1.15mm squares
2.529mm pitch

1.38mm buffer
0.4mm buffer channel width

5mm board radius of curvature

6mm deep pin holes
0.5mm thick hole to bed distance
2.5mm thick floor (and channel floor to bed depth)
4mm channel depth


case radius of curvature 2.5mm
lip seat width 1.5mm
lip width 0.75mm
lip height 2mm

Sanity check - base minus lip is 6.5mm. 


NodeMCU is 48mm by 25.7mm

23mm pin row distance