Guide to share Bluetooth device pairing between Ubuntu and Windows by extracting and modifying LTK, IRK, and address.

Replace a NAS with an OpenWrt router running Rclone to mount a cloud drive via WebDAV, then share it over Samba for Xiaomi camera video storage.

An overview of number system expansions from natural to complex numbers, driven by the non-closure of arithmetic operations.

Overview of discontinuity points in functions, including first-kind (removable, jump) and second-kind (infinite, oscillatory) discontinuities.

Demonstrates how to compute f^{(n)}(0) for f(x)=x^2 ln(1-x) using Taylor series expansion and Leibniz rule, showing their equivalence.