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-rw-r--r--klippy/extras/pid_calibrate.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/klippy/extras/pid_calibrate.py b/klippy/extras/pid_calibrate.py
index b5dbc773..c7a73195 100644
--- a/klippy/extras/pid_calibrate.py
+++ b/klippy/extras/pid_calibrate.py
@@ -4,7 +4,7 @@
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import math, logging
-import heater
+import heaters
class PIDCalibrate:
def __init__(self, config):
@@ -120,7 +120,7 @@ class ControlAutoTune:
# Use Ziegler-Nichols method to generate PID parameters
Ti = 0.5 * Tu
Td = 0.125 * Tu
- Kp = 0.6 * Ku * heater.PID_PARAM_BASE
+ Kp = 0.6 * Ku * heaters.PID_PARAM_BASE
Ki = Kp / Ti
Kd = Kp * Td
logging.info("Autotune: raw=%f/%f Ku=%f Tu=%f Kp=%f Ki=%f Kd=%f",