IoT breakout board pin mapping

I have attempted to use the IoT breakout boards for debugging. The issue I am having is trying to understand how the through hole locations are numbered. With ~40 holes and only 20 numbers things don’t add up. Also teh mangOH board provides 38 connection points. Overall teh use of the IoT breakout board is unclear. With no top/bottom marking (this affects the pin mapping) and no clear way to understand what hole is mapped to what connection point it feels like a lot of walking around in teh dark. If there could be some explanation added to this simple board it would be very much appreciated and helpful.

Thanks
Kas

Hi Kas,

Please see this post

cheers,
Ashish