Author Archives: admin

L20 Amplifier

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Is Islam a religion of tolerance – or one of discord and prejudice?

Read a really good article relevant to today! Highlights include: “But if Islam does stand for freedom of faith and coexistence, why is it that so many people who call themselves Muslims are in so much conflict, not just with … Continue reading

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YAEL (Yet and Other Electronic Load)

I stumbled on to Kerry Wong web blog when I searched for some ideas on an electronic load.  Kerry also references a tutorial on an Electronic Load for testing batteries by Dave of EEBlog. Kerry uses a lm324 to drive … Continue reading

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EBAY 10Watt LED Flood Light Retrofit

My 20Watt Roll your own RGB Flood Lights take a lot of effort to build. I purchased some 10Watt LED Spot lights from EBAY.  They are reasonably made and very compact.  I also purchased some LED Constant Driver boards from … Continue reading

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Out with the Old, and – What was I thinking?

Going trough display items, making sure they still work, replace the odd LED where needed etc, I very soon realised I still needed a SSR base controller.  the old control centre had two such controllers, one my first design, a … Continue reading

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Out with the Old, In with the New

This year I am upgrading my control center. Gone is the IBM ThinkCentre, the 192 Channel DC DMX sub-rack, the Grinch Dimmer, the USB DMX adapters and the couple of modified PC power supplies. The new Cabinet contains 3x 350Watt … Continue reading

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Temperature controlled Fan

I finally finished one of the outdoor Power Supply Boxes.  It contains 2x 350W SMPSs in it and will be situated in the garden.  The cabinet currently has a 12v computer fan to push air out of the box. Like … Continue reading

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Press Bender

Being an avid DIYer, I always find the need to bend up brackets, even if it is a simple 90 degree bend bar.  Quite often a trip to the local hardware store will reveal suitable substitute brackets. I stumbled on … Continue reading

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Fuse sizing

Math alert: My spiral trees have 42 pixels. That means 42 x3 =126 LEDs per tree. 2 trees are connect each controller. That means controllers have 252 leds. So if we allow 20mA per LED.  That comes to a total … Continue reading

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4Channel Dmx DC Controller – Revisited

I have previously designed and built a 4 channel DC DMX controller. This controller has served well. But I needed to do a quick update for some display items. Firstly I needed to add RJ45s.  They take  up a lot … Continue reading

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