IN FACT, maybe I should explain the preferred outcome?
I would like to have a single USB connection to this device that would allow me to program it, or charge it...here is a picture of what I have, but it seems to me I have an error. IN fact the more I look at it the more I know I have made a mistake.
I want to charge via USB, I could use OTA to make adjustments, so I could sacrifice the communication if needed. I was thinking diode but now I am thinking removal of the 5V wire between the MC and the Charge circuit.
What do you need to know? I can give you all the information I have but it will be long and wordy.
Essentially I wanted to know if I may have a wiring fault according to my, admittedly, very rudimentary schematic. The more I look at it the more I think I goofed in basic wiring on that 5V rail from the Charging circuit. I will test as soon as I have a chance...
I am really good at what I am good at, and quick to learn other things, but this particular layout is new to me and I am trying to get a good understanding of how that charging circuit integrates with the MC and the step down because I will be using it with ever build I make going forward...well that is, if it works as I intend. The datasheet for it suggests that it will...so here is hoping.
After working though my 5V rail not being needed at all, I discovered that I was working with a faulty adafruit v1 lipo charging board. So I grabbed another, it was also faulty. I am gonna assume that it was a run off problem because I grabbed a version 1.2 from the spare parts bin and it worked perfectly the first time. So after grabbing the magnifier and looking at the faulty boards I discovered some really crappy soldering from the manufacturer. In fact when I cleaned the blob up and got the two connections being two connections instead of one these boards are now also working.
So, it was two issues. I have switched to a Adafruit Huzzah32 which has it's own step down, charger and lipo connections, a little more for the single thing but will save money in the long run because I won't have to buy 3 things and assemble.
I know you were unable to really speak to any particular aspect of my project, sometimes we just need a sounding board, such as it is.