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Discussing Pulse-Width Modulation
[Michael Kleinigger] posted a lengthy discussion on Pulse-Width Modulation that goes beyond the traditional beginner tutorial. He starts a bit of background info on PWM and a tip about using a camera...
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Reverse Engineering Candle Flicker LEDs, Again
Flickering candle LEDs are seemingly everywhere these days, and like all fads, someone has to take a very close look at the engineering behind them. [cpldcpu] had earlier taken a look at the...
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Reverse Engineering A Real Candle
[cpldcpu] just can’t leave the mysteries of candles alone. We’ve covered his explorations of candle flicker LEDs before, but this time he’s set his sensors on the real thing. [cpldcpu] hooked a...
View ArticleUnphotogenic Lighting As A Feature
Have you ever taken a picture indoors and had unsightly black bars interrupt your otherwise gorgeous photo? They are caused by lighting which flickers in and out in its normal operation. Some people...
View ArticleHow Constant Is Your Choice Of Lights?
The move from incandescent filament lamps to fluorescent, and then LED lighting over the last couple of decades has delivered immense benefits in terms of energy saving, but had brought with it...
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Measuring LED Flicker, With Phototransistor and Audio App
No one likes a flickering light source, but lighting is often dependent on the quality of a building’s main AC power. Light intensity has a close relation to the supply voltage, but bulb type plays a...
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Bringing the Quake Flicker to Life with a Hacked Light
If you ever feel a pang of shame because you’ve been reusing the same snippets of code in your projects for years, don’t. Even the big names do it, as evidenced by the fact that code written to govern...
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