Working gateway ?



  • I buy 5 sensebender cards and NRF24L01+ modules (from electrodragon) and 1 NRF24 amplfied
    With my UNO and amplified or not version it doesn't work well (lot of st:fail).
    I had capacitor (10uF) on each NRF Board, try external 3.3V but it always working bad.
    So I try with Pro micro (5V 16Mhz Version) but It doesn't work. Controller try a "Get version" but no answer from ProMicro. I change CE an CS pin to 2/3 on ProMicro (I read on some forums it doesn't work with 9/10) and change init code but doesnt work too ... Any advice ?


  • Hero Member

    @Fabien, regarding the 'st:fail' . How are you powering UNO and Radio? Some very cheap phone chargers may introduce a lot of noise on power that even a big capacitor can not handle...



  • So i try with 2 AA battery for powering radio on gateway. Same about 50% of st:fail. Powering arduino from 2A power supply. At oscilliscope, using spectrum analyzer nothing to report on 3.3V and 5V. Pehaps dupont cable ?


  • Hero Member

    How far are the node from the gateway? Any wall or obstacle in between?



  • about 2 meters with no obstacle :(


  • Hero Member

    Do you have different radios to try with?



  • yes with 5 radios and 1 amplified version !


  • Admin

    are those 5 radios from the same batch?

    have you seen this forum thread

    Might be cheap NRF24 clones you've got..



  • Ok so where can I buy good nrf ?
    Actually all my componment and modules comes from electrodragon without any problem.



  • Ok I try now with only few centimeters and PA_LOW on gateway and it doesn't work well....



  • Now I just try with another sensebender with radio directly solder on board and it work fine with no st:fail. radio was previously tested on the first board with lot of st:fail. I will chek the first board, perhaps bad solder or problem with adaptater.


  • Admin

    I bought the latest batch of NRF modules from itead, together with my sensebender pcb's. It should be genuine NRF chips they use.



  • ok for my next xenebender batch I will buy NRF together. And now I confirm the problem with bad contact (with my finger it works fine !!!. I will directly solder NRF to sensebernder tomorrow. Strange, my solders seems to be fine and I made it all one mmore time but same problem.
    I will let the new sensbender online all the night. I will check tomorow my grafana input !


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