CS50 for hardware??

Hey guys! I just recently finished cs50 and tuned into hardware, I've thought about scrapping arduinos and jumping into embedded systems lectures but i decided to get my hands dirt first, I bought an arduino and looked up resources to learn but all i found was Paul McWhorter's arduino series which was nice, but i felt it was a bit shallow and too beginner friendly nothing like cs50's hellweeks of C so i was looking for something like cs50 but for hardware? any i