General Discussion

As long as you have sensors and you can read data, you can use that data to be used in rules in the controller. Domoticz for example has a rule creator that also uses blockly that is very useful when you are not much into programming. If you need to check moisture levels (analog sensor) and water present (as a digital input), you could check 6-8 plants with a simple arduino or 16 using a Mega 2560.

Hi @mfalkvidd and others. Yesterday after work I tried to get my head around code suggestions but somehow I cold not make them work so I did some google search and after some time I find something that I implemented in my nodes for testing. Interestingly it works as expected for two of my nodes, but one still keeps jumping around, not that often, but that's still strange, I will compare code to other two to see what I've done wrong there. So I used Hysteresis approach by doing this. #define HYSTERISIS 0.5 // Hysteresis for sensor ... float temperature = dht.getTemperature(); if (isnan(temperature)) { Serial.println("Failed reading temperature from DHT!"); } else if (abs(temperature - lastTemp ) > HYSTERISIS) { // Only send temperature if it changed since the last measurement or if we didn't send an update for n times lastTemp = temperature; if (!metric) { temperature = dht.toFahrenheit(temperature); } And the same for humidity. Still not sure that this will work as expected in long run, but will see. But now it is way better than before. Thanks.

@Yveaux do you also use Grafana in order to visualize the data? I am not sure what fields/attributes are necessary despite "time" and "value" for a binary sensor.

@mfalkvidd i thought is was ok because I defined 4 binary buttons 2, 8, A0 and A1 and they only work like a button. Beside these Buttons there is a class in use for the 3x relais with extra buttons to control the relais or do I make a mistake?

As I mentioned in my previous post a few days ago, you will want a battery tender, and not just a charger. A battery tender will shut off if the battery is fully charged, whereas just using a battery charger could overcharge the battery.

@BartE What an extended answere. Here I can do something with. Good learning stuff.

an update, from eBay $8 INA3221 3 Channel Shunt Current Voltage Monitor Sensor

Thanks for the extensive reply, I'll come back with feedback once I got to test everything. Quick response wrt the battery: I already tested the better 3,7V Lithium battery on the new MySensors setup as well and it runs for a bit more than a week. The one in the picture (old setup) has been running for about half a year (since January). When using the 3x LR44 on the old setup it runs for months, with MySensors it runs a bit over a day.

@mfalkvidd you are right, i try to make one relay working.

Thanks guys for the responses. I think I may need to stick with nothing real time, but somehow record the images, then drive up to the pole and trigger a download from the SD card via RF. Just too many damning restrictions.

I need this information for my -Removed by moderator- , so how i can do that?

Sonoff switches are just esp8266 that you can reflash with your code

At least it was getting id 75 😀

@mfalkvidd Thank you! It works. I was searching for "A0" not the GPIO number (newbie here) Thank you once again.

Has anyone thought of using serial over ethernet? I would think that you could do that similar to having a straight serial connection. I do believe that ESPEasy supports serial over ethernet. I can check when I get home since that is what I am running on all of my Sonoffs. I am using a custom plugin on my Vera to run them, but I do have a couple spare Sonoffs that I could try a serial connection with. The only thing would be what GPIO pins are available on a Sonoff or other ESP8266 device to act as the serial side of the gateway.

Higher security if you have incoming connections from outside your Lan and more flexibility if you have other devices accessing data directly on mqtt, but if you are running just your simple setup there is no real need

@dbemowsk looks promising. A good (re)start.

Welcome to the MySensors community @Alpachigo ! I haven't seen a low power solution for valves, but a discussion on the same topic is available at https://forum.mysensors.org/topic/6598/battery-powered-irrigation-controller/ For generic recommendations on battery-powered nodes see https://www.mysensors.org/build/battery if you haven't already.