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  1. Home
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  3. Uno stops sending

Uno stops sending

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  • Jim DanforthJ Offline
    Jim DanforthJ Offline
    Jim Danforth
    wrote on last edited by
    #1

    Running a genuine uno with nrf radio and dht22 sensors. Runs about 12 or so hours then drops sending. Hitting reset button makes it reconnect and instantly update. Any ideas?

    mfalkviddM 1 Reply Last reply
    0
    • Jim DanforthJ Jim Danforth

      Running a genuine uno with nrf radio and dht22 sensors. Runs about 12 or so hours then drops sending. Hitting reset button makes it reconnect and instantly update. Any ideas?

      mfalkviddM Offline
      mfalkviddM Offline
      mfalkvidd
      Mod
      wrote on last edited by
      #2

      @Jim-Danforth power supply problem is the most common cause. How is the Uno powered? How is the nrf powered? Powering the nrf from the 3.3V Uno output has been problematic for some users, a separate power supply may be required. Are you using a capacitor close to the nrf?

      A troubleshooting diagram is available here https://forum.mysensors.org/topic/666/debug-faq-and-how-ask-for-help

      B 1 Reply Last reply
      1
      • mfalkviddM mfalkvidd

        @Jim-Danforth power supply problem is the most common cause. How is the Uno powered? How is the nrf powered? Powering the nrf from the 3.3V Uno output has been problematic for some users, a separate power supply may be required. Are you using a capacitor close to the nrf?

        A troubleshooting diagram is available here https://forum.mysensors.org/topic/666/debug-faq-and-how-ask-for-help

        B Offline
        B Offline
        boozz
        wrote on last edited by
        #3

        @mfalkvidd

        I agree that powering the nrf via the uno's onboard 3.3V can be problematic. Unfortunately I experience the same issues with my pro-mini's and here the nrf's are powered via an external 3.3V LDO voltage regulator (MCP1700, TO-92). Now and then a sensor or repeater simply stops.
        Cut and paste from Jim Danforth: :smiley: Hitting reset button makes it reconnect and instantly update.

        I've never tested my nrf's (china, ebay) but I guess this could be the source of the problems we're experiencing.

        I think it's worth trying the quality meter as discussed in this tread

        BR,

        Boozz

        Jim DanforthJ 1 Reply Last reply
        1
        • B boozz

          @mfalkvidd

          I agree that powering the nrf via the uno's onboard 3.3V can be problematic. Unfortunately I experience the same issues with my pro-mini's and here the nrf's are powered via an external 3.3V LDO voltage regulator (MCP1700, TO-92). Now and then a sensor or repeater simply stops.
          Cut and paste from Jim Danforth: :smiley: Hitting reset button makes it reconnect and instantly update.

          I've never tested my nrf's (china, ebay) but I guess this could be the source of the problems we're experiencing.

          I think it's worth trying the quality meter as discussed in this tread

          BR,

          Boozz

          Jim DanforthJ Offline
          Jim DanforthJ Offline
          Jim Danforth
          wrote on last edited by
          #4

          @boozz I moved the unit closer and it stayed up a few days just fine. Had to reset the gateway, and it did not come back until I reset the sensor unit. So apparently, once it fails to call home, its goes quiet.

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          • Jim DanforthJ Offline
            Jim DanforthJ Offline
            Jim Danforth
            wrote on last edited by
            #5

            Still hoping for a solution. Does the sensors not try to find home again if it loses it until a reset?

            1 Reply Last reply
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            • Jim DanforthJ Offline
              Jim DanforthJ Offline
              Jim Danforth
              wrote on last edited by
              #6

              Still no solution. I set the 2 units side-by-side. Works for 4 hours, then just disappears.

              1 Reply Last reply
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              • G Offline
                G Offline
                gloob
                wrote on last edited by
                #7

                I remember that there is a parameter for the MySensors library that stops sending after I think 3 false sendings.

                I think you can disable this "feature" but currently I have no idea how to do this.

                1 Reply Last reply
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                • Jim DanforthJ Offline
                  Jim DanforthJ Offline
                  Jim Danforth
                  wrote on last edited by
                  #8

                  That sounds like a legitimate thought. If anyone knows where that parameter is, and how to disable, that would be excellent. I wonder if Longer sleep times, would be more apt to skip a temporary issue, rather than a rapidfire re-attempt, triggering that 3 miss limit.

                  1 Reply Last reply
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                  • A Offline
                    A Offline
                    abrasha
                    wrote on last edited by
                    #9

                    well i have the same issues with my network.
                    my last operation was to replace the repeaters with big 9dbi antenna and nano io shield which give the nrf direct power from the 12v socket (through 3.3 reg' of course).

                    and still losing contact from time to time.

                    **next phases **

                    • 1 wrapping the tinfoil shield discussed here
                    • 2 adding relay to software reset the arduino (gnd and rst connected to relay - like arduino pressing its own reset button)
                      * 3 replacing nrf with rfm69-433mhz - some say theyre better although require some soldering wires and logic converters (i'm waiting for my order from ebay to arrive.)

                    about this library fail attempts modification - i didnt find something, but maybe MySensor.h has something in it - but i need some proffesional eyes here,

                    BTW my setup is domoticz on Rpi, S-GW, E-GW, most nodes with nano-io-shiedl + nrf-pa-lna, library v1.5

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