The following changes must be made to your config
-1. alpha_max, beta_max, gamma_max must be correctly defined for homing to work properly even when homing to min
- they control the maximum distance the axis will move before it gives up finding the home switch.
+1. ```alpha_max_travel, beta_max_travel, gamma_max_travel``` must be correctly defined for homing to work properly
+ they control the maximum distance the axis will move before it gives up finding the home switch. They are currently set to ```alpha_max, beta_max and Gamma_max``` (or 500) if not found in the config file.
+NOTE on a delta this needs to be the total hieght (or greater) than yur towers NOT the same as gamma_max.
2. it is best to start from a fresh config
-3. you must delete the config-override (M502) as M203 format has changed (M203 sets cartesian max speeds, M203.1 sets actuator max speeds, no longer uses ABC as these are now reserved for future n-axis)
+
+3. you must delete the config-override (M502) as M203 format has changed (M203 sets cartesian max speeds, M203.1 sets actuator max speeds, no longer uses ABC as these are now reserved for future n-axis). (or for a short while just do M500 as the A B C will be read until it is deprecated, and M500 will save it in the new format)
4. Homing is slightly different, by default it will home X and Y axis at the same time then Z, this can be reversed and have Z home first then X and Y.
the homing_order setting still works the same way as before.
5. The old extruder syntax is no longer allowed so check your config has the latest extruder config like
-```
-extruder.hotend.enable true # Whether to activate the extruder module at all. All configuration is ignored if false
-extruder.hotend.steps_per_mm 710 # Steps per mm for extruder stepper
-extruder.hotend.default_feed_rate 600 # Default rate ( mm/minute ) for moves where only the extruder moves
-etc
-```
-
-and not the old
-
-```
-extruder_module_enable true
-```
-
+ ```
+ extruder.hotend.enable true # Whether to activate the extruder module at all. All configuration is ignored if false
+ extruder.hotend.steps_per_mm 710 # Steps per mm for extruder stepper
+ extruder.hotend.default_feed_rate 600 # Default rate ( mm/minute ) for moves where only the extruder moves
+ etc
+ ```
+
+ and not the old
+
+ ```
+ extruder_module_enable true
+ ```
+
+6. If you use volumetric extrusion (M200 D2.85) then note that unlike the current edge, G1 E5 will extrude 5mm³ not 5mm. Note that in slic3r there is now a smootheware flavor you need to select for gcode generation, which fixes an issue with firmware retract.
+
+7. if you have configured more than 2 extruders you will need to recompile and set ```MAX_ROBOT_ACTUATORS``` accordingly.. https://github.com/Smoothieware/Smoothieware/blob/edge/src/modules/robot/ActuatorCoordinates.h#L17
The following changes must be made to your hardware
---------------------------------------------------