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Water Meter or "How to get Home Assistant to send saved data to an Arduino"

OldSurferDude last edited by

This is a pretty basic project except that the trick was to get Home Assistant (HA) to store the cumulative water usage and then send it back after an Arduino (re)boot.

Here is a link to my documentation, such as it is.

And a link to the Arduino code. (the HA side is in the previous document)

see also How I delete a node from HA and start over
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@NotYetRated Hope you'll find good uses and a fun time while building your sensors.
Alexa Fauxmo - Mysensor Bridge Gateway / BLE - Mysensors Bridge Gateway
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@Kokosnoot good solution. I remember the discussion in the early days of MySensors. I've powered the radio's for most of my sensors from the 3.3v regulator on the arduino board and for me that works perfect. But for my latest designs I decided to add a separate ams regulator for my radio's like the guys suggested in the beginning. Because you basically want the on board regulator to power the mcu only.
HVAC Controller
My Project • • Michael Link

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We are of like minds, Don't like the cloud based controls (that's another discussion). In my case I have a Bryant/Connex system, heat pump, variable speed fan and 4 zones. There's a lot going on: the 4 zones creates 16 profiles. The fan speed for a profile will depend on the indoor and outdoor temperature. The thermal fluid pump also has to be controlled. A profile will have an optimal air pressure, so there's a sensor there. The controller works just fine not being connected to the cloud. But I want to set the parameters remotely, Bryant/Connex can do this. I also wnat the status of the various actuators and sensors to show up in Home Assistant. The signals sent over the RS422 are proprietary. My plan was to reverse-engineer the signals. After doing this I'll have to experiment to get the right mix of air pressue, fan speed and thermal fluid flow for each profile. I'd like to do the same for my AO Smith heat pump water heater. I'd like to follow your progress. OSD
A low cost energy meter
My Project • • OldSurferDude

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@OldSurferDude yes, you are correct. this sensor is capable of 50A continuous, which safely I would make it working at 40A max., but for such an important load as in your case I would go for a beefier one, like the ACS75x, 77x, but at this point I would also change the node's form factor for space and insulation reasons. On my application on the RV I have a max. curr. of 13A running on a AWG14-16 cable (European rules for RVs), so I did not ask myself too many questions beside, of course, safety. About the signal, it will be a sinusoidal signal swinging around Vcc/2. Vcc can be easily measured internally on the ATmega328. On all my DC sensors I measure Vcc at every loop, just before measuring the ADCs. Honestly, when the space is not an issue like in my RV, I would rather use a ring core current transformer, and I would get rid of noise, response time, power dissipation, but over all no need to cut any cable. Long story short, it has been a nice experiment and I used it for 6 months, and then I switched back to my RF-NANO based RS485-Modbus - Mysensors bridge connected to an off-the shelf power analyzer. Just for fun I attach a pic of my 12Vdc sensors installed on my RV. Forgive me for the spaghetti wiring on the right side, but this is an area that needs improvement.

Water Meter or "How to get Home Assistant to send saved data to an Arduino"

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Water Meter or "How to get Home Assistant to send saved data to an Arduino"

Suggested Topics

Welcome Announcements • • hek

Alexa Fauxmo - Mysensor Bridge Gateway / BLE - Mysensors Bridge Gateway My Project • • fsgraz

Auxiliary Loads and Mains Charger Controller for my Smart Mobile Home My Project • • fsgraz

Powering ESP8266 / NRF24L01 repeater through USB (improvement) My Project • • Kokosnoot

HVAC Controller My Project • • Michael Link

A low cost energy meter My Project • • OldSurferDude

62Online

11.4kUsers

11.1kTopics

112.7kPosts

Welcome
Announcements • • hek

Alexa Fauxmo - Mysensor Bridge Gateway / BLE - Mysensors Bridge Gateway
My Project • • fsgraz

Auxiliary Loads and Mains Charger Controller for my Smart Mobile Home
My Project • • fsgraz

Powering ESP8266 / NRF24L01 repeater through USB (improvement)
My Project • • Kokosnoot

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My Project • • Michael Link

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My Project • • OldSurferDude

62
Online

11.4k
Users

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Topics

112.7k
Posts