diff --git a/i2c/echo.py b/i2c/echo.py
new file mode 100755
index 0000000..737cd67
--- /dev/null
+++ b/i2c/echo.py
@@ -0,0 +1,13 @@
+#!/usr/bin/env python
+
+import smbus
+
+bus = smbus.SMBus(1)
+address = 0x23
+
+def send(data):
+    print 'Send / receive: ' + str(data) + ' / ' + str(bus.read_byte_data(address, data))
+
+
+for d in range(1, 5):
+    send(d)