First attempt to implement Force Sensing Resistor autolevel.
Force Sensing Resistor autolevel working but pretty slow.
Don't forget to manage heater / kill pins / LCD during autolevel.
Get fast raw samples directly from the heated bed thermistor ADC cycle.
Probe 7x7 points, extrapolate 9x9 bed_level grid, raise hotend 50mm when done.
Detect lighter touch on the print surface.
Much faster autolevel with Force Sensing Resistors.
Move the end effector back to X and Y home position after autolevel.
Make the first layer slightly thicker.