This video breaks down a clever step-by-step guide on how to turn a standard old USB cable into a fully functional USB OTG (On-The-Go) adapter. Right from the start at 00:08, the casing of the Micro USB plug is sliced open with a utility knife and the old wires are desoldered from the board. The video helpfuly overlays a wiring diagram around 03:00 to illustrate how the VCC, D+, D-, and GND connections map between the plug and a female USB-A port, including grounding the ID pin so the phone recognizes connected peripherals as a host.
Once the soldering is complete and insulated using heat shrink tubing shrank down with a lighter at 03:30, the video shifts into a series of real-world capability tests. Around 04:20, an HP flash drive is plugged into an Android smartphone, opening the file manager to view its contents without a hitch. The creator then plugs in a wired optical mouse to navigate the UI, hooks up a desktop keyboard at 06:05 to type in search queries, uses the phone to charge a secondary device, and powers a small USB LED light module.
It's a very satisfying and practical tutorial that shows just how much utility you can salvage from broken or obsolete cables with a soldering iron. The camera work provides crisp close-ups of the delicate pin soldering, making the project easy to follow for anyone interested in basic electronics tinkering.