I made a DIY surveillance camera from an old (and broken :D) android phone. It uses the IP camera app and custom html code i made myself to show the camera feed in the apk file and the .html file. There isn’t any crazy features, like no remote control (you can do that with tailscale), but it still works well if you don’t need to use it without being home. The code supports live video and live audio but nothing else. I also 3d printed and modified (added a stand with tinkercad) a phone case for galaxy j5 (this is the phone i used), but it didn’t fit as you can see in the image. The apk file is kind of useless unless your camera is at the same ip as mine. Also i didn’t have hackatime properly set up when i started this, but 20min (which actually got logged) is actually pretty close to the time this took. Also @Makkonen helped me with this(i got the idea from him)