1- When I was an undergraduate student, I started taking electronic courses for my elective coursework. It was supposed to be a more science course and not much of engineering but they made a mistake and sent us an engineer instructor. So instead of learning about semi-conductors, he started teaching us about designing circuits, logical circuits and wi-fi transmitters! It appeared to I made a wrong judgment. 2- Couple years back, when the pandemic lockdown started, I decided to use a Raspberry Pi for remote access. One of best decisions of my life! The following decision however wasn't very smart; I purchased a UPS hat just to make sure a full time access while I can't go on campus. Well the hat was designed for version 3 and din't support my version 4 and it didn't worth returning, so it was laying around and reminding me of a wrong decision. 3- Last week I was frustrated by unstable solar panel charger and in a moment of enlightenment I found a perfect solution for i...