0-30V 0-5A Adjustable Power Supply Cover

I designed this cover to make a small and usefull adjustable power supply for my benchwork.
It's so cheap and works stable enough. The module is $4-5 in Aliexpress. Also, I used a laptop battery charger to drop the 220V AC to 18V DC voltage. And, I connect it to the module.
You can watch this video to see connection details:
https:// www.youtube.com/watch?v=zETCGrRj8is
This is the module:
https:// tr.aliexpress.com/item/5A-Adjustable-CC-CV-Display-Step-Down-charge-Module-LED-Panel-Voltme