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  1. Home
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  3. How to check my soldering using a multimeter

How to check my soldering using a multimeter

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  • scalzS Offline
    scalzS Offline
    scalz
    Hardware Contributor
    wrote on last edited by scalz
    #5

    Hi.

    If you want to check your voltage levels, continuity etc, learn how to use your multimeter :
    https://learn.sparkfun.com/tutorials/how-to-use-a-multimeter/all

    VCC between your ftdi and your board can be removed if you power from battery depending on your circuit (follow @sundberg84 advice for this), but the GND connection is in all case mandatory or it won't work, get garbage etc.. ;)

    1 Reply Last reply
    2
    • Maurice KrijtenbergM Offline
      Maurice KrijtenbergM Offline
      Maurice Krijtenberg
      wrote on last edited by
      #6

      Again: thanks for the fast replies. Don't guys to work or something? :P

      1. Connecting the GND to the FTDI made my monitor work again
      2. Using the multimeter I see the radio gets 3.3 V, so I guess the problem is somewhere in the data pins.
      3. @scalz Thanks for the link! I was looking for something like that. I'm gonna read it and I'll return with some questions, or answers ;)
      sundberg84S 1 Reply Last reply
      1
      • Maurice KrijtenbergM Maurice Krijtenberg

        Again: thanks for the fast replies. Don't guys to work or something? :P

        1. Connecting the GND to the FTDI made my monitor work again
        2. Using the multimeter I see the radio gets 3.3 V, so I guess the problem is somewhere in the data pins.
        3. @scalz Thanks for the link! I was looking for something like that. I'm gonna read it and I'll return with some questions, or answers ;)
        sundberg84S Offline
        sundberg84S Offline
        sundberg84
        Hardware Contributor
        wrote on last edited by
        #7

        @Maurice-Krijtenberg - With that info - your conclusion is most likely true. If you are getting a good voltage but Radio Init fail - recheck every data cable connection and solderpoint.

        Controller: Proxmox VM - Home Assistant
        MySensors GW: Arduino Uno - W5100 Ethernet, Gw Shield Nrf24l01+ 2,4Ghz
        MySensors GW: Arduino Uno - Gw Shield RFM69, 433mhz
        RFLink GW - Arduino Mega + RFLink Shield, 433mhz

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        0
        • Maurice KrijtenbergM Offline
          Maurice KrijtenbergM Offline
          Maurice Krijtenberg
          wrote on last edited by
          #8

          Finally!! I got it to work :)

          Using "Continuity mode" on my multimeter, I found out that two connections didn't work. I probably damaged my board during soldering. Using two wires I was able to get it working

          alt text

          One step closer! Thanks again @sundberg84 and @scalz

          sundberg84S 1 Reply Last reply
          2
          • Maurice KrijtenbergM Maurice Krijtenberg

            Finally!! I got it to work :)

            Using "Continuity mode" on my multimeter, I found out that two connections didn't work. I probably damaged my board during soldering. Using two wires I was able to get it working

            alt text

            One step closer! Thanks again @sundberg84 and @scalz

            sundberg84S Offline
            sundberg84S Offline
            sundberg84
            Hardware Contributor
            wrote on last edited by
            #9

            @Maurice-Krijtenberg - nice to see! Great work.
            This is why its so dangerous... you get that rush when you fix something and you need more and more... its like a drug :)
            Thanks for reporting back!

            Controller: Proxmox VM - Home Assistant
            MySensors GW: Arduino Uno - W5100 Ethernet, Gw Shield Nrf24l01+ 2,4Ghz
            MySensors GW: Arduino Uno - Gw Shield RFM69, 433mhz
            RFLink GW - Arduino Mega + RFLink Shield, 433mhz

            1 Reply Last reply
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            • Nca78N Offline
              Nca78N Offline
              Nca78
              Hardware Contributor
              wrote on last edited by
              #10

              Hello, now you have read how to use your multimeter, may I suggest you check more tutorials from Spzrkfun website ? I think they have one about basics of soldering that you should watch ;)
              Looking at the "balls" of solder on the pins of your Arduino you skipped that step which is crucial to have good working circuits.
              And don't forget to always keep your soldering tip shiny !

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              0
              • Maurice KrijtenbergM Offline
                Maurice KrijtenbergM Offline
                Maurice Krijtenberg
                wrote on last edited by Maurice Krijtenberg
                #11

                Hey @Nca78
                Thanks for the suggestion... I just watched this video from sparkfun: https://www.youtube.com/watch?v=f95i88OSWB4
                Wow.... I was doing it soooo wrong haha. I'm gonna practice a bit to get my "balls" look more like "volcanos" (yes, still talking about electronics :P )

                tbowmoT 1 Reply Last reply
                2
                • Maurice KrijtenbergM Maurice Krijtenberg

                  Hey @Nca78
                  Thanks for the suggestion... I just watched this video from sparkfun: https://www.youtube.com/watch?v=f95i88OSWB4
                  Wow.... I was doing it soooo wrong haha. I'm gonna practice a bit to get my "balls" look more like "volcanos" (yes, still talking about electronics :P )

                  tbowmoT Offline
                  tbowmoT Offline
                  tbowmo
                  Admin
                  wrote on last edited by
                  #12

                  @Maurice-Krijtenberg

                  First time I've seen a person using safety goggles when soldering, and I've been in the industry since early 90's.. Working in a handful different factories.

                  YveauxY 1 Reply Last reply
                  1
                  • tbowmoT tbowmo

                    @Maurice-Krijtenberg

                    First time I've seen a person using safety goggles when soldering, and I've been in the industry since early 90's.. Working in a handful different factories.

                    YveauxY Offline
                    YveauxY Offline
                    Yveaux
                    Mod
                    wrote on last edited by
                    #13

                    @tbowmo You don't want a hot soldering iron to bounce back into your remaining eye! :confounded:

                    http://yveaux.blogspot.nl

                    1 Reply Last reply
                    0
                    • Maurice KrijtenbergM Offline
                      Maurice KrijtenbergM Offline
                      Maurice Krijtenberg
                      wrote on last edited by
                      #14

                      haha :joy: well, to be extra careful, I wear gloves during soldering.

                      1 Reply Last reply
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                      • tbowmoT Offline
                        tbowmoT Offline
                        tbowmo
                        Admin
                        wrote on last edited by
                        #15

                        Another thing I noticed in that video..

                        "Some has a heating element in the handle, this one has it separate" So the heating element is in the blue box?? And heat is transmitted through the wire to the handle? Won't you burn your pretty hands, if the heating element was in that blue box, Wonder how hot that cable would be, to heat the soldering iron part to 300 degrees celcius..

                        Why don't they make those tutorials factual correct?

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                        0
                        • hekH Offline
                          hekH Offline
                          hek
                          Admin
                          wrote on last edited by
                          #16

                          Reminds me of this (disturbing) video...

                          https://www.youtube.com/watch?v=5QajKC_EyXI

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                          1
                          • mfalkviddM Offline
                            mfalkviddM Offline
                            mfalkvidd
                            Mod
                            wrote on last edited by
                            #17

                            http://makezine.com/2016/03/08/beautiful-woman-soldering-stock-photo-wrong/

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