Now that I have been working with the proposed control system I realize the subject boat (to be controlled) does not have to be as big as I first envisioned. The first tests will be remote basic control. Just taking control response and range into consideration.

To me that indicates I can run early tests on a smaller and cheaper to build model boat. The smaller size will also mean a smaller single motor will be needed. Less battery size will also be a benefit.

For these reasons, I am considering downsizing my first vision of the model boat required. This change justifies my plan to start with the control system first. I am learning what I need as I go. I am not sure when I will be able to commit to the actual boat selection.

At first I was thinking the bigger the model the better. Still a good plan but a lot more cost than needed for an untested communication system. I was thinking of about a 48+ inch length and a 10-12 inch beam.  Now I am considering 24-36 inch length and as wide a beam I can find for stability (and space to work)

If plans go astray, I will have less invested in this experiment. My biggest concern is the reliability of the wireless network. I will spend a lot of time testing that before I have to figure out how to put it in the boat.

The second concern is water proofing. I have built model boats and know I have to seal the electronics from the moisture. I am using an experiment board for now. Next step for installation in the boat will be a prototype board. This will provide permanently soldered components and connections. It will also be larger than a custom designed circuit. I do not know exactly what size the prototype board will be. I have a general idea from the boards I know that are available. So that is why I think I can downsize the model.

The truth I have considered is the first test vessel can be a very simple and crude “pointy box” with a motor and rudder. Ugly yes, but a consideration. I’d rather have a scale model looking test bed for the pictures, but I can be practical if I want or need to be.

When I get to GPS and other enhancements, then I will have to go to a larger test platform. Perhaps then I will include dual motor controls. Fun to think about but first things first.