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--- open_sprinkler_docs_oct_2013 [2013/10/08 08:21] – created tomgee
+++ open_sprinkler_docs_oct_2013 [2016/04/21 07:12] (current) – 75.177.137.2
@@ Line 1: / Line 1: @@
 ===== Open Sprinkler =====
+The OSPi board contains a DC-DC converter that generates 5VDC which goes to the Pi on pins 2 and 4. The Pi generates 3.3Volts which is used to power the shift register which interfaces to the relay drivers. \\
 {{:ospi_pic.png|}}
 {{:ospi_cables.png|}}