On a different topic, regarding the Ebyte modules, I'm noticing that they are much more likely to miss a packet if being run at 2.1v than if it's being run at, say, 3.3v. I've tried this now on two different modules, and the results are repeatable. It's a preliminary result, because so far I've only tested it with respect to the "listen mode."
Interesting subject. The PIR based project seem a good start, I don't think a CO2 sensor could give you any valuable information, I don't see what sleep related element you could measure with it ?
Motion sensor is not necessarily a better solution as you could move your legs and not your arms for example. But if you want to go this way program using a nrf51822 or nrf52832 and not arduino, so you can use a cheap fitness tracking watch using those sensors and available on ebay/aliexpress etc.
You can have a look at this solution using PIR, not all pages are available without paying for the full book, but the most important are including the methodology used and the arduino code on page 521
https://books.google.com.vn/books?id=aDysDAAAQBAJ&pg=PA514&lpg=PA514&dq=arduino+Hypnagogia+detection&source=bl&ots=sImWOf6rqf&sig=224GXZTxhpbckb8_DO1zYR_bpFE&hl=fr&sa=X&redir_esc=y#v=onepage&q=arduino Hypnagogia detection&f=false
@NeverDie said in nRF5 Bluetooth action!:
I had thought it would somehow automagically select the better antenna for receiving, but it looks like it wants me to make that selection myself. So, this may work better with longer preambles I suppose, to give enough time to measure the RSSI on each and then decide.
I suppose an easy solution would be to have a remote node send repeated packets, and I just program the RFAxis to toggle between its two antennas after allowing sufficient dwell time per antenna. That way it's more likely to receive at least one of the packets.
All in all, though, I think maybe having two separate radio receivers (since they're cheap anyway) for a gateway is probably better than having one radio receiver, with the burden on the firmware to select which antenna to receive on.
Any thoughts on this?
@Yveaux ok thank you I will have a look at what is available in the arduino ports.
Hello, did anyone happen to use this new chip in the end ?
Or did it arrive too late ?
@mfalkvidd said in nRF5 Bluetooth action!:
@NeverDie but how will you spend all the time you save by not having to create new boards all the time?
Yeah, not just that, but also not having to waste all that time waiting for each new board to come back from the fab. 
The problem is that the motion sensor still doesn't show up at the gateway although it gets an answer from it. I disabled domoticz though so I need to find another reason 
Earlier it showed up in domoticz ... strange. I will try to change the id and see if OH picks it up then.
Btw @TimO Any idea yet when you will be able to work on the github issues I posted?
I just noticed a very clever thing that Fanstel did: their nRF52 modules all have the same land pattern and pinout. That means you can upgrade from a regular nRF52832 to a power amplified version, or even an NRF52840 (when they become available), by just dropping the upgrade module into the same position on the PCB. i.e. you can run all the different modules from the same PCB design. Pretty cool. I like it.
@LastSamurai 
I'm glad you've found the problem, I was out of ideas. 
