Hi Guys
Thanks for all the feedback. Let me try to answer your questions.
Not sure what PWM frequency I'm using, whatever the arduino uses standard. (according to the arduino doc it should be
approximately 490 Hz)
Q1: Yes it lights up just fine, and when connected to the "dimming" circuits it also dimms, I just had an idea that I could dimm it more than seems to be possible at the moment and figured it might have something to do with the fact that the voltage at the LED never went below 10V.
Q2: yup, works just fine.
The circuit is as Ronsimpson posted it:
Also the Mosfet is a IRF3205 not 3204 (sorry typo).
The LED strip is this one:
https://www.banggood.com/50cm-9W-18...12V-p-1016898.html?ID=515219&cur_warehouse=CN
OK, I'll try this tonight, as I wrote in my original post it may just be me why has misunderstood how this should work/look.
Once again thanks for all the feedback.
-Jacob