Embedded Systems Weekly – Issue 68

Issue 68 – 2 September 2016

Hardware

Reverse Engineering a Simple Four Function Calculator: die decap

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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!Share on Twitter ∙ Share on Facebook

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.Share on Twitter ∙ Share on Facebook

Software

NASA Systems Engineering Handbook

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ARM Cortex-M, Interrupts and FreeRTOS: Part 1

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Building A C Compiler Type System - Part 2: A Canonical Type Representation

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Neoway M590 GPRS Tutorial: sending and receiving files from/to SD card

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"Reverse Engineering for Beginners" free book

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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.Share on Twitter ∙ Share on Facebook

The Ultimate DIY Microphone (super low self-noise!)

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Omniblox: Eagle BRD 3D viewer

Circuit boards are things of beauty, so we now render them in 3D using nothing but javascript and WebGL.Share on Twitter ∙ Share on Facebook

Photo by Jorge Raul Ovalle Zuleta