I will mention as well that for board to board interconnect, like in this situation with a Pro-Mini onto a main board, where possible use machine pin sockets and pins (aka, turned pin) rather than the usual square pin ones, they have a lower profile, look better, make better contact, don't come apart so easily, and importantly for DIY, the sockets can very easily be soldered top and bottom as the plastic block does not sit against the PCB directly.
On Wed, Aug 1, 2018 at 1:02 PM, Vagulus
<rick@...> wrote:
One of the proprietary breakouts is the Arduino Pro Mini - the brains of the operation - which has a footprint like this
