I traveled with the Samsung Galaxy S25 Ultra and the Oppo Find X8 Ultra, but only one earned a permanent spot in my travel bag.

Here’s a fun build from [RootSaid] that is suitable for people just getting started with microcontrollers and robotics — an Arduino-controlled two-wheeled robot. The video assumes you already have one ...

These components are probably the most valuable parts you can salvage from old gear. They are essential if you are working on ...