[MDAWG25]

Originally Posted by Belovan

Thanks for the quick responses, what I am most unsure about is the wiring, we have LPD8806 LED strips, and there appear to be 5 wires coming out of it. From what I can tell, there are 2 power cables, and a PWM. I'm not sure how to wire that to the Arduino, I have a few links to images of what we have.

https://www.dropbox.com/s/oryc62y4i2...2020.39.44.jpg
https://www.dropbox.com/s/3lvl0q6j2r...2020.39.23.jpg

Thanks again.

There are actually only four inputs on those strips of LEDs, but for some reason there are five wires. The SPI bus has two inputs, DI and CL which stand for Data In and Clock, respectively. The other two pins are +5 Volts and Ground. In this picture you supplied https://www.dropbox.com/s/hiqjc8zhsa...2020.39.23.jpg , the order of pins from top to bottom (as marked by the solder pads, circled in black) are GND (Ground), DI (Data In), CL (Clock), and +5 Volts.

The other picture seems to have two wires on the GND (Ground) solder pad... You may need to peel off that hot glue to get a good look at it, but there are only 4 wires needed, not 5.

Which revision of Arduino do you have? This is needed because only certain pins on the Arduino support the SPI bus.