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DIY - Lipo Voltage Monitor (In Flight)

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    #31
    Hi zattan22,

    I am unable to open the PDF file (after the data migration) which shows the 1st version voltage monitor circuit. So can remember the detail. If you have a copy, please repost.

    Based on the text for 1st version, you should us 510K ohm with 2.6M ohm resistors.

    Wonder why you are using the 3.9M ohm resistor. Please also make sure you have the correct value by measuring with a ohm meter.

    Please change the resistor to the correct impedance.

    hOpE ThiS hELPs


    Originally posted by zattan22
    sorry....
    for the misunderstanding.

    im doing the 1st version of volt meter....
    it only have 2 resistor...

    for the version 2,
    i have give up liao

    the version 1
    has only 2 resistor
    1st R1 is 3.6M ohms and R2 is 510K ohms

    but i can only manage to get R1 3.9M ohms
    Heli
    Honey Bee CP2 : Sold (Maiden:17 Dec 05)
    Trex 450XL (CDE) : MM450TH, Quark 33A, GY401, JR RS10DS (Maiden : Align Frame - 1 Jul 06; SuperFrame - 29 Aug 06)

    Plane
    Estarter : Align 450s, Align 25A, Electron 6 (Maiden :16 Sep 06)

    PT-17w : Sold
    Buggy
    Acme NB 16 : Half 8 Nitro (Maiden :23 Dec 06)


    Transmtter : JR PCM 9X II, Aggressor SRX
    Charger : Tahmazo T15
    Balancer : TP205
    Battery :Thunder Power, FullRiver, Warbird


    Comment


      #32
      i have double check the values
      R1 is 3.6ohms
      R2 is 510K ohms

      but still cant find the R1

      anyway,

      if u have done the version 2
      can i do it without the triming pot??

      Comment


        #33
        Hi,

        I have not done version 2. If you have the component values correct and the wiring correct and the tolerence of the component correct, it should work.

        Originally posted by zattan22
        i have double check the values
        R1 is 3.6ohms
        R2 is 510K ohms

        but still cant find the R1

        anyway,

        if u have done the version 2
        can i do it without the triming pot??
        Heli
        Honey Bee CP2 : Sold (Maiden:17 Dec 05)
        Trex 450XL (CDE) : MM450TH, Quark 33A, GY401, JR RS10DS (Maiden : Align Frame - 1 Jul 06; SuperFrame - 29 Aug 06)

        Plane
        Estarter : Align 450s, Align 25A, Electron 6 (Maiden :16 Sep 06)

        PT-17w : Sold
        Buggy
        Acme NB 16 : Half 8 Nitro (Maiden :23 Dec 06)


        Transmtter : JR PCM 9X II, Aggressor SRX
        Charger : Tahmazo T15
        Balancer : TP205
        Battery :Thunder Power, FullRiver, Warbird


        Comment


          #34
          Zattan

          I think I have the 3.6M ohms resistor, I can give it to you. But let me go hme and find them next week 1st.

          Not necessary to follow the docs value, it depends on your preferred cut-off voltage. Just apply Ohms law and the chart
          _____________________________________________
          "Success is the ability to go from failure to failure without losing your enthusiasm."
          "Great works are performed, not by strength, but by perseverance."

          Comment


            #35
            still seraching for the R1

            Comment


              #36
              Hi zattan,

              Did you try to get from Sim Lim Tower, there are many shops at basement that sells resistors and capacitors placed in tag component drawer. I think they charge 15cents a piece. Most shop will have the value you needed, just ask them if you are not sure.

              Originally posted by zattan22
              still seraching for the R1
              Heli
              Honey Bee CP2 : Sold (Maiden:17 Dec 05)
              Trex 450XL (CDE) : MM450TH, Quark 33A, GY401, JR RS10DS (Maiden : Align Frame - 1 Jul 06; SuperFrame - 29 Aug 06)

              Plane
              Estarter : Align 450s, Align 25A, Electron 6 (Maiden :16 Sep 06)

              PT-17w : Sold
              Buggy
              Acme NB 16 : Half 8 Nitro (Maiden :23 Dec 06)


              Transmtter : JR PCM 9X II, Aggressor SRX
              Charger : Tahmazo T15
              Balancer : TP205
              Battery :Thunder Power, FullRiver, Warbird


              Comment


                #37
                If u can't find the exact Ohm resistor, you can always use:
                1. Two or more resistor to connect in series (adding ohm) or in parallel (1/R = 1/R1 + 1/R2 + and so on)
                2. Uses potential port (or variable resistor) and tune to the exact Ohm you want.

