Hello, I am designing a P1 board which has a master prop talking with slave props over I2C or SPI, serial comms of some sort. I also have need of a good interface system, so I am adding a header for the Human Interface Board for Quickstart. This Board leaves maybe 5 I/O pins for general purpose. Which of them are they? Also, the power plug on the HI Board, can this provide power to the host board?
That's not an explosion! That's an unscheduled rapid disassembly!