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-rw-r--r--config/printer-prusa-mini-plus-2020.cfg3
-rw-r--r--docs/Config_Reference.md3
2 files changed, 4 insertions, 2 deletions
diff --git a/config/printer-prusa-mini-plus-2020.cfg b/config/printer-prusa-mini-plus-2020.cfg
index a28382ef..98494aa0 100644
--- a/config/printer-prusa-mini-plus-2020.cfg
+++ b/config/printer-prusa-mini-plus-2020.cfg
@@ -66,7 +66,8 @@ step_pin: PD9
dir_pin: !PD8
enable_pin: !PD10
microsteps: 16
-rotation_distance: 9.84615 # 200 * 16 / 325
+rotation_distance: 29.5385 # (200 * 16 * 3) / 325
+gear_ratio: 3:1
nozzle_diameter: 0.400
filament_diameter: 1.750
heater_pin: PB1
diff --git a/docs/Config_Reference.md b/docs/Config_Reference.md
index 5297edd2..7b9a9768 100644
--- a/docs/Config_Reference.md
+++ b/docs/Config_Reference.md
@@ -132,7 +132,8 @@ enable_pin:
# driver must always be enabled.
rotation_distance:
# Distance (in mm) that the axis travels with one full rotation of
-# the stepper motor. This parameter must be provided.
+# the stepper motor (or final gear if gear_ratio is specified).
+# This parameter must be provided.
microsteps:
# The number of microsteps the stepper motor driver uses. This
# parameter must be provided.