I had a lot of old photocopy machine so I take motor from it and try to make Fan With Brushless Motor From Old Photocopy Machine. I use 12V 15A PSU and 12V 4Ah battery for run it when power down. I hope you like my project.
12V 15A Switching PSU video below. I test it by make 775 Motor Flexible Shaft Dremel Tool
You can download my gerber file below and send it to https://jlcpcb.com/m for make PCB online, only 2$ for 10PCB with high quality. I alway do that, i think you can try.
Here is 220V to 24V 15A Power Supply make from old computer PSU
Here is DIY Soldering Iron Station
Make a Box
I take motor from my old photocopy. it is brurless motor so it need speed control circuit for run. You can download all file below