Wireless flow meter purchase

post by JP540 on Feb 26, 2021

I cannot find a place on the Rachio web site to purchase a Rachio Wireless Flow Meter. Is one still available?

post by Thomas_Lerman on Feb 26, 2021

My understanding is that they are not available through Rachio any longer, but other places may still have them. Here is another post that talks about it (I believe more exist):

post by iotaprime on Jun 2, 2023

I’m currently running one flow meter with a two controller system. Purchased a second flow meter for an excessive amount of money (ebay). After plumbing it in, we discovered the APP will not see it. Apparently everything Rachio has said about not supporting it is true. I feel bad about this $300 mistake. I do DIY with Arduino. I suppose if I could read the thing outside of the Rachio app, it would take away some of the pain.

post by Thomas_Lerman on Jun 2, 2023

Ouch, sorry

post by championc on Jun 17, 2023

I bought flow sensors from AliExpress. They have three wire connections, which I simply connected to the gpio pins of an old Raspberry Pi running Node-Red. It was used to count the pulses, and convert the pulses into Litres / Gallons per minute. I am more using it to ensure that we only have watering when expected, ultimately it’s a warning system for a burst pipe. Knowing the flow rate meant I could accurately set the nozzle inches per hour, which meant too that the Rachio could reasonably accurately calculate the water consumption

Use this formula

Nozzle in/hr = (Gallons / mins running / Area in sq. Ft) x 60

Nozzle cm/hr = ((Litres / mins running / Area in m2) X 60)/10

This is the flow sensor I bought and use Flow sensor link

post by chris on Jun 17, 2023

I might be able to help (can’t promise it!). Will you DM me the serial number of the controller you’re trying to pair the WFM to?

post by iotaprime on Jun 19, 2023

Yes, I’ll do that today. Sorry I didn’t see your post earlier.

post by iotaprime on Jun 21, 2023

Serial Number VR0704265 Thanks for reaching out.