Building the keep

Introduction, notes on header height Before we get on to the build, proper, a bit on the pin headers. In recent builds, I’ve moved to elevating" the pin headers by extending" them. This makes placing pins easier. top mounted with 8mm spacers. The IC on is slightly squeezed, isn’t it? Well, it doesn’t matter in practice, but … pin headers sunk The middle matrix header, sitting flush with the bottom pcb.