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  3. Can't program arduino with NRF connected

Can't program arduino with NRF connected

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  • T Offline
    T Offline
    tbowmo
    Admin
    wrote on last edited by tbowmo
    #2

    @Sweebee

    Are you using ISP or UART to upload the new sketch?

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    • SweebeeS Offline
      SweebeeS Offline
      Sweebee
      wrote on last edited by
      #3

      Just a normal FTDI basic.

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      • T Offline
        T Offline
        tbowmo
        Admin
        wrote on last edited by
        #4

        Have you checked VCC on both radio and arduino?

        Could you try and power down the radio in between transmits? (gw.sleep() method) and check power consumption when it's not transmitting?

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        • SweebeeS Offline
          SweebeeS Offline
          Sweebee
          wrote on last edited by Sweebee
          #5

          In sleep its using 1,68mA. powerLED is still on the arduino.

          Tried to give it some external power. So I connected 12V to the raw input. But now the NRF is dead. :S really don't know whats going wrong.

          There is coming 10V out of the Vcc when i connected 12V to the RAW.

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          • R Offline
            R Offline
            rvendrame
            Hero Member
            wrote on last edited by
            #6

            I had bad experiences with Pro mini clones --- 12V is the absolute maximum that their on-board regulator support, and even not crossing the 12V frontier, they get very hot when near by it.

            I fried some arduinos / radios before learning it properly ;-) The first sympthon is the high voltage (also high current) on VCC (sometimes only the radio fry, as the arduino chip is a bit less sensible ).

            So if you are not using real/good arduinos, avoid to power via 12V. I use cheap mobile phone (USB) charges providing 5V to arduino, and a 3V3 stepdown in Radio.

            Home Assistant / Vera Plus UI7
            ESP8266 GW + mySensors 2.3.2
            Alexa / Google Home

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            • SweebeeS Offline
              SweebeeS Offline
              Sweebee
              wrote on last edited by
              #7

              normally i don't use the raw input. Or if i do i use 5V. But i'm making a 12V led strip dimmer.

              Threw the arduino and nrf away and took new ones and they are working fine :)

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              • R Offline
                R Offline
                rvendrame
                Hero Member
                wrote on last edited by
                #8

                Yes, I was referring to 12V on raw. At least to me it was enough to fry some arduinos / radios...

                Home Assistant / Vera Plus UI7
                ESP8266 GW + mySensors 2.3.2
                Alexa / Google Home

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                • R rvendrame

                  Yes, I was referring to 12V on raw. At least to me it was enough to fry some arduinos / radios...

                  SweebeeS Offline
                  SweebeeS Offline
                  Sweebee
                  wrote on last edited by Sweebee
                  #9

                  @rvendrame well, for the price i could burn one once in a while :P

                  But i guess there must be something wrong even before i put 12v on the raw input. I made like 10 sensors now and never had this before that i couldn't upload a sketch with the nrf connected.

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                  • R Offline
                    R Offline
                    rvendrame
                    Hero Member
                    wrote on last edited by
                    #10

                    Right, probably that arduino was already damaged even before the 12V... But I would keep an eye on that 12V --- As I really didn't a good experience with that.

                    Home Assistant / Vera Plus UI7
                    ESP8266 GW + mySensors 2.3.2
                    Alexa / Google Home

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                    • SweebeeS Offline
                      SweebeeS Offline
                      Sweebee
                      wrote on last edited by Sweebee
                      #11

                      today i burned a second regulator on a 5V pro mini. I use a car 5V adapter now, but its quite large :P. Any1 experience with good 5V regulators that can handle 12V?

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