Finishing the weather station prototype PCB, testing the assembled board, discovering an OLED pinout mismatch, and investigating reverse voltage through the LDO regulator.

Assembling and testing a custom weather station PCB, including SMD reflow using a hotplate, lessons learned, and early-stage debugging.

Testing cheap hotplates for SMD soldering and experimenting with Sn42Bi58 low-temperature solder paste.

Building an in-browser Gerber file viewer to speed up PCB iteration