I am following this tutorial: https://learn.adafruit.com/rgb-led-strips/current-draw
I have strips with 30 led/m, stp16nf06l Mosfets, a 600mA power supply (which I will upgrade later on, this setup is just for testing purposes) an Uno and a few 1k resistors(I only have those left). My question being: When and why do I need the resistors inbetween the pwm pins and the mosfet? And will 1k resistors work aswell? (I saw another tutorial which was pretty similar to adafruits, but they were using 1k resistors.)
2) Can i control multiple strips from an uno? It certainly has enough pwm pins. Should I just buy everything again and make the same setup or can i use the mosfets i have right now for 2 strips somehow? Also: Does it make a big difference if I power the second strip through 2-3m long cables? What do i need to pay attention to? How thick do the cables need to be to be able to handle a 10meter strip (~6A). Thanks in advance.