A while back my printer died, so I dicided to use it's working power supply and build a pretty capable lab bench power supply ! The case was designed by me and
DIY programmable (SCPI) bench power supply | Elektor Magazine
Open source, modular bench power supply | Embedded Lab
Arduino based digital power supply homemade vintage
Building an arduino bench power supply | why = WHY_NOT;
Digital Control for Laboratory Power Supply Using Arduino – Deeptronic
Simple Bench Power Supply that Anyone Can Build!
Variable Power Supply. Arduino compatible | Hackaday.io