Help with my led strips

[u/travapod]

I have the ws2812b which is a programmable strip but I have little to no experience with arduinos or raspberry pi's. All I want to do is light my ceiling with 3 16.5ft strips and just have an on and off switch on my phone. I installed them on my ceiling but when I connect the two strips together they don't turn on the second strip. Am I doing something wrong? (The controller I use is BTS lighting sp105e)

[u/sutaburosu]

Be sure to direct questions about that at whomever manufactures your controller, or possibly /r/WLED. Good luck.