Which is better: RFM69 or NRF24L01+?


  • Hero Member

    I notice that today's MySensors release v1.5 contains support for RFM69. So, which is better: RFM69 or NRF24L01+?


  • Hero Member

    I'm going to to out on a limb here and say RFM69. The range and wall penetration is in another league altogether from what I've seen, given similar input current. And if I remember correctly you can force much lower bit rates than NRF24? Also, afaik, no knockoff issues. The issue for me is that I now have a ton of NRF24s and I'm reluctant to switch plus the RFM69s are hard to come by outside of the US, where the manufacturer has an official outlet. I've seen them occasionally on AliExpress but they have never seemed to catch on.

    Would be great if we could get ITEAD to carry them perhaps?
    @jerry



  • Hi I am using both at this stage and is busy change all my nodes over to the RFM69 and I don't have issue with range like I do with the NRS24L01+. I order my radio from Anadruino (http://www.anarduino.com/) to date I did not had any problems with the deliveries I get it relative fast. Also, it is easy to fit the radio on an Arduino mini pro see picture 1. Your footprint with the RFM69 is must smaller than it is if you fit the Arduino and NRF24l01 like I did with this LED dimmer and PIR Sensor see picture 2. The only problem I have at this stage is my power consumption is still high and I don't know why it is this high 3mA.

    Picture 1:
    upload-098ae33c-2c84-4cf2-8361-11ef71e094dc

    Picture 2:
    upload-93f251ef-24d1-4735-9f27-2336934df5ed


  • Hero Member

    Sorry for so basic question --- But I think you needed to adapt the gateway, in order to run both radios together (mix of RFM69 and nRF24L01+ nodes) ?



  • @rvendrame yes I running 2 serial gateways on my Domoticz controller.


  • Admin

    @rvendrame

    the new GW device that I work on, has sockets / pads for both radio versions (rfm69 and nrf24). And in theory it should have enough power to control both radio networks at the same time.


  • Hardware Contributor

    I agree with you too. RFM is very good quality and @tbowmo GW will be sooo great! atsam is little beast and our GW will be much much powerful! Like some people I prefer not using wifi for GW (security question for me), usb is much more secure I think. And for radio, RFM is a killer!


  • Hero Member

    @tbowmo , in that case we need to adopt the gw sketch to run both radios in parallel right?

    And @Francois , by running two distinct GWs, I guess you don't have to worry about duplicate node IDs, right?

    Thank you guys!



  • @rvendrame I give all my nodes static ID's and this is working for me in Domoticz


  • Hero Member

    If you were starting from scratch, would you still put both radio types in your system, or would you put all of one type only?



  • @rvendrame I will only go for the RFM69. When I start playing with the Mysensor project Hek only had only support for the NRF24l01+. Once they port the library over to support the RFM69 I stop using the NRF24L01+. Luckly I don't have big installation on the NRF24 radio.


  • Admin

    @rvendrame

    Yes, there will be some adjustments to code here and there.. But first the prototypes needs to be build, before we can make code for it.. (Also, I don't have any rfm69 hardware at the moment..)


  • Hero Member

    @Francois darn, by now i can wire the nrf from memory. Now to learn new wiring....
    The power consumption in idle is still something to consider


  • Hero Member

    @Moshe-Livne said:

    The power consumption in idle is still something to consider

    According to JeeLabs, " The RFM69 draws 0.1 µA in sleep mode." Say, isn't that lower than for the NRF24L01+?

    Or, by "idle," were you referring to something else?


  • Hero Member

    @NeverDie I mean in reality... people here measured 30uA compared to 3uA in similar nrf setup. could be the result of many things, might be just a kink that has to be ironed in the software.


  • Hero Member

    I haven't measured it myself, so I'm very open to everybody's data. Hopefully more people will post results of their own measurements and a pattern will emerge suggesting what's truth.



  • Just curious if anyone has tested the power consumption yet? But to be honest only one of my sensors is battery powered so I'm not overly concerned :-)



  • @francois where did you get your antenna for rfm69. DIY ?



  • Hi,

    Anyone got the Ethernet gateway going with RFM69? I am struggling and I am not sure, but I think there are a few issues in the V1.5 for RFM69.

    @NeverDie, a 78mm piece of wire works well for antenna.
    *Edit - Sorry, this is assuming 915MHz. See https://www.easycalculation.com/physics/electromagnetism/antenna-wavelength.php and choose quater wavelength


  • Hero Member

    @mrmin24 said:

    Hi,

    Anyone got the Ethernet gateway going with RFM69? I am struggling and I am not sure, but I think there are a few issues in the V1.5 for RFM69.

    @NeverDie, a 78mm piece of wire works well for antenna.

    Does it make any difference what the wire diameter is? I'm assuming the thicker the better?


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