If you've done more than a couple of KiCad projects, you've probably noticed the same power supply, USB-C interface, or MCU reset circuit showing up in every schematic — and you've probably redrawn it every time. This video tackles that pain point head-on by walking through Design Blocks, a feature that lets you save reusable schematic and PCB layout fragments and drop them into new projects as pre-wired, pre-routed units.

What makes this tutorial valuable is that it doesn't stop at the schematic side. Many hierarchical-sheet tutorials show how to modularize a schematic but leave you re-placing components and re-routing traces on the PCB. Design Blocks preserve the layout too, which is a meaningful productivity leap for anyone iterating on hardware — think dev boards with recurring MCU footprints, or projects reusing a validated buck converter section.

The channel is tiny (15 subscribers) and the presenter clearly knows the tool. English subtitles are provided, making it accessible. For hobbyists and small-scale hardware designers looking to build a personal library of proven building blocks — the way software engineers reuse functions — this is a genuinely useful workflow to internalize.