diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..62e8da5
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,3 @@
+.PHONY: run
+run: ./ap3825i.expect
+	env OUTPUT_LOG_FILE=$(shell date +%Y-%m-%d_%H-%M-%S).date.log ./ap3825i.expect
diff --git a/ap3825i.expect b/ap3825i.expect
index 52c72a2..3064f40 100755
--- a/ap3825i.expect
+++ b/ap3825i.expect
@@ -5,7 +5,7 @@ exp_internal 1
 
 set send_slow {1 0.005}
 
-spawn picocom -b 115200 /dev/ttyUSB1 --logfile typescript
+spawn picocom -b 115200 /dev/ttyUSB1 --logfile $env(OUTPUT_LOG_FILE)
 set term_id $spawn_id
 spawn ./toggle_jg928a_port.sh
 set spawn_id $term_id