So I'm fairly new to Arduino and C++ and so may be mistaken. That said, I was trying to complete the locally published tutorial and kept failing to get it to work. No matter what I did, the RGB LED wouldn't turn on while following the included schematics.
It wasn't until I noticed a lack of GND connection and plugged the 5V wire shown into the GND did it work.
Was I doing something wrong beforehand or is the diagram just incorrect?