I am starting work on a project that will use a pot and an Arduino Uno to control the brightness of a 12v LED strip. Unfortunately I have no experience with this (yet) so I have no idea what I'm doing (yet). The LED strip is 3m of 5630 LEDs with a recommended current of 8A. I have a 12v 10A power supply in front of me.
I'm looking at this tutorial (http://itp.nyu.edu/physcomp/labs/mo...o-control-high-current-loads-with-an-arduino/) which says I need a transistor if I'm powering a motor, but not if I'm powering a lamp. All the other tutorials I found are for RGB strips whereas mine is just one color, thus this tutorial was the closest thing I could find.
So here's what I think I need to do, which may or may not be accurate:
Use the wall wart for the DC jack on the Arduino.
Splice a negative wire into the power supply and run that to the negative on the LED strip.
The positive from the LED strip connects to ???
So do I need a transistor or not?
As for wiring in the pot, I'm sure I can figure that out. I haven't researched it yet, though, because I'd like to just do one step at a time.
I'm looking at this tutorial (http://itp.nyu.edu/physcomp/labs/mo...o-control-high-current-loads-with-an-arduino/) which says I need a transistor if I'm powering a motor, but not if I'm powering a lamp. All the other tutorials I found are for RGB strips whereas mine is just one color, thus this tutorial was the closest thing I could find.
So here's what I think I need to do, which may or may not be accurate:
Use the wall wart for the DC jack on the Arduino.
Splice a negative wire into the power supply and run that to the negative on the LED strip.
The positive from the LED strip connects to ???
So do I need a transistor or not?
As for wiring in the pot, I'm sure I can figure that out. I haven't researched it yet, though, because I'd like to just do one step at a time.