diff --git a/Pipfile b/Pipfile
index 0e5ac58a58..452c89165b 100644
--- a/Pipfile
+++ b/Pipfile
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:f44f6ded24cd62e4d29dddd45f8897b9b0383e31abc1a6c582415bb1e1b891cb
-size 1608
+oid sha256:81524c7faf15ca3709aa45731b2ab70e21bee027ef404b67177f2b97f99fa3fe
+size 1621
diff --git a/Pipfile.lock b/Pipfile.lock
index b03aca4860..b80398189d 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:4d95c6ca483d3aa03fd9889d37d70f2125784fbb604d587a1194da558e7b81cb
-size 168718
+oid sha256:d4f522eb3621892e9c97c8c3674fc427d6c368186741d2df03c08d2fe8bb5245
+size 170788
diff --git a/tools/zookeeper/__init__.py b/tools/zookeeper/__init__.py
old mode 100755
new mode 100644
index cd64d3a1fb..42438cb209
--- a/tools/zookeeper/__init__.py
+++ b/tools/zookeeper/__init__.py
@@ -1,9 +1,6 @@
 #!/usr/bin/env python3
-
-# Python library to control Zookeeper
-
-import ft4222  # pylint: disable=import-error
-import ft4222.I2CMaster  # pylint: disable=import-error
+import ft4222
+import ft4222.I2CMaster
 
 DEBUG = False
 
diff --git a/tools/zookeeper/power_monitor.py b/tools/zookeeper/power_monitor.py
index f2796bad31..d3bdd6679f 100755
--- a/tools/zookeeper/power_monitor.py
+++ b/tools/zookeeper/power_monitor.py
@@ -1,30 +1,30 @@
-#!/usr/bin/env python
-
+#!/usr/bin/env python3
 import sys
 import time
-from tools.zookeeper import Zookeeper
 
-# Usage: check_consumption.py <averaging_time_sec> <max_average_power_W>
-# Exit code: 0 -> passed
-#	           1 -> failed
+from common.realtime import Ratekeeper
+from common.filter_simple import FirstOrderFilter
+from tools.zookeeper import Zookeeper
 
 if __name__ == "__main__":
   z = Zookeeper()
+  z.set_device_power(True)
+  z.set_device_ignition(False)
 
   duration = None
   if len(sys.argv) > 1:
     duration = int(sys.argv[1])
 
+  rate = 123
+  rk = Ratekeeper(rate, print_delay_threshold=None)
+  fltr = FirstOrderFilter(0, 5, 1. / rate, initialized=False)
+
   try:
     start_time = time.monotonic()
-    measurements = []
     while duration is None or time.monotonic() - start_time < duration:
-      p = z.read_power()
-      print(round(p, 3), "W")
-      measurements.append(p)
-      time.sleep(0.25)
+      fltr.update(z.read_power())
+      if rk.frame % rate == 0:
+        print(f"{fltr.x:.2f} W")
+      rk.keep_time()
   except KeyboardInterrupt:
     pass
-  finally:
-    average_power = sum(measurements)/len(measurements)
-    print(f"Average power: {round(average_power, 4)}W")
diff --git a/tools/zookeeper/requirements.txt b/tools/zookeeper/requirements.txt
deleted file mode 100644
index 6f70576caf..0000000000
--- a/tools/zookeeper/requirements.txt
+++ /dev/null
@@ -1 +0,0 @@
-ft4222==1.2.1
\ No newline at end of file