Cloud Nightlight Color-Changing LED conversion

Big Clive recently reviewed a cheap cloud-shaped nightlight from China, and later recorded a video showing how to convert it to use color-changing RGB LEDs:

I wanted to build one myself, and already had the LEDs, so I ordered a cloud nightlight from China. It was a little less than $2.00 USD shipped and arrived approximately 5 weeks later. Right away I had problems with it as it was damaged; the plug and circuit board were both loose. I was worried the screw that holds the plug might be stripped, but fortunately it was not and I was able to repair it. With everything in place, I tried it out, and it looks very nice:

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LED Light Bulb Kit from China

DIY LED Bulb Assembled

I’m a huge fan of Big Clive, and watch his videos regularly. Back in December he built a DIY LED bulb kit from China, and as soon as I finished the video I ordered a couple for myself! It’s a fairly simple kit with a lot of potential for customization. There’s a lot of solder joints but the overall assembly isn’t too complicated, and the theory behind how they work is fascinating and not too hard to comprehend. Best of all, with prices well below $2 shipped, they’re cheap fun! I recently assembled one of these kits so I can review it and share what I’ve learned so far.

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Reload Controller header image

Reload Controller

Earlier this year I purchased an Arachnid Labs Re:load Pro, which is an adjustable constant-current load. I’ve always wanted an electronic load for my lab, but didn’t want the spend the money. The Re:load Pro solved that problem as it’s just $125. Sure, it doesn’t sink as much current or have all the options of fancier units, but it does everything I need. For testing panel meters, batteries and LEDs, it’s quite capable. So far, I’m happy.

Reload Controller Main screenOne of the features that caught my interest when I purchased it was the ability to interact with it via a virtual serial port on the USB interface. I immediately got the idea to develop an application that could control a Re:load Pro, but didn’t have time to work on it. Recently however, I started working on serial port projects at work again, and I finally completed my serial port class, called dsub. I needed to test it, and I thought of the Re:load Pro. It was a perfect device for testing. I set about developing an app, and correcting some bugs in dsub along the way. The result is an improved dsub class, and a small application called Reload Controller which I’m releasing here. Read More