I have created a gateway transport for the SmartThings hub. It works for me but it's definitely a work in progress. There are two pieces to this:

• The MySensors gateway transport for SmartThings here.
• The SmartThings gateway device handler located here.

This is an Ethernet gateway transport that is designed to run on a Raspberry Pi 3 gateway. I have no plans right now to adapt to other platforms but feel free to contribute and add that support for other gateway devices.

SmartThings has an API that is called via an http POST method. Right now this is a one way transport and that's from MySensors to SmartThings. It doesn't handle an http request from SmartThings to the MySensors gateway. I have gotten http requests to work from SmartThings to an esp8266 and an arduino with a W5100 though, so I know it can be done. You have to host a webserver and I think it's not working on the pi because the ethernet.cpp/etherserver.cpp is custom for MySensors on linux.

You also have to install a SmartThings device handler for the MySensors gateway on SmartThings. The above repo contains the device handler and an example motion sensor device handler.

I learned a ton about the way that MySensors is working and also the way that SmartThings works. I'm happy to answer questions and share any of that knowledge as I'm able to.

@alexsh1 - Thanks for the suggestion. I'll be curious to hear what you think of the TPL5110.

Thanks for all the suggestions and replies. I'll take all the info, weigh the options and then report back on what I end up doing.

@alexsh1 Which sensor should I replace the water pressure sensor with?

https://www.amazon.com/dp/B00RCPDCQU/ref=twister_B00RCPDQOI?_encoding=UTF8&psc=1&tag=wwwmysensorso-20

Eyourlife Universal 200PSI Pressure Transducer Sender Solenoid for Oil Fuel Gas Air Water C3

$17.99

1 available

@maah This video doesn't show different ways to power an arduino it's talking about power consumption. I'm already removing the regulator, LED and sleeping it. I'm more asking about battery powered nodes with sensors than are more than 3.3v. How are people feeding 5v to these sensors?

@tochinet Do have diagrams, pictures and sketches you've posted?

@alexsh1 like I said of course it would be preferred to use the 3v sensors but that's not always possible. My question is more about what are people doing when they are using a battery powered node with a 5v sensor.

@zboblamont - interesting thought on the pump pressure switch. It's not a dedicated water supply. I'm in an irrigation district and the line is pressurized by their pump which is pumping from a canal. It does go down at times and then one of my neighbors or I have to call and alert them to come out and get it going. Yes you would think they would have some sort of alarm on their system but apparently they don't. I use the water for watering lawn, pasture, and just added the filtering so I could water my animals. I may end up with more than one flow meter so I can measure water consumption in each pen. These are show animals and water consumption is important as it relates to nutrition and weight gain.

@zboblamont - Below are links to what I have but am certainly open to other options.

https://www.amazon.com/dp/B00RCPDCQU/ref=twister_B00RCPDQOI?_encoding=UTF8&psc=1

https://www.ebay.com/itm/G3-4-Hall-Effect-Liquid-Water-Flow-Sensor-Switch-Flowmeter-Meter-2-45L-min/272370070138?epid=1784055044&hash=item3f6a85727a:g:TfsAAOSwOd9a8pQu

Eyourlife Universal 200PSI Pressure Transducer Sender Solenoid for Oil Fuel Gas Air Water C3

$17.99

1 available

G3/4" Hall Effect Liquid Water Flow Sensor Switch Flowmeter Meter 2-45L/min

$12.34

108 available