I just now uploaded version 604, which uses an LDO better suited to meet the current requirements of the BT832X, in case that is installed. I have shipped the files to the fab, so I'll post an update after I've received and tested the board.
I expect that upgrading to use the nRF52840, when it becomes available, will be a simple drop-in replacement upgrade.
@Nca78 Thanks you for you detailed answer.
The power source i am going to use is a CR2032.
Yes, for that case you need to short JPOWER and JBRD.
And don't forget to double check your USB adapter every time you connect it to your computer, to make sure you have selected 3.3V, else you will fry your radio with 5V.
I liked domoticz (was very easy to set up and use). Together with dzVents scripting wasn't that difficult either. But I also had some problem with it lately, so I was actually thinking about switching to openhab (2).
"So as soon as i've checked this is working as before, i release gerbers, and ask for a mini pcba if people interested."
Just in case it was not clear in the other thread, I am
If the quote you get for PCBA is reasonable of course, else I'll shift to the power hungry versions with bigger batteries until I feel confident to solder 0603. Or to re-make the design with sized-up components
The PIR sensor is pretty cheap, but I guess it's already too high for most breakout board sellers on aliexpress who want to keep the price ultra low. I'm just surprised companies like Adafruit or Sparkfun never did anything low power and just resell the 1$ SR501 at 10$
Only DFRobot claims to have a 15µA PIR which is already a great improvement but I can't get it shipped to Vietnam without shelling out 20$ for express mail
@LastSamurai As long as you can be sure the Vcc of the Arduino stays around 3.3v you can use a 3.3v zener. If you power as indicated (2 AA cells) voltage can drop below 2V and that cannot be considered safe. As an alternative to the zener you can have a resistor voltage divider (or stack a few normal diodes).