diff --git a/src/local/fetch-dashboard.sh b/src/local/fetch-dashboard.sh
index 812ba89..835def7 100755
--- a/src/local/fetch-dashboard.sh
+++ b/src/local/fetch-dashboard.sh
@@ -1,4 +1,4 @@
 #!/usr/bin/env sh
 # Fetch a new dashboard image, make sure to output it to "$1".
 # For example:
-$(dirname $0)/../ht -d -q -o "$1" get https://raw.githubusercontent.com/pascalw/kindle-dash/master/example/example.png
+$(dirname $0)/../ht -d -q -o "$1" get ${2:-"https://raw.githubusercontent.com/pascalw/kindle-dash/master/example/example.png"}
diff --git a/src/test.sh b/src/test.sh
new file mode 100644
index 0000000..24d1291
--- /dev/null
+++ b/src/test.sh
@@ -0,0 +1,11 @@
+DIR="$(dirname $0)"
+DASH_PNG="$DIR/dash.png"
+FETCH_DASHBOARD_CMD="$DIR/local/fetch-dashboard.sh"
+
+echo "Refreshing dashboard"
+"$DIR/wait-for-wifi.sh"
+
+"$FETCH_DASHBOARD_CMD" "$DASH_PNG" $1
+
+echo "Full screen refresh"
+/usr/sbin/eips -f -g "$DASH_PNG"