diff --git a/es/blatt3/CMakeLists.txt b/es/blatt3/CMakeLists.txt
new file mode 100644
index 0000000..cd76507
--- /dev/null
+++ b/es/blatt3/CMakeLists.txt
@@ -0,0 +1,12 @@
+set(ARDUINO_DEFAULT_BOARD diecimila) # Default Board ID, when not specified
+set(ARDUINO_DEFAULT_PORT /dev/ttyUSB0) # Default Port, when not specified
+
+generate_arduino_firmware(uebung3-1
+    SKETCH uebung3-1
+    PROGRAMMER usbtinyisp
+    NO_AUTOLIBS)
+
+generate_arduino_firmware(uebung3-2
+    SKETCH uebung3-2
+    PROGRAMMER usbtinyisp
+    NO_AUTOLIBS)