diff --git a/plot_voltage.sh b/plot_voltage.sh
new file mode 100755
index 0000000..27a4f9a
--- /dev/null
+++ b/plot_voltage.sh
@@ -0,0 +1,2 @@
+#!/bin/bash
+gnuplot voltage.plot
diff --git a/voltage.plot b/voltage.plot
new file mode 100644
index 0000000..e77805b
--- /dev/null
+++ b/voltage.plot
@@ -0,0 +1,5 @@
+system("cat /tmp/ut803 | grep voltage | grep -v overload | cut -f2 -d' ' > /tmp/voltage")
+plot "/tmp/voltage"
+replot
+pause 1
+reread