diff --git a/tuhi/util.py b/tuhi/util.py
new file mode 100644
index 0000000..e8ac1ee
--- /dev/null
+++ b/tuhi/util.py
@@ -0,0 +1,24 @@
+#!/usr/bin/env python3
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+
+
+def list2hex(l, groupsize=8):
+    '''Converts a list of integers to a two-letter hex string in the form
+    "1a 2b c3"'''
+
+    slices = []
+    for idx in range(0, len(l), groupsize):
+        s = ' '.join([f'{x:02x}' for x in l[idx:idx + groupsize]])
+        slices.append(s)
+
+    return '    '.join(slices)
diff --git a/tuhi/wacom.py b/tuhi/wacom.py
index 11292b0..73e13c0 100644
--- a/tuhi/wacom.py
+++ b/tuhi/wacom.py
@@ -26,6 +26,7 @@ from .drawing import Drawing
 from .uhid import UHIDDevice
 import tuhi.protocol
 from tuhi.protocol import NordicData, Interactions, Mode, ProtocolVersion
+from .util import list2hex
 
 logger = logging.getLogger('tuhi.wacom')
 
@@ -108,18 +109,6 @@ def b2hex(bs):
     return ' '.join([''.join(s) for s in zip(hx[::2], hx[1::2])])
 
 
-def list2hex(l, groupsize=8):
-    '''Converts a list of integers to a two-letter hex string in the form
-    "1a 2b c3"'''
-
-    slices = []
-    for idx in range(0, len(l), groupsize):
-        s = ' '.join([f'{x:02x}' for x in l[idx:idx + groupsize]])
-        slices.append(s)
-
-    return '    '.join(slices)
-
-
 def list2hexlist(l):
     '''Converts a list of integers to a two-letter prefixed hex string in the form
     "[0x1a, 0x32, 0xab]"'''