Tag Archives: LED

More on building a better moth trap

My apologies for the long interval between my last post and this one. I have been battling with a 300 year old French farmhouse and its needs. I was motivated to make this post by the extensive interest in the … Continue reading

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A better moth trap using LEDs?

Warning: the LEDs used in this project are extremely bright. If you look at them directly you could damage your sight. Definitely don’t look at the UV LED, it may not even appear to be on, but it emits lots … Continue reading

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Brighter, faster, flashes from an LED-based flash gun – part 2

I have spent a little while now looking at the possibility of building a lower power version of the exciting Vela One very high-speed flash gun. Recently, I have managed to squeeze significantly better flashes out  of the 10W COB … Continue reading

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Brighter, faster, flashes from an LED-based flash gun – part 1

This is a quick post to show that it is relatively easy to get very fast, bright, flashes from larger LEDs than those I reported upon in an earlier post. I used the same circuitry as before but this time … Continue reading

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Measuring flash duration with a PIN photodiode

In order to tinker with LED-based flash lighting, it seemed like a good idea to have some way of measuring flash intensity and also flash duration. Intensity seemed like it might be quite difficult to get results in meaning units … Continue reading

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Experiments using LEDs as a flash gun for high speed photography

I recently read on the Dreamingrobots Forum (http://www.dreamingrobots.com/forums/viewtopic.php?f=8&t=2237) about a very fast LED-based flash gun called the Vela 1 (http://www.vela.io/). This flash gun is amazingly speedy, delivering significant amounts of light within 500ns. That’s incredibly quick even by comparison to … Continue reading

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