Cool project!
Have you considered doing this as a kickstarter project with a realistic funding goal?�
You could defray some of your development coats that way.�
—Erik
The error was sooo basic that I was embarrassed to continue the project (and it cost me plenty of $$ that fueled the annoyance).(Snip)Cost... broad estimate $100-$200 probably closer to $200, but depends on the number I think I can sell (buying in bulk reduces the costs, but buying too many means I get stuck with a large inventory of parts)