Why could I possibly want to redesign an Ali Express DCDC 3 times? I'll be talking at the RSGB Convention on the importance of switch mode power supply PCB layout in a month's time. Would be great to see you if you're around.

PSU dragged into the modern era by adding a (horribly hacky) Arduino Ethernet to RS232 adapter. Now all my older test kit can be accessed by any machine rather than "the special raspberry pi plugged into everything"