Hardware
Reverse Engineering a Simple Four Function Calculator: die decap
How to Build a Class-D Power Amp
The mighty Class-D amplifier—build one yourself and be amazed by its efficiency. The heat sink barely gets warm!
Snubber Capacitors for Complete Insurance of Power Semiconductors
The trend of modern semiconductor technology towards increasingly powerful applications results in the fact that switched currents and voltage levels are continuously increased and that simultaneously the switching speed is also increasing markedly. The developments in the area of power semiconductors include the component group IGBT (Insulated Gate Bipolar Transistor) or IGBT modules. The switching capacity with shortest switching times which can be realized using IGBTs necessitates an extremely low-inductance circuit design. Even the low self-inductance of the power bus may induce dangerous voltage overshoots between collector and emitter which may result in the destruction of the valuable power semiconductors.
Software
NASA Systems Engineering Handbook
ARM Cortex-M, Interrupts and FreeRTOS: Part 1
Building A C Compiler Type System - Part 2: A Canonical Type Representation
Neoway M590 GPRS Tutorial: sending and receiving files from/to SD card
“Reverse Engineering for Beginners” free book
Misc
Playing Light Gun Games on a Modern LCD TV
Chipos81 shows a device that he built which lets you play light gun games even with modern TVs. He explains why light gun games don’t work on modern TVs and then show his solution.
The Ultimate DIY Microphone (super low self-noise!)
Omniblox: Eagle BRD 3D viewer
Circuit boards are things of beauty, so we now render them in 3D using nothing but javascript and WebGL.