                SH

                Comment


                  #38
                  Zattan

                  as promised, got hme today and found them. Just tell me if you still need them, I can even give 10 of the 3.6M Ohms (1%) to you.
                  _____________________________________________
                  "Success is the ability to go from failure to failure without losing your enthusiasm."
                  "Great works are performed, not by strength, but by perseverance."

                  Comment


                    #39


                    Originally posted by balance_mind
                    Zattan, as promised, got hme today and found them. Just tell me if you still need them, I can even give 10 of the 3.6M Ohms (1%) to you.
                    Heli
                    Honey Bee CP2 : Sold (Maiden:17 Dec 05)
                    Trex 450XL (CDE) : MM450TH, Quark 33A, GY401, JR RS10DS (Maiden : Align Frame - 1 Jul 06; SuperFrame - 29 Aug 06)

                    Plane
                    Estarter : Align 450s, Align 25A, Electron 6 (Maiden :16 Sep 06)

                    PT-17w : Sold
                    Buggy
                    Acme NB 16 : Half 8 Nitro (Maiden :23 Dec 06)


                    Transmtter : JR PCM 9X II, Aggressor SRX
                    Charger : Tahmazo T15
                    Balancer : TP205
                    Battery :Thunder Power, FullRiver, Warbird


                    Comment


                      #40
                      Thanks for the compliment w_kby
                      _____________________________________________
                      "Success is the ability to go from failure to failure without losing your enthusiasm."
                      "Great works are performed, not by strength, but by perseverance."

                      Comment


                        #41
                        yo thanks bro

                        seeing u so faster, like i have not really thanks you..........
                        MORNING BUSZZZZZZZZZZZ

                        btw,

                        where do u you fly???

                        may i join in????

                        Comment


                          #42
                          No Prob zattan.

                          Ya like very fast hor, think also because of the rain.

                          Well, I have sold my Tx recently and now no proper Tx to fly my helis.

                          You may like to join the Yishun FF. I will be going back there again after getting my next Tx .

                          There are alot of experienced flyers there who are very willing to help. Bring your Lipo V monitor there too if you got any prob. I believe w_kby can help since he has done it before. Most importantly is to choose the right resistors according to your preferred cut-off voltage.

                          Btw, there are a couple of FFs too. Just choose the one most convenient to you. Hope to see you again bro...
                          _____________________________________________
                          "Success is the ability to go from failure to failure without losing your enthusiasm."
                          "Great works are performed, not by strength, but by perseverance."

                          Comment


                            #43
                            COOOOOLLL .

                            Is it work with Ni-MH battery 8.4v?

                            Thanks!

                            Regards,
                            Arto.
                            Dynam Hughes 300 fp with stock blades and GWS DD tail upgrade...
                            TX: 72.830MHz, mode 2.


                            Can hover already, now learning orientation...

                            Comment


                              #44
                              Glad it has thread has help you.

                              Originally posted by Artosoft
                              COOOOOLLL .
                              Is it work with Ni-MH battery 8.4v?
                              Thanks!
                              Regards,
                              Arto.
                              Heli
                              Honey Bee CP2 : Sold (Maiden:17 Dec 05)
                              Trex 450XL (CDE) : MM450TH, Quark 33A, GY401, JR RS10DS (Maiden : Align Frame - 1 Jul 06; SuperFrame - 29 Aug 06)

                              Plane
                              Estarter : Align 450s, Align 25A, Electron 6 (Maiden :16 Sep 06)

                              PT-17w : Sold
                              Buggy
                              Acme NB 16 : Half 8 Nitro (Maiden :23 Dec 06)


                              Transmtter : JR PCM 9X II, Aggressor SRX
                              Charger : Tahmazo T15
                              Balancer : TP205
                              Battery :Thunder Power, FullRiver, Warbird


                              Comment

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