diff --git a/utils.py b/utils.py
new file mode 100644
index 0000000..a9f3a6f
--- /dev/null
+++ b/utils.py
@@ -0,0 +1,2 @@
+def mapped_value(value, in_min, in_max, out_min, out_max):
+    return (value - in_min) * (out_max - out_min) / (in_max - in_min) + out_min
\ No newline at end of file