Drill hole (ideally with pillar drill) through SAB 6815a and motherboard simultaneously (picture
for hole position) so that the two circuit boards can be screwed together with the nyloc, thus
preventing separation of the boards and loss of connection.
This shows where to drill the hole on the Borris2 motherboard.
This shows where to drill the hole on the
SAB adaptor pcb.
The holes is drilled through the centre of the legend '0'
This shows that the nyloc nut and washer are fitted on the top side.