I didn't know that castellated holes on a PCB were to facilitate SMT.
Sure makes it look like a stamp though… ;-)
Castellations also enable use in a "burning fixture" like the below. The fixture has bent pins that hold the PCB physically and connect electrically to the PCB's leads.
https://www.amazon.com/DIYmall-ESP32-WROOM-32-Programming-Fi...
alt Hacker News
Castellations also enable use in a "burning fixture" like the below. The fixture has bent pins that hold the PCB physically and connect electrically to the PCB's leads.
https://www.amazon.com/DIYmall-ESP32-WROOM-32-Programming-Fi...