Another simple tool: Light LEDs in order

tools/chase.py

+#!/usr/bin/env python
+
+# Light each LED in sequence, and repeat.
+
+import opc, time
+
+numLEDs = 512
+client = opc.Client('localhost:7890')
+
+while True:
+	for i in range(numLEDs):
+		pixels = [ (0,0,0) ] * numLEDs
+		pixels[i] = (255, 255, 255)
+		client.put_pixels(pixels)
+		time.sleep(0.1)