Load testing the USB-C and 3.3 V regulator building block board, including short-circuit behaviour, PPTC protection, and sustained 500 mA output testing.

The first assembled batch of my USB-C and 3.3V regulator building block board arrived from JLCPCB, ready for inspection, bring-up, and load testing.

Refining an RS485 breakout board with 48V passthrough by removing the RJ45 connector, switching to screw terminals, and separating the 48V and logic ground regions.

Designing an RS485 breakout board with screw terminals, optional RJ45 cabling, selectable termination and biasing, and 48V passthrough protection.

Designing a small USB-C breakout and 3.3V regulator building block board for future embedded and prototyping projects.

Creating reusable PCB modules for common circuit functions, with a focus on faster prototyping, safer regulator designs, and more production-ready hardware.