diff --git a/README.org b/README.org
index 448f3cc..f4eb758 100644
--- a/README.org
+++ b/README.org
@@ -13,14 +13,9 @@ picocom /dev/ttyUSB0 -b115200
 * Small card
 ** Set up distance measuring
 #+begin_src python
-from hcsr04 import HCSR04
-import time
+import tablecode.main
 
-sensor = HCSR04(trigger_pin=16, echo_pin=0)
-
-while True:
-    print(sensor.distance_cm())
-    time.sleep(1)
+tablecode.main.distance(16, 0)
 #+end_src
 
 ** HCSR04 Pins
diff --git a/tablecode/main.py b/tablecode/main.py
new file mode 100644
index 0000000..f88f56c
--- /dev/null
+++ b/tablecode/main.py
@@ -0,0 +1,20 @@
+def blink():
+    import machine, time
+
+    print("blink")
+
+    pin = machine.Pin(2, machine.Pin.OUT)
+
+    while True:
+        pin.value(not pin.value())
+        time.sleep_ms(500)
+
+def distance(trigger, echo):
+    from hcsr04 import HCSR04
+    import time
+
+    sensor = HCSR04(trigger_pin=trigger, echo_pin=echo)
+
+    while True:
+        print(sensor.distance_cm())
+        time.sleep(1)