Pixie 16 Rextin strings won't light others will

[TWH]

Ok I am new and I apologize if this is a common thing and I missed something. I tested a string of 50 generic pixels from Amazon and everything worked fine. I purchased and punched about a 1000 Rextin pixels and did not test before. (big sigh) Started testing single strings of Rextins on the Pixie 16 and nothing. Put a sting on the bench cut the plug and applied 5v. They work fine. Have triple checked wiring from string to phoenix connector to board it is right. I am baffled. 

Any guidance or if you can steer me to a thread would be appreciated.

Pixie 16 5V Controller

Rextin RGB pixels 5V 50 string

S6 Software High Speed Dongle

 

[Jimehc]

Did they come with JST connectors ? I will note that the Data only travels in one direction - it is possible that you are inputting to the wrong side of string...

Just a guess..

[TheDucks]

I have the 12V versions ones @Jimehc mentioned. They work fine on a Pixie8, i mixed with HC ones (Yes, I know about mix issues)

ON THE BENCH? You have a 5V SPI test box?

I do recommend you connect or cap the + power inject lead at both ends. Don't let that flop

The JST pigtail (supplied) will only connect at the IN end

[randyf]

Verify the speed for strings on the Pixie.  While I've found some newer strings to work at either 400khz and 800khz, I've found a number of strings that will only work with one of the two.  Bit me again for my Halloween display (what was that mark I put on the controller and strings?). Fortunately, I only had to redo one string.

Also verify that they are in fact WS2811; if you got older strings, they may not be, and you may need to configure the Pixie appropriately.