RC filters and analog signal filtering

A thorough introduction to RC lowpass and highpass filters, done without summoning the ghost of Pierre-Simon Laplace.

Writing a basic Linux device driver when you know nothing about Linux drivers or USB

The VTech Socratic Method

Initial technical exploration of the VTech Socrates line of Z80-based educational home computers. A composite video modification board is developed.

Brushing Up on Hardware Hacking Part 1 - PiFex Configuration

With this post we provide an introduction to a three part series on hardware hacking and how to use a Raspberry Pi as a hardware hacking multitool. This post covers how to configure the Raspberry Pi and describes the first target that we will be using for the series

Demystifying the #! (shebang): Kernel Adventures

Clarifying the shebang (#!) mechanism: A step-by-step look using strace and kernel code shows how Linux handles script execution directly, revealing the shell isn't involved initially.

Print your own USB connector

A weblog about technology including Arduino, Raspberry, Attiny, 3D printing, Electronics, tinkering and all kinds of diy projects.