Profwombat - did you ever manage to get this to work ?
That strip is 12VDC. The Arduino's Digital Outputs are only +5VDC. I'm thinking you would need to up convert the DIO's voltage to 12VDC, by using the 5VDC to drive an optocoupler,
I have connected everything as shown in the images (sorry, they failed to upload).
No, the strip is powered by 12V but it's data line requires a 5V or 3.3V signal.
I don't think that 3.3V is enough. But maybe 5V?
grumpy_mike suggested using a 74hc14.
No, the strip is powered by 12V but it's data line requires a 5V or 3.3V signal.If you apply 12V to the data line, you may damage it.
But, the documentation for WS2811 LED Strip specifically calls for a supply voltage of 12VDC, as everyone has been talking about in this 3 pages of forum thread. AND, the data sheet specs VDD +/- 0.5VDC (again VDD = 12VDC), so that would be a data input voltage requirement of from: 11.5VDC to 12.5VDC.