So, I'm installing a power bus (no data transfer) for Arduino, et. al. and would like to mix both Uno and Nano building lighting and other functions. Uno will accept 3-12 volts (and regulate) while the Nano accepts 6-20 volts (and regulate). Also want to use Trinket which is 3-6 volts. (voltages corrected with an edit to this post)

My question is, can I run a 6 volt bus to power all types of devices, or should I run two separate ones. One 6 volt for the Trinket and a 9 volt for Unos and Nanos? What are the drawbacks to using only one?

I had decided after doing research, trying a couple different decoders and also seeing another modelers equipment on standardizing on SoundTraxx specifically Tsunami 2's. Obvious reason being is that each manufacturer has different features that make mixing consists somewhat challenging as well as the functions mapped, etc..

The question is " To what lengths have, or would you go to so as to have THAT model on your layout " ?

I am pretty sure many of us have spotted a item either railfanning or in some photo someplace that piques the interest of the model railroader to the point it transitions from " thats nice " to " I gotta have ". When this bug hits, and you have secured as much research as you think is possible or needed, do  you hope that some company will fullfill your model wish or do you go the " full monty " for a scratchbuilt model ?

Railroads Slashed Jobs In Nov To Lowest In Decades... As Stocks Soared To Record Highs

This article may be of interest to a few who are interested in the economics and business side of railroading, or those who have or want(ed) railroad careers.

The trend won't be news to those working in the industry, of course, but may still provide a useful data point.