I always want to have those huge bench power supply with adjustable voltage of 1-30V and current of 0-5 amp, but they are too expensive and too bulky to me, and so I have always wanted to build one by myself. I think 1-20V @ around 1.5 amp is all that I need.
I have tried many times, burned 2 nano boards, 1 min pro board and some dollar components, and spent more than 2 weeks getting nowhere. The attached photo is one of them.
Any tips will be great!