Posts made by Mantvydas Ri

Btw is it normal that after removing GND wire lights are still glowing?

Alright, tested it with 10A 5V power supply. But now lights doesn't work at all. Even from battery it works, but not from the external power supply.
And yes, I have checked that power supply is working with multimeter.
Weird..

But I will try it again anyway- maybe this time i'll be lucky

Tried external power supply, same problem as on Arduino mega. I have also decreased brightness of the bulbs to ensure this is not an issue.
Also, as I said, connecting both ends of data pin most likely solves the problem, but it is a little impractical.

Every pixel looks like this http://www.ipix.lt/image/6kzdh and the other side like this http://www.ipix.lt/image/6kBSl. Don't know if you can see here, but there is written "+" , "DI" (data input probably), and "GND", so I guess contacts are marked correctly.

The ends looked like this http://www.ipix.lt/image/6kFGp but I cut them off because of huge interference (The lights worked after disconnecting 5v pin - probably data pin was colliding with 5v or something ). Now there are just plain wires.

I feel so dumb because I don't even know how and why this happens.
For example sometimes lights just works by simply connecting those pins as they should be, sometimes the lights just blinking randomly, sometimes nothing happens, but this often can get fixed if I attach both ends of data pin to arduino (and sometimes not).

Feeling like I have bought defected strip or just don't have enough brains to connect it

Reversed wiring (connected 5v and ground at the end of strip) and connected BOTH sides data wire (the one from beginning and one at the end). Don't know why, but it started working now. Any ideas now?

Hi! Just bought WS2811 type strip of lights http://ebay.to/2icZpfa and started using FastLed with Arduino Mega to get them working. I wrote a simple script for it http://pastebin.com/RmMqKcgn . However, after connecting them, nothing lights up. But if I touch the ground wire at the end of lights with the data wire at the beginning of the lights, the lights will go crazy and after separating those wires the lights light up as it should be (not all though, few of them are different color, but hey, its something!). What do I do wrong? Maybe I should connect some resistor to the data pin? Or maybe I just got broken lights?
Also I checked with multimeter the begining and the end of the wire. On power and ground cords there is only 1ohm, while data wire has 900ohm resistance. Not sure if it should be like it, so just pointing it out.
P.S. Sorry if I posted in the wrong forum. I'm so desperately looking for any help, because I need to get them running until New Year.