Low Cost Security Cameras
One of the nice features of the Long Descent, and the coming slow collapse of our society, is that there is going to be a lot of useful tech still available. A Green Wizard will just need to learn how to adapt and reuse this resource to their advantage. A not so nice feature of that same collapse is that your personal and home security is going to be more and more left to YOU. As the money for essential services gets scarce, and cities look for ways to stretch thin budgets, the things you have come to expect, like rapid police response, just won't be there anymore.
Having a home security system will be useful but if you look at the many options on the market now, you find a common factor, they are bloody expensive. Here is a way to cut costs by repurposing webcams from old or damaged laptops.
Pretty straight forward if you have a little electronic or computer skills.
One thing of note not in the video. Some older webcams use 3 volts, not the 5 volts typical of USB cables. Here's a comment from the original video which helps explain what to do:
"If you can't get the webcams to work there may be an additional step that you need to take. Most webcams run at 3.3V but USB provides 5V. Some will be fine with this but others (like mine which was pulled from a Dell Inspiron) will shut themselves off as soon as you try to pull video from them. A quick and dirty way of stepping the voltage down is to stick two diodes in between between the 5V line of the USB cable and the power wire on the camera instead of soldering them directly together. The cathode end of the diodes (the stripe that's on the diode casing) should point towards the camera end. i.e:
USB cable 5V Line ---> Diode (stripe this side) ---> Diode (stripe this side) ---> Power wire on the webcam.
I used 1N4001 diodes since I had them for another project and are designed to carry up to 1A of current. If that doesn't make any sense, you can find a diagram by googling for "hackaday 110436". That will bring up a project that explains it further."
The diagram they mention can be found here, along with another good tutorial on reusing old webcams:
"Laptop Webcam Reuse Made Simple"