OpenSprinkler Forums OpenSprinkler Unified Firmware Flow Sensor Working Reply To: Flow Sensor Working



Munnecke:  Our hose faucets/bibs are on the same main lines with the flow sensor, so for example if we are washing the car, the flow sensor registers flow rate.  I was thinking about having a timer such that after a predetermined amount of time, if the flow rate doesn’t go down then it would trigger and send a message.  I actually had a hose hit by something falling in the wind at night and it broke a hose connection and had some damage to my driveway and $200 in water bill increase from just one day.  Would have been nice to be notified within an hour for example (via text etc).  I’ll look at MQTT but I don’t know how easy it would be for the OS to communicate with MQTT.  As for your flow rate sensor, you should ask the company what wire to use.  I’m using a shielded wire where the shield is ground, and the inner is the signal and I don’t seem to get any glitches, although the length is only maybe 25 feet.  Did you connect it to the rain sensor input?  perhaps the pull-up is too strong, or a series term resistor may help.  Looks like there is a lot of noise on the cat5 cable.  I think cat5 is usually for differential signals and is UTP (probably unshielded twisted pair) and unless your receiver is subtracting the two wires I’d go with a shielded cable with shield grounded.

I have a similar scenario where i’d like my main controller to communicate via TCP/IP to the secondary controller… Since I have one flow sensor covering both OS’s.

Once the data is logged and a computer can access it, then we can run perl scripts etc and grab the data.  I have a script that shows all my zones and how much each one costs per zone based on actual water usage and flags which zone may have trouble (outside of set thresholds).