restructure code, internalize devices

src/dev/fdm/MakerGear.M2

@@ -0,0 +1,37 @@
+{
+    "pre":[
+		"M108 S255            ; set extruder speed",
+        "M104 S{temp} T{tool} ; set extruder temperature",
+        "M140 S{bed_temp} T{tool}  ; set bed temperature",
+        "G90                  ; set absolute positioning mode",
+        "M83                  ; set relative positioning for extruder",
+        "M107                 ; turn off filament cooling fan",
+		"G28 XY               ; home XY axes",
+        "G28 Z                ; home Z axis",
+        "G92 X0 Y0 Z0 E0      ; reset all axes positions",
+        "G1 Z0.25 F180        ; move z to 0.25mm over bed",
+        "G92 E0               ; zero the extruded",
+        "M109 S{temp} T{tool} ; wait for extruder to reach target temp",
+        "G1 E15 F300          ; purge 15mm from extruder",
+        "G92 E0               ; zero the extruded",
+        "G1 F225              ; set feed speed"
+    ],
+    "post":[
+		"M108 S0              ; set extruder speed",
+        "M107                 ; turn off filament cooling fan",
+        "M104 S0 T{tool}      ; turn off right extruder",
+        "M140 S0 T{tool}      ; turn off bed",
+        "G1 Z200 F1200        ; drop bed",
+        "G28 X0 Y0            ; home XY axes",
+        "M84                  ; disable stepper motors"
+    ],
+    "cmd":{
+        "fan_power": "M106 S{fan_speed}"
+    },
+    "settings":{
+        "origin_center": false,
+        "bed_width": 200,
+        "bed_depth": 250,
+        "build_height": 200
+    }
+}