💬 Battery Powered Sensors

[skywatch]

@Gilles-BILLARD Inoticed the following in the sketch you posted above...

  // ************Sleeping test ***************
    #ifdef MY_DEBUG 
        delay(10000); // 10 secondes
    #else
        sleep(10000);
    #endif    
}

Delay should be replaced by Wait in mysensors code to avoid blocking.

I always went by the old saying that when you are in a hole, stop digging. I have not seen the behaviour you show before. I can only suggest that you run the EEPROMclear sketch (file>examples>mysensors>cleareepromconfig) and try again. Check the voltage to the promini is stable and the radio has the recommended capacitor. You might be surprised at the difference a good clean power supply can make.

#is the gateway running on the same power supply? IS GW receiving messages? Please provide the FULL debug output on the serial monitor. That snippet doesn't help much.

[Yveaux]

@Gilles-BILLARD I would like to think along to help, but lost you many posts back...
All was ok, so what did you change (and why) and what is the real issue right now?
And as @skywatch indicates, post the full log, sketch and everything. Don't try to filter information yourself, you might miss something.

[Gilles BILLARD]

Finally, I found it….
A big thank you to all those who helped;
Here's my report in case it could be usefull to others (so, they will not waste as much time as I did)
All began with my FTDI refusing to work with the MiniCore library, returning this classic error code: "avrdude: error: could not find USB device with vid-0x16c0 pid-0x5dc vendor'www.fischl.de' product'USBasp' when I wanted to reprogram a ProMini.
So I opted for programming via another ProMini (Arduino as ISP)
The first ProMini was able to receive the MiniCore bootloader and then my sketch without any problem, but the followings did’nt....No error message was reported; I spent 9 days trying hundreds of times changing only one thing at a time... unsuccessfully.
But this morning I tried again using version 2.0.0 of Arduino’s IDE, and here I received an error message; "Impossible to recognize the Arduino as ISP" !!!!
Eureka.... I had the idea to inject the MiniCore BootLoader + the “Arduino ISP” sketch in the 2nd via the IDE Arduino 1.8.13 and then use this very 2nd one to program others; At that moment, everything became normal; The tests were ok and went to "sleep" so I loaded my sketch and everything is good now.
So: If you try to use Arduino as ISP with MiniCore Both Arduinos sould have been burnt with MiniCore BootLoader
Thank you again.

PS: Could the admin delete all my useless posts ?

[Gilles BILLARD]

@Yveaux said in 💬 Battery Powered Sensors:

.... All was ok, so what did you change (and why)

A the very beginning, hesitating with the procedure, I've probably burnt the Minicore bootloader in the programming ProMini without noticing it... That's the only explanation I see.

[skywatch]

Just completed 1 year of operation of a PIR sensor in the house that trigger 100-200 times a day. It is powered by 2xAA batteries and here is a graph of battery level over the year.

[nekitoss]

@skywatch If your project is free and open, where i can look at it? At the moment i need to solve same problem. On your graph what will be 0% ? For mine devices it is minimum 1.9v, for few it is 2.2v

[skywatch]

@nekitoss
I used 3.3V pro mini with regulator removed and powered by Vin pin. Also removed leds from the pro mini.

I used minicore bootloader.

I used the small pir sensors and again removed the regulator to power directly from the pro mini outputs.

After that sleep the node and trigger on interrupt.

Send battery level once a day.

Use inbuilt battery level monitor and not external components that constantly drain power to get battery level.

1.8V is 0% on the graph (not visible yet!) but I have had nodes working below 1.7V It's a matter of luck with that it seems.

Hope this helps you on the right track. I'll try and help if you want.

This is the latest image and still going strong after 18 months. Voltage is at 2.903V

Here is photo of the test example - I need to make a case and produce more of them over winter.....

Here is the same build/code of a window sensor. Similar time frame but hardly triggered.....