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I have the same brand flow meter, 25mm version. I believe its 0.016067L/pulse from data I have (1 pulse/sec = 0.964LPM). The closest open sprinkler can be configured to is ether 0.01 or 0.02 L/pulse. Planning to fit an Arduino nano “in line” that will convert the (3 wire) pulses to a dry contact at say a 15:1 ratio so I can get the flow monitoring l/pulse setting closer. Just waiting on the relay module, the rest has been bench tested..
4-20mA signals are standard for industrial applications. I believe you will need to read voltage so you will need a resister across the output sized to give you the required voltage drop across the resistor. If you used 250ohms it would give you a 1v to 5v signal.
I just ordered an Arduino pro mini, plan on connecting to my flow meter to read the pulses and report back to a raspberry pi that will log water flows for each zone, graph etc etc.. or Ray will beat me and add flow to open sprinkler.
The flow meter I have is:
http://www.nymet.com.au/valves/1flowsensor.html
was quite cheap on ebay! 🙂 🙂 🙂To modify water levels I’d much rather use
http://os-‐ip/co?pw=xxx&wl=30
and not worry about turning on/off other configuration options.Added support for changing weather parameters for the Zimmerman method
Excellent! thank you! shall upgrade over the weekend.
Hi Ray,
Any chance the 2.1.4 Arduino firmware code can be made available? only 2.1.2 seems to be available (unless I am looking in the wrong location) :-
https://opensprinkler.freshdesk.com/support/solutions/articles/5000165132-how-to-compile-opensprinkler-firmware
“Download the OpenSprinkler Arduino library. Alternatively, you can also do a Git checkout from the OpenSprinkler Github repository.”Thanking you.
