diff --git a/.gitignore b/.gitignore
index ed909fe..95a1415 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,6 @@
 /postgresql/tutorial/weather/data/
 /arduino/arduino.mk
+/arduino/libraries/.raw/
+/arduino/libraries/*
 .dep
 *.hex
diff --git a/arduino/Makefile b/arduino/Makefile
index a2fd604..6ad64b8 100644
--- a/arduino/Makefile
+++ b/arduino/Makefile
@@ -1,2 +1,17 @@
+EVERYTHING := \
+	arduino.mk \
+	libraries/Bounce/Bounce.h
+
+.PHONY: all
+all: $(EVERYTHING)
+
 arduino.mk:
 	curl -L -o $@ -s http://ed.am/dev/make/arduino-mk/arduino.mk
+
+libraries/Bounce/Bounce.h: libraries/.raw/Bounce-Arduino-Wiring/Bounce
+	ln -svf $(PWD)/libraries/.raw/Bounce-Arduino-Wiring/Bounce $(PWD)/libraries/Bounce
+
+libraries/.raw/Bounce-Arduino-Wiring/Bounce:
+	mkdir -p libraries/.raw/Bounce-Arduino-Wiring && \
+	curl -L -s https://github.com/thomasfredericks/Bounce-Arduino-Wiring/archive/8c6fb3b3437b66215c579d23b716916c9b65881b.tar.gz | \
+		tar xzf - -C libraries/.raw/Bounce-Arduino-Wiring --strip-components=1
diff --git a/arduino/libraries/.gitkeep b/arduino/libraries/.gitkeep
new file mode 100644
index 0000000..e69de29