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ESR meter upgrades

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    Re: ESR meter upgrades

    nothing on the back its covered with a white plastic sheet so cant see nothing this thread
    http://www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/75/
    the one by kubi48
    has really good info ive just found it may help us out and how do i tell what size the characters are?
    Last edited by vinceroger69; 07-04-2016, 02:34 PM.

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      Re: ESR meter upgrades

      not the size, just count them - how many across a line!

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        Re: ESR meter upgrades

        2x16 sorry stj its been one of those days

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          Re: ESR meter upgrades

          see, not so hard!

          Comment


            Re: ESR meter upgrades

            i was just thinking about that old character display.
            once the main board is upgraded, want to upgrade the display too?


            Comment


              Re: ESR meter upgrades

              I have got a spare original type lcd with a blue backlight but never fitted it although your link does seem a better option though, stj what are the mounting point things called the pins with plastic on that you solder on to the lcd pcb that then pushes into the connector on the main pcb i looked yesterday but cant find nothing listed.

              Comment


                Re: ESR meter upgrades

                the pins are 2.54mm pinstrips,
                the sockets are sold at rapid, but i cant remember the name - i do have a few though from a repair job.

                Comment


                  Re: ESR meter upgrades

                  Originally posted by stj View Post
                  the pins are 2.54mm pinstrips,
                  the sockets are sold at rapid, but i cant remember the name - i do have a few though from a repair job.
                  Thanks just found some on ebay now and once all my parts come i will update my 2016 version tester first and then modify my old tester as and when i have time etc im just waiting for the usb programer to come now then i will need the latest update files for the 2016 tester if you have a link many thanks again stj.

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                    Re: ESR meter upgrades

                    i will build one when you get the hardware together.

                    Comment


                      Re: ESR meter upgrades

                      thankyou as you know this is the kit i got from ebay i beleive the ic is totally blank so will need all the files im new too all this programing stuff but i get theres is some type of eeprom files? that boot the tester up backlight font size etc then the added files to test diffrent componets etc with new updates to make it work more acurate and add more functions.

                      Comment


                        Re: ESR meter upgrades

                        it's a flash file and an eeprom file.
                        flash holds the software, eeprom is used to store fonts & stuff.

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                          Re: ESR meter upgrades

                          can you work out the wiring on the lcd connector for me,
                          trace it back to the chip pins.

                          Comment


                            Re: ESR meter upgrades

                            stj with this spare meter the 2x16 screen one, i think the modifications i will do just do is swop for the blue backlight lcd i have already and add the 16 mhz crystal and 2 capacitors and remove D1 and swop it with the lm4040 also change the main ic for the larger capacity one im waiting for and add the header to program it all , as this is only going to be a spare meter.

                            Comment


                              Re: ESR meter upgrades

                              no, d1 is power related - leave it alone.

                              you fit the lm4040 with a 2k2 1% resistor.
                              look in your pdf.

                              btw, if you fit a blue display you may need to change the resistor driving the backlights - blue leds use a higher voltage than green ones.

                              Comment


                                Re: ESR meter upgrades

                                ok so D1 i wont touch
                                is this the section you mean in the pdf ?
                                The additional 2:5V
                                precision voltage reference connected at pin PC4 (ADC4) can be used to
                                check and calibrate the VCC voltage, but is not required. You can use a LM4040-AIZ2.5 (0.1%), a
                                LT1004CZ-2.5 (0.8%) or a LM336-Z2.5 (0.8%) as voltage reference. If you don't install the precision
                                voltage reference and you don't add the relay extension, you should install a pull up resistor R16 to
                                PC4 with a higher resistance value (47k). This helps the software to detect the missing voltage
                                reference. A optional ISP connector has been added to easier load new software versions to the tester.

                                Edit! im going too take some good pictures later of my pcb that way if you have a few spare minutes can you highlite what i need to change just so i get it right in fitting the LM4040 and the resistor thanks stj
                                Attached Files
                                Last edited by vinceroger69; 07-07-2016, 04:19 AM.

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