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Nope, I don’t have any pictures. It also totally depends on how far they are from the wall and floor individually. I guess it just worked out because of the way I built the desk (which is 3 ft high and ~1 1/2 ft from the wall). But after 3 years it still works great, No fried arduinos!
It will wear out, and you wont go a mile before something smells like its burning. Just no.
so can I basically control my layout with a constant current source, a radio frequency driven mosfet inside each train and an arduino controlled "base"
Under table LED lighting (with WS2821b LEDs)View Instructable »
you can use a regular power supply, make sure it can deliver the right amps. But do not use just the USB plug, that would lead to overdischarge.
all I can say is make sure all LEDs work, the voltage is about 5.5 volts and that the data wire isn't corrupted anywhere. Any of these can cause the LEDs to freak out like that.
you could use these ws2811, p9823 or apa106 LEDs, they all function about the same. Here's the eBay listing:http://www.ebay.com/itm/WS2811-APA106-P9823-F5-5mm-F8-8mm-Round-RGB-LED-chipset-Full-color-LED-Chip-5V-/262557174771?var=&hash=item3d21a08bf3:m:m8T47ldvZXsC047otS-x2Jw
for a mega, just use the same data pin and analog pin, and set the programmer to arduino mega. Everything else is the same.