Mod

That is why a capacitor is usually necessary as the current used by the chip spikes during transmission and voltage regulators usually can not keep up

You need to make a check in the code that if the sensor read is fails it should keep going

It could very well be, but I noticed that also Domoticz forum is not "busy". I noticed a general lack of high-end topics more than other things.

For this kind of project, HW plays a small role as most of the work is done in the SW to actually analyse data and give you the results. I have a Mi Band 2 but I can tell you that is not comparable with the Jawbone UP24 I had before (besides that the Mi Band it is still working and the Jawbone's battery died after 10 months and I couldn't get it replaced under warranty as they claimed the device suffered a shock, I am glad they have gone bankrupt even though the SW was really great).

@Nca78 I did test it for Atmega328p compatibility which looked just fine.
Not sure what the current state is regarding support for the extra peripherals though.

@Samuel235 I am looking at a CO sensor too, do you have any updates on the ones you are using? What is the exact model?

Yes, I'm using latest version in dev branch. I also figured I can show both power level and power percentage ( I removed the "VCC" from lcd as it is not really necessary )

Nrf24 use channels (frequencies), by default mysensors uses 76 if you don't specify anything, so channel is set and you should be covered.
Btw, at least a couple of Uno or nano are a must to have them available if you want to do Arduino programming

@Anduril MySensors supports regular strings of ASCII characters. These characters are IIRR in the high area of ASCII which might not be supported by a regular text display.
Another problem could be that you're supplying the text as Unicode wide characters (2 bytes per character, eg. when typing in Ms Word) which is not supported by MySensors.

personally I am very happy with these
The other clones I got at least there were working but with short range. Did you try to use a normal Arduino UNO as gateway? Just to see if anything changes