diff --git a/examples/articleExample.py b/examples/articleExample.py
deleted file mode 100755
index bbfb6c6..0000000
--- a/examples/articleExample.py
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/env pysketch
-
-def setup():
-   def setup():
-    pin = 18
-    clock = 22
-    GPIO.setmode(GPIO.BCM)
-    GPIO.setup(pin, GPIO.OUT)
-    GPIO.setup(clock, GPIO.OUT)
-    GPIO.output(pin, GPIO.High)
-    time.sleep(1000)
-    GPIO.output(pin, GPIO.Low)
-
-def loop():
-    pass
-
-def cleanup():
-    pass
diff --git a/examples/clock.py b/examples/clock.py
new file mode 100755
index 0000000..aef0f60
--- /dev/null
+++ b/examples/clock.py
@@ -0,0 +1,23 @@
+#!/usr/bin/env pysketch
+
+""" Variable Freqency Square Wave Generator """
+
+delay = 0
+p = 0
+
+def setup(freq: (float, "frequency of clock"), pin:(int, "Pin to output on") = 18):
+    global delay
+    global p
+    delay = freq/1000
+    p = pin
+    GPIO.setmode(GPIO.BCM)
+    GPIO.setup(p, GPIO.OUT)
+
+def loop():
+    global delay
+    global p
+    GPIO.output(p, 1 - GPIO.input(18))
+    time.sleep(delay)
+
+def cleanup():
+    GPIO.cleanup()
diff --git a/examples/testexample.py b/examples/testexample.py
index bb17008..da8c9bb 100644
--- a/examples/testexample.py
+++ b/examples/testexample.py
@@ -1,9 +1,12 @@
 #!/usr/bin/env pysketch
+
+""" This sketch emulates a time wasteing tool """
+
 from typing import List
 
 sys = 0
 
-def setup(a:str, b:float, c, d:int = 4):
+def setup(a:tuple, b:[float, 32.34212], c, d:int = 4):
     print("setup("+arg+")")
     print(dir())