Hello. I've got a question that arose from a presentation on speed matching done by a couple of our freemo club members for the rest of the group. My dad had asked them how the decoder regulates speed, in which he asked if it used variable DC or pulse width modulation. One of the presenters said that the decoder uses the former instead of the latter. My dad and myself included were skeptical of this answer since variable DC produces quite a lot of heat in comparison to pulse width modulation.

Have been MRH subscriber from the very beginning, but this is my first post to MRH forum.

First some background.

Hi all,

My Bradford Valley Lumber co. layout models a backwoods logging operation, with a single-track line, and only one train running at the one time.  As such, the layout is designed for one person to operate.

While I was figuring out exactly how the BVLC's operations would work, it struck me that I could use Arduino microcontrollers to simulate and semi-automate various functions related to operations.  

Club is considering using Freedom One for sound on our DC narrow gauge loop.

I searched this site for Freedom One and found nothing. Does anyone have experience or wisdom or both with this product line?

Thank you,

DrJolS