Ok, the fault is probably mine but I can’t seem to figure this out.
I have the OSBo, mine is silkscreened “1.0 Rev Nov 2013”
I want to connect a reed switch into the unit to read the state of my garage door.
According to the schematic on github https://raw.githubusercontent.com/rayshobby/opensprinkler-beagle/master/hardware/osbo_v10_sch.png, the rain sensor port has a 33K (RSU) pull up to VCC with a current limiting resistor of 4.7k (RR) and that is connected to P9-10.
But according to the online manual at http://rayshobby.net/?page_id=7708, the rain sensor connects to P9-15. When I short the inputs of the rain sensor connector, I get no change on the web page that shows rain sensor status.
I tried to beep out the connections but I get confused. My RSU measures 29.9K Ohms, not 33K as shown on the schematic.
Can somebody explain my confusion?