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ESR meter upgrades

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    #151
    Re: ESR meter upgrades

    yep, and not a full 49' type, a low profile one.

    you can probably salvage one from some junk

    Comment

      #152
      Re: ESR meter upgrades

      Originally posted by stj View Post
      the 2016 328R looks good.
      rotary encoder etc already fittted.
      if they had put a programming header on it, it would have been perfect!

      another good option is the banggood unit that has an optional case.
      Page Not Found - Banggood.com
      http://www.banggood.com/DIY-M12864-Graphics-Version-Transistor-Tester-Kit-LCR-ESR-PWM-With-Case-p-997023.html


      or the case may fit the ebay model.
      i hope you notice they are both KITS you need to build.
      How difficult would the build be for an electronics amateur like myself ? (AKA how good are the instructions, if there are any)
      better to keep quiet and be thought a fool, than to open your mouth and remove all doubt

      Comment

        #153
        Re: ESR meter upgrades

        how should i know - i dont know your skills or equipment.

        so what iron and experience do you have?

        Comment

          #154
          Re: ESR meter upgrades

          Soldering not the concern, rather assembly of components to PCB, what goes where

          No need to respond further, found one of the reviewers had posted assembly video
          better to keep quiet and be thought a fool, than to open your mouth and remove all doubt

          Comment

            #155
            Re: ESR meter upgrades

            Originally posted by pfrcom View Post
            Soldering not the concern, rather assembly of components to PCB, what goes where

            No need to respond further, found one of the reviewers had posted assembly video
            can you link the video? as i may look into this upgrade too many thanks.

            Comment

              #156
              Re: ESR meter upgrades

              Before I reprogram my T3, I traced the programming pad and found the RESET pad is not connected to the atmega328 reset pin. Instead it goes to pin 30 (rxd/pcint16/pd0) see attached pic.

              Shouldn't the programming pad RESET be connected to pin 29 (RESET)?
              Attached Files
              Last edited by bc989; 06-10-2016, 03:50 AM.

              Comment

                #157
                Re: ESR meter upgrades

                Originally posted by vinceroger69 View Post
                can you link the video?
                https://www.youtube.com/watch?v=rSLW...ature=youtu.be
                better to keep quiet and be thought a fool, than to open your mouth and remove all doubt

                Comment

                  #158
                  Re: ESR meter upgrades

                  Originally posted by pfrcom View Post
                  https://www.youtube.com/watch?v=rSLW...ature=youtu.be
                  thanks theres some good videos on his page.

                  Comment

                    #159
                    Re: ESR meter upgrades

                    Originally posted by bc989 View Post
                    Before I reprogram my T3, I traced the programming pad and found the RESET pad is not connected to the atmega328 reset pin. Instead it goes to pin 30 (rxd/pcint16/pd0) see attached pic.

                    Shouldn't the programming pad RESET be connected to pin 29 (RESET)?
                    can you double-check those pads, they use that to program them after assembly.
                    Attached Files

                    Comment

                      #160
                      Re: ESR meter upgrades

                      about that video - NEVER BEND THE FUCKING WIRES OVER.
                      it makes stuff much harder to remove again without damaging the pads.

                      damn i hate these amateur video's teaching people bad stuff.

                      and make sure you use 99% IPA to remove all the flux afterwards.
                      it may not seem important usually, but on something like this, it can effect the readings!
                      Last edited by stj; 06-10-2016, 05:22 AM.

                      Comment

                        #161
                        Re: ESR meter upgrades

                        Originally posted by stj View Post
                        can you double-check those pads, they use that to program them after assembly.
                        Looking at the schematic and comparing to different high-res T3/T4 on google image is making me think my clone got the RESET connection wrong.

                        I attach 2 better pics to show difference. The 2nd pic (mine) has a via that goes to pin 30 that other T3/T4 don't use.

                        Thinking I should cut and reroute it to the correct pin 29.
                        Attached Files

                        Comment

                          #162
                          Re: ESR meter upgrades

                          there are a few bad points on that board.
                          i would replace the TL431 with an LM4040, and use a 3v3 regulator instead of the pair of diodes top-center.

                          Comment

                            #163
                            Re: ESR meter upgrades

                            Thanks, hope a stable 3v3 will stabilize the LCD and fix the flickering while testing.

                            Also got the rotary encoder (green color) why it needs so much force to push down compared to original button? Surely sore fingers after many component test. Are rotary encoder this hard to press?

                            Comment

                              #164
                              Re: ESR meter upgrades

                              you dont want it geting pressed by accident.
                              and it's intended to have a knob fitted.

                              Comment

                                #165
                                Re: ESR meter upgrades

                                stj is this kit ok in your opinion
                                Error page | eBay
                                http://www.ebay.co.uk/itm/331873741389?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

                                Comment

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