Start of some bumpers
Add some push rods
MicroSwitchHolder and some layout
Temporairly hack into main model
Better microswitch holders giving more ground clearance
Remove rogue echo statement.
Added springy bits

for illustration purposes only :)
Bumper with spingy mounts
Add some push pin connectors
Adjust bumpers, microswitches need to be behind shell
Position Microswitches correctly in main model
Link bumper thickness to dw
Required pins
Some code tidyups
More tidyup, realistically you don't mirror the bumper to put in on, you rotate it.
Tidy up and simplify some positioning
Use donutSector instead of custom work
And tidy up the microswitch plate
Connectors for the microswitches.  So close.
Slight improvement on attach, plus use attach() in main Logobot code