Some readers may recall building a line-following robot during their school days. Involving some IR LEDs, perhaps a bit of LEGO, and plenty of trial-and-error, it was fun on a tiny scale. Now imagine ...

When Aarav Garg was 10 years old, he discovered a YouTube tutorial that would change his life. From his childhood home in India, he built his first line-following robot—a simple project that ignited a ...