What is the lowest possible clock frequency at which a microcontroller can still do useful work? Here’s a little project that attempts to explore this weird question.
The story of a silly misunderstanding, by way of which I significantly improved the efficiency of the MagSpoof (Samy Kamkar‘s famous project).
I finished the 595 Beginner’s Guide with a fairly simple example project. As a supplement, here’s another project, based on the same setup but just a little bit more complex, where we manipulate another input pin on the IC – and by doing that, control the output LED brightness!
In this guide I will introduce the cheap and useful IC (Integrated Circuit) nicknamed “595” – a Serial-to-Parallel chip, which is commonly used as an output port expander for Arduino and other MCU projects.