I have inherited some lights that I don't know any details of other than they are 12V and ws2811. I also have some 5V ws2811 as well. I'm trying to work out the power requirement to run these strings. I only have a multimeter at my disposal but I have a mate who is an electrician and into solar power so I can probably borrow whatever is required. Can I hook up a string of lights through a controller on full white and somehow measure the current draw or power consumption to get a better idea of the actual use/pixel for the pixels I have.