and I'm pretty sure they're the coolest objects I have ever owned. I
, and damned if I know what is going on in there, but it looks simple/cheap as all hell. Help me figure it out, I'll post a build-log/parts list somewhere, and in short-order
So it's about the size of a tennis-ball, made of hard, milky plastic, and it cycles in a smooth, slow gradient between Red, Green, and Blue. (8-Second Video: Globe On
, Globe Off
). That's it. It doesn't look like much, and it's no danger of "blowing anyone away" or anything, but lemme tell you... it has absolutely transfixed
the dozen or so people that've been to my house in the week I've owned it. I'm talkin' young, gadget-savvy folks who absolutely
should know better. But we all love the stupid little thing.
Cracked it open, and inside are three 1.5V watch batteries, 3 LEDs (one each: red, green, blue), a resistor, a switch, a board, and a tiny mysterious shiny black spot.
I'd like to know what method they're using to cycle thru these colors.
This schematic represents my closest attempt at understanding the build
. I'm sure you'll agree that there is at least one key element missing. It is my (unfounded, but)
strong suspicion that this missing element is a very simple one (though I am very interested in answers, simple or otherwise).
* LED board, top
* LED board, bottom
* Switch/Battery assembly
There's a huge chance that I've unknowingly left out something of dire importance. I will try to clarify/photograph anything that is needed. I have the disassembled globe on my workbench as we speak... multimeter at the ready.
Another related question: Would there be any way to run a common anode high-power RGB LED star off of a configuration similar to what is being used in the globe above? I'm interested, very generally, in novel methods that can be used to drive RGB (or separate "R, G, and B") LEDs. I'm slowly getting the hang of PWM and microcontroller/Arduino-based methods, and I like what I've learned... but I've not come across much that deals with any other methods. Thanks to all.