PhyPhox app. Let’s you access every physical sensor your android device SoC has access to (at least for most major manufacturers). Especially on high end phones, they include a huge array of sensors from accelerometers to magnetometers to high accuracy air pressure barometers. Plus it includes a lot of processed sensor outputs, like rudimentary range finding sonar, audio frequency spectrums, etc… And it’s free!

I assume this is pretty basic for people on Lemmy, where you can’t throw a rock without hitting a couple of programmers and Linux nerds, but I always feel so cool using Termux to SSH into my laptop that I use to self-host a couple of things. Makes me feel like a 1337hax0r person.

As a flight computer/logger when paramotoring. Shout out !paramotor@lemmy.world 😊

Here’s a screenshot of flight playback from this evening!

I like JustWatch because it lets you search all your streaming services at once. If you set up a (free) account, you can limit it to just the streaming services you have personally. Handy as hell.

Or get gameboy. No tracking at all

I use the desktop mode of my phone when I want to multitask my laziness in multiple windows simultaneously. I can YouTube using vanced, scroll through Lemmy and read manga.

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I’ve been playing around with Super Image more and more. Recently I used it to upscale some Ghibli stills so I could use them as wallpapers. It’s so neat to me that I can do it all offline, with the power of my own device.

I use Admin Hands for ssh and sftp access to my NAS.

You can turn an old phone or laptop into a wifi extender.

You can use an old iPhone to get iMessage working on an android.

If you attach a lens to it you can use your phone as a binocular

You can use your phone to scan a document and turn it into a digital file.

You can use it to make a signature, upload to computer to make a legally binding e-signature (the security of this is ambiguous, do at your own risk).

Theres probably an app somewhere to use it as a trackpad (if not can somebody please do this).

I’m pretty sure there’s an app to use it as a secondary monitor for your PC or laptop

If you ever repair or fix things, take pictures at various points to have a reference to how it comes back together.

It you ever need to remember anything just take a picture. (Use this all the time at work for stocking things, take a picture of its location address, walk down the warehouse etc)

I think there’s an app to use it as an angle gauge by tilting it. Used for hanging pictures and stuff.

Probably a pair of calipers with the right app and calibration.

You can get a “remote controlled button presser and switch flicker”. You attach it to a light switch or anything else to remotely activate it. Great for turning on and off a space heater or computer.

Use an old one as a remotely viewable security camera, with battery.

Pierce the battery to make a fire (can only be used once)

That’s about all I can think of right now

I use my phone like a sensor for accelerometry when I’m curious about the forces acting on me. Or iI use it as a spectrograph.

Chinese space station tracker with iss detector

A remote when watching films from my PC with kdeconnect

I once considered using my phone as a VR tracking point for full body tracking with slimeVR

rensim! (I tried to share the app, not sure if the link will work) it’s puyo puyo.

All sorts but less so now I use a hardened ROM apposed to a rootable ROM. I mostly use it for media consumption, like spotube, invidious.

The Roland Boss Tuner app to tune instruments. It’s free, it works and it doesn’t show me ads or inapp purchases.