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  • @ tinkerer
    Thank´s for the explanation. Do i have to change R4 and R39 on RX also?

    @Sido
    I have made some PDF´s to the changes.
    Attached Files

    Comment


    • Thanks mschmahl for posting the updates.

      Some diodes in the RX circuit have a prefix 2Nxxxx. what should they be?

      Cheers Sid

      Comment


      • Originally posted by mschmahl View Post
        @ tinkerer
        Thank´s for the explanation. Do i have to change R4 and R39 on RX also?

        @Sido
        I have made some PDF´s to the changes.
        Yes, R4 and R39 on the RX board should be the same.

        Comment


        • Originally posted by sido View Post
          Thanks mschmahl for posting the updates.

          Some diodes in the RX circuit have a prefix 2Nxxxx. what should they be?

          Cheers Sid
          Thanks for the feedback. As you see on this schematic, it is a work in progress. The audio with the 4046 worked, but I was trying to improve on it. This is why we have another audio, using a 555 floating on the page. For the 2 diodes in question I used yellow LED's with a forward voltage drop of about 2.4V.

          It is extremely expensive for me to buy parts here, so I use what is available in the parts box. Not always the most appropriate.

          All the best
          Tinkerer

          Comment


          • Originally posted by sido View Post
            Hi Tinkerer, thanks for posting the link to Diptrace EDS.

            As a matter of interest and sorry to all being off topic, I read a post of your's from early 2011 and i gathered that you may have been using Diptrace and now changed over to Designspark. Correct?? and if so why??

            I have downloaded Diptrace and trying to learn it.

            Cheers Sid
            I downloaded Diptrace, but never got to really use it. When DESIGNSPARK appeared, I looked at it and found that it is the first full size, no restrictions EDS, with 3D, SPICE simulation and a parts inventory of 85,000 parts in 2D and 3D, totally free with no strings attached and no limitations. Regular free updates, tutorials, support and more.
            You also get a BOM that is linked to a parts catalog of a worldwide distributor and Datasheets.

            It is just too good to be passed by. Now that I am getting used to it I don't think I will ever change.

            Tinkerer

            Comment


            • Updated Schematic in PDF and for Designspark
              Attached Files

              Comment


              • Am I looking at your circuit correctly ?
                the signal comes out of C29 and goes to ground ?

                Comment


                • Originally posted by 6666 View Post
                  Am I looking at your circuit correctly ?
                  the signal comes out of C29 and goes to ground ?
                  Please look at the schematic at the post below.
                  http://www.geotech1.com/forums/showt...947#post155947

                  Comment


                  • Hi
                    the penny dropped maybe its a RC filter doh !
                    thats my seniors moment for the week.
                    Attached Files

                    Comment


                    • Originally posted by 6666 View Post
                      Hi
                      the penny dropped maybe its a RC filter doh !
                      thats my seniors moment for the week.
                      You are not helping anyone by posting wrong versions of the circuit. this is not the circuit posted at http://www.geotech1.com/forums/showt...947#post155947.

                      Unfortunately I am living in a country that is going down the drain completely. Whatever food you can get, is rationed. There is no sugar since many months, there is not flower, no oil, no chicken, no meat. THERE IS NOT EVEN TOILET PAPER. There is no president either. The Cubans have taken over the country.
                      The electric power goes out nearly every day and sometimes no power for days. When there is power, there are high voltage spikes that destroy the appliances.
                      No wonder my computer is having fits and the safe storage hard drive crashed.
                      I posted what I could find in the backup work files for mschmal to have a Designspark circuit to build on, since he is so kind to help.

                      You are very welcome to help, but posting wrong versions does not help anybody.

                      Comment


                      • Originally posted by Tinkerer View Post
                        You are not helping anyone by posting wrong versions of the circuit. this is not the circuit posted at http://www.geotech1.com/forums/showt...947#post155947.

                        Unfortunately I am living in a country that is going down the drain completely. Whatever food you can get, is rationed. There is no sugar since many months, there is not flower, no oil, no chicken, no meat. THERE IS NOT EVEN TOILET PAPER. There is no president either. The Cubans have taken over the country.
                        The electric power goes out nearly every day and sometimes no power for days. When there is power, there are high voltage spikes that destroy the appliances.
                        No wonder my computer is having fits and the safe storage hard drive crashed.
                        I posted what I could find in the backup work files for mschmal to have a Designspark circuit to build on, since he is so kind to help.

                        You are very welcome to help, but posting wrong versions does not help anybody.
                        Hi Tinkerer, I live in Australia, and in the reports through the world Media so far that we a moving forward from the rest of the Global civilization as a stabilized economy....well we are experiencing the effects of the European Economic downfall, even though our unemployment rate is stated to be so low (5.9%). Our situation is worse than stated

                        Why....They tell us that they have created so many jobs....(They dont tell us of the many that are lost in comparison) Our current Government does not tell us that most people are in Part Time/Casual work, therefore make it look as employment is so low, which is NOT.

                        What keeps our Economy afloat is the ubundance of mineral resourses (mining) and the Asian continent's interest in our vast and expansive mineral and agricultural supply...wich our current Government and predessesors have agreed to such FATAL transactions

                        Alot of our Land has been sold off overseas. I can imagine what our children and Grandchildren are going to face in the near distant future.

                        Not good times for all humanity


                        If their is any parts you may need Tinkerer, i am more than happy to ship to you providing there is going to be no Customs issues

                        Cheers sid

                        Comment


                        • Probably the End is near for Mr. Chavez, but not for Venezuela's woes. It'll take a long time to undo the damage.

                          Comment


                          • Originally posted by Carl-NC View Post
                            Probably the End is near for Mr. Chavez, but not for Venezuela's woes. It'll take a long time to undo the damage.
                            Ha, please eleborate if dont mind......I am lost

                            Cheers sid

                            Comment


                            • Sorry to hear this Tinkerer.
                              I hope everything gets better soon.
                              Aziz

                              Comment


                              • Sorry for my uncomplete update. I have now updated to the reference-PDF Tinkerers_SB_MO - Schematic from here http://www.geotech1.com/forums/showt...947#post155947
                                with all changes, that we have discussed previously. I hope i have not done a mistake.

                                Here are PDF and Schematic for DesignSpark

                                @tinkerer
                                If i can do something for you, let it me know.

                                Greetings from Saxony
                                Attached Files

                                Comment

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