Added Lichuan servo motors contributed by Niclas Hedhman.

libtest.scad

@@ -92,6 +92,7 @@ use <tests/rockers.scad>
 use <tests/rod.scad>
 use <tests/screws.scad>
 use <tests/sealing_strip.scad>
+//use <tests/servo_motors.scad>
 use <tests/shaft_couplings.scad>
 use <tests/sheets.scad>
 use <tests/SK_brackets.scad>
@@ -430,13 +431,14 @@ cable_strip_y = sheets_y;
 box_sections_y = batteries_y;
 BLDC_y = steppers_y;
 
+*translate([0, transformers_y])
+    servo_motors();
 
 translate([x4 + 200, belts_y + 58]) {
     belt_test();
 
     translate([0, 60])
         opengrab_test();
-
 }
 
 translate([x4 + 175, belts_y, -20])