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With enough coding almost anything is possible. But wouldn't it be easier to build a serial gateway?

@zboblamont my experience is that people quickly learn to ignore the pinned posts. We've had a pinned post in the Troubleshooting section for years, and most people don't read it before posting in that category. This might just be me being grumpy though.

We've seen reports of continuous reboots, and the radio getting stick in "always on", blocking all other traffic, when nodes run outside of specs. So it is probably a good idea to stay above the ~2.4V limit when running at 8MHz. I such a limit myself in my plant monitoring node sketch.

I realized we didn't have any info on battery self-discharge on the battery page, so I added a new section. Feedback is welcome.

@skywatch great to hear you resolved your issues!

@skywatch Maybe the cause lies outside your sketch; Are you using MySensors 2.3.2? Or do try with Arduino 1.8.10

@kiesel said in Battery: pro mini @ 1mhz vs booster:

My question is: will it linearly decrease the emptier the Rechargeables become or should I use a different calculation?

No, it won't. The voltage decrease in a battery discarge curve is far from linear. You are measuring voltage, so percentage calculation is also not linear.
You need a coulomb counter to accurately know how much juice is left in the battery.

@kiesel I think that article is referring to the maximum clock frequency at low supply voltage.
I looked it up in the ATMega328P datasheet at microchip's site (http://ww1.microchip.com/downloads/en/DeviceDoc/ATmega48A-PA-88A-PA-168A-PA-328-P-DS-DS40002061A.pdf).

So you will be using the ATMega out of spec when running at 8MHz around the BOD Level of 1.8V

I estimate the minimum supply level must be around 2.4V for 8MHz, which makes me realize I'm running most of my sensors outside spec

@kiesel my guess is that linear is a good enough approximation. But if you want to get into details, there are probably whitepapers discussing the particular battery chemistry used by the batteries you have chosen. Or just try to find battery discharge curves for that type of battery.

@skywatch said in VS838 IR receiver led anyone got it working with mys?:

@Yveaux I cannot thank you enough for doing this to try and help me out. It is really kind of you.

Glad I could help!

I am using 1.8.9 IDE as I had issues with 1.8.10 (as did others).

I didn't encounter any issues with 1.8.10 so far, but I don't expect it will make a difference in your case

Also I notice that you have forced 57600 as the baud rate in the sketch. Is this the magic bullet I wonder as I left mine at the default 115200 setting. I can't imagine why it would make a difference though.

57600 is the default baud rate at 3v3 for pro mini iirr. This might be related to when using the internal oscillator and the frequency errors introduced by it. But pro mini uses an external crystal so I have to dig the datasheets to know for sure. Maybe some other forum member knows it by heart...

I owe you a beer for sure!

Great! That I will remember

@kiesel said in Battery: pro mini @ 1mhz vs booster:

There it's says that at 8mhz it can be unstable. Is that not correct?

Do you have a reference to this statement?
In not aware of any instability at 8mhz.