It looks like you’re looking for the book, specifically the 2021 edition in PDF format.
The author, (updated for modern silicon), focuses on the PIC16F18877 family. Why? Because these chips bridge the gap between old-school 8-bit simplicity and modern feature sets (like ADCs, PWM, and I2C). "123 PIC Microcontroller Experiments for the Evil Genius"
For the 2021 reader accessing the PDF, the book serves as a bridge between the past and the present. It reminds us that even in an age of Artificial Intelligence and high-level abstraction, the true "Evil Genius" must still know how to manipulate the silicon at the very bottom of the stack. You build a serial terminal "eavesdropper