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I did something similar. I damaged the 5V supply IC on the OSPi due to an error connecting things. I also wanted a way to power the Pi during short power interruptions to prevent SD card corruption (had it happen several times). So I removed the power supply IC and fed the Pi 5V from a small 12V to 5V converter and fed 12V through the network cable from my wiring closed. 12V supply is powered by a UPS. Was able to find off the shelf parts – wall wart for 12V, power injectors for the ethenet cable, and 12V to 5V regulator. Works great.
Unless you set up accessing OS from the web you can only access it when on your local network, as you have found out. That’s how mine is still set up. There are security issues you need to be aware of if you put it on the web. I believe there are some documents on how to do this but it is a general network issue not something to do with opensprinkler.November 27, 2019 at 10:43 am in reply to: Finishing up python script to monitor pump supply… #63426
I never got any reports that anyone got this working. That would be useful and nice to know. You say “it no longer works” – was it ever working for you? Surprised it doesn’t work because the API probably hasn’t changed. I don’t intend to update firmware (at least at this point) so it works fine for me and I have limited time to support this but I would welcome others additions/improvements/etc. Without more information it’s going to be hard for anyone to help you.October 6, 2019 at 1:14 pm in reply to: Finishing up python script to monitor pump supply… #62857
I finally put this on github. Not really familiar with how github works so I may have done some things in a non-preferred way but it is here:
It works. Not claiming it is good coding… 🙂
I see it includes the original files which wasn’t my intent. My files are the new ones.
Hope this helps others…August 10, 2019 at 1:26 pm in reply to: Finishing up python script to monitor pump supply… #62083
It works very well. I have one sensor on the output of the filter and detect when it gets too low due to a plugged filter or problem with the pump pickup and shut down the system. I also have it send me an email 1 minute after startup of the pressure and notice if it shuts down. I have been meaning to post it somewhere but haven’t figured out github yet… I will try to do that.
Was this every looked into?
Found it here:
Sure would be nice to be able to get the schematic and BOM without having to install Eagle…May 16, 2019 at 6:09 am in reply to: Finishing up python script to monitor pump supply… #60430
Not familiar with how github works – I have only gotten a few files there – but a pull request looks like a good way to go. I will look into that.
You could remove the 5V regulator chip or to avoid soldering just clip the leads at the package. Then power the PI directly and supply 24VAC to the OSPi board. I managed to kill the regulator and desoldered it. I set up the 5V supply to the PI from a UPS so I don’t have SD card corruption issues when the power goes off briefly. Works fine – actually an improvement in some ways.
Where can I find the plug ins by Martin Pihrt? I looked around a bit and can’t find them.
I think this would be a great addition. For example, if you have a pump you may want to see what the pressure is. Guess I should put in a suggestion for addition…
It looks like you are trying to run an AC valve from DC. It will draw quite a bit of current at 24VDC. Ray has written some on the subject. It may be that the valve loads the power supply enough to reduce the voltage too much for the relay to operate. I suggest you measure the 24V supply with the valve on.
I tried this on an older android. Didn’t allow me to add an existing picture either. Any update on this issue?
For anyone else interested here is a video that covers python, api, and json. This one and a couple of the following ones by the same person seem pretty good – not open sprinkler based but similar programming.
I need to run the pump to build up pressure before each zone. See my later post here:
Samsung J7, Model SM-J727U. Android version 7.0. Patch level June 1, 2018. When I click Add Picture it goes directly to the camera.
Master station on delay is only positive and off delay is only negative so that won’t work.
Looks like the only way to accomplish this is with parallel operation (uncheck sequential). If I have a spare/open zone before my regular zones, say zone 1, then regular zones 2-6,with 7 as master and 8 unused I can connect 7 and 8 together with a jumper so either one will turn on the pump. Then program 8 as a non-sequential zone. Say I want to run 20 minutes per zone. 6 zones is 1 hour, 40 minutes total. Set run time for zone 8 to 1 hour and 30 minutes. I am setting zone eight to slightly less than the end time to avoid the pump running past the end of the last zone. If I wasn’t worried about that I could just run the master as a non-sequential zone and maybe that would work fine but with delays between zones and such the exact end time is hard to determine and may not be accurate. Set zone 1 to 30 seconds (first zone usually takes a bit longer to build up pressure). Set the delay between zones to 15 seconds. The master station will shut off during the delays but zone 8 will keep the pump on during those times.
Complex but that’s the only way I know of to do this. I welcome other suggestions.
Nope. This doesn’t work. The master shuts off during the delay. Wish there was some way to do this.October 9, 2018 at 5:47 am in reply to: does anyone know of an uninteruptable power supply that would work on OSPi #52922
I damaged the power supply IC on OSPi by miswiring so removed it. I inject 12V into the unused ethernet cable wires at my router from my UPS and drop it to 5V at the OSPi and put it into the standard Pi power connector. Power the 24VAC input of the OSPi in the normal way for valve outputs. During a power outage the Pi is powered but I can’t run the zones. I use a pump for water supply so I couldn’t water anyway. All the injectors and 12 to 5 V converter are standard stuff from Amazon.
While I have no doubt that’s all true it doesn’t help with where to start to understand how to use it.
Thanks. I found some on the web interface in the manual that is focused on the Arduino hardware.
Yes, second master station. It comes up as M, the same as the first master in the web interface.
Is there any limitation to which station is the master? In the API doc (maybe an old one) the master could only be assigned to the first 8 stations. I was thinking of putting mine at the top end at 39 and 40. I was able to assign them in the web interface. Am I going to end up with any issues with the API? I don’t plan to use the API to change the stations but want to use the API to switch between master 1 and master 2.
The white injection molded case I have is the same one shown in the video link I posted about the new enclosure. At 25 seconds you can (not a good view but it is visible) the area where the 3 push button holes are. That’s where the ethernet jack is located for OSPi.
Here’s is a picture of a case like mine. Note it doesn’t have the OSPi board in the picture.
My real issue is not that the old case needs modification to work – I knew that.
I was more interested in the stand off info. And a drawing with the locations of the other connector cutouts would be great if anyone has that.
Found answers to some of my questions here: