diff --git a/config.ini b/config.ini
index ef2aa391ebaba901c4a27231a7641fee932b03f7..b7d468db9301c14e618c68702fa073d65a79cb85 100644
--- a/config.ini
+++ b/config.ini
@@ -3,12 +3,12 @@ serial_port = /dev/ttyACM0
 baud_rate = 9600
 
 [maze]
-cycle = //---\\---
+cycle = //\\//\\
 y0 = 300
 dx = 100
 dy = 100
 width = 200
-speed = 120
+speed = 150
 line_color = white
 
 [player]
diff --git a/main.py b/main.py
index f4654d464223cf61bf7f9071af17f8ea58c61aee..362ec587b3da664062913b9aad74b5cc00b13b4c 100644
--- a/main.py
+++ b/main.py
@@ -1,6 +1,7 @@
 from paigamu import *
-import serial
 
+import serial
+import time
 import configparser
 import ast
 
@@ -177,6 +178,7 @@ class JoystickRespirometro:
     def __init__(self, serial_port, baud_rate):
         self._state = 0
         self._last_read = 0
+        self.t0 = time.time()
         try:
             self._sercon = serial.Serial(serial_port, baud_rate, timeout=1)
             self._enabled = True
@@ -216,6 +218,9 @@ class JoystickRespirometro:
 
         print(read, dv, self._state)
 
+        with open('data.log', 'a') as f:
+            f.write('{}\t{}\n'.format(time.time() - self.t0, read))
+
     def update(self):
         if self._enabled:
             self.timer.update()
diff --git a/plot.sh b/plot.sh
new file mode 100644
index 0000000000000000000000000000000000000000..fccf29cb591ee64048b46b9ee9e24dba74f228ba
--- /dev/null
+++ b/plot.sh
@@ -0,0 +1,4 @@
+( 
+  echo "plot '< cat data.log' with lines";
+  while :; do sleep .1; echo replot; done
+) | gnuplot -persist