February 28, 2015 at 9:52 pm #35731
after the ars article I thought what another great raspberry pi project. I got a rpi 2 and ospi plus board, put it together, flashed latest rasbian, grabbed the latest software https://github.com/Dan-in-CA/OSPi, got everything secured how i want… then walked outside with it and, see attached.
240v into it. 240v out to pump. I don’t even know where or how it switches zones. This doable? If not what does it take to convert to something my OSPi can deal with?
Attachments:February 28, 2015 at 10:50 pm #35733
This looks like a mechanical sprinkler controller, which I’ve never seen to be honest. My guess is that the 240V AC output is connected to a pump. I am curios how many zones do you have? The only manual I can find is this one:
which doesn’t tell much.
Most sprinkler solenoid these days work with 24V AC (note: NOT 240V AC!). That’s also what most sprinkler controllers work with. If you have a 240V AC pump, you can use a ‘pump start relay’, which you can think of as a sprinkler solenoid, except it’s used to switch a 240V AC pump.
To understand your situation: how many zones do you have? Do you have a pump?February 28, 2015 at 11:58 pm #35734
Here is the intermatic page on it http://www.intermatic.com/en/Products/TimeSwitches/MechanicalSwitches/SpecialtySwitches/R8800T8800/R8816P101C.aspx
yes the 240v ac is connected to a pump. I’ll manually click through it tmr and see how many zones. I’ll take apart a bit see if i can get some pics of how the zones are wired or how it switches to them.March 1, 2015 at 2:22 pm #35756
ok here are more pics of the intermatic wiring. I have a pic with the yellow dial off. I understand the wires coming from the circuit breaker, and the wires going to the pump, i’m just still not sure how this switches zones. Seems to be 5 zones. To switch to them with this I have to switch it off then to manual. that fires on zone 1 or what I’ll arbitrarily call zone 1. then I have to switch it off again and back to manual. That clicks in the next zone. So the second time I did it I labeled all the heads 2 where they were on. Then I did it a 3rd time I labeled all those 3. By the time I did it a 6th time my #1’s were coming on again.
Attachments:March 1, 2015 at 2:26 pm #35760
And finally here are the pump specs attached.
So from amazon I’ll grab this: http://www.amazon.com/Orbit-57095-Sprinkler-Weather-Resistant-Outdoor-Mounted/dp/B000VYGMF2/
and this pump start relay you mentioned should work: http://www.amazon.com/Orbit-57009-Sprinkler-System-Horsepower/dp/B000I19I5E/ref=sr_1_1?ie=UTF8&qid=1425237870
I’m still lost on how this would wire up to the OSPi esp controlling the zones. Any guidance appreciated.
Attachments:March 1, 2015 at 2:36 pm #35762
this seems to explain it pretty well: http://waterheatertimer.org/pdf/How-to-Set-and-Troubleshoot-Intermatic-sprinkler-timer.pdf
#5 says the sprinkler valve advances each zone. Does this mean even if i get this working I wouldn’t be able to, for example, just turn on zone 4? I’d still have to cycle through them all like I do today?
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