learning can begin!

[–] [email protected] 1 points 7 months ago

If phone has supported USB networking and close to mainline kernel in PostmarketOS, you can try that.

[–] [email protected] 1 points 7 months ago

you can run tor on it