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Ferda

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Everything posted by Ferda

  1. Hi Ulli, Everything works properly. The new version includes an acknowledgement to "Ulli" on the flash page! Hence, you did a great contribution. I hope your AD2 is going to reach you soon and can make your own experimentation. Best wishes, Ferda
  2. Hi Ulli, Jake returned positively. Can you please contact with him over "stuffmade-248(at)yahoo(dot)com". He says "If someone is willing to let me borrow their AD2 for a week or so to fix this issue, then I'd be happy to see if we can make that work. Please ask them to email me for details. Thanks! " Best wishes, Ferda
  3. Hi @Attila, Many thanks for your prompt reply. I could not find this table on the reference manual SDK from Digilent. Was that a previously uploaded document? Can you please route me to link of PDF file? BW, Ferda
  4. Hi Attila, The developer says " Yeah, the hardware is exactly the same except for the variable output power supply in AD2. I suspect the issue is the API call to retrieve the AD status where it returns various info like internal temperature, USB voltage and current, plus status of the power supplies, like on/off, voltage and current. I suspect this call returns the info slightly differently on AD2. It would probably be a 5 minute fix if I had an AD2, but I can't really justify spending $300 just for this." Do you able to help? Best wishes, Ferda, NB.This should be the latest version; https://www.dropbox.com/sh/ylf9i87dac65q2k/AABA_Rqgm1r5Ql0MsNyM7ajta?dl=0
  5. Hi Fonak, Thanks for your response. Unfortunately, the author or the developer removed the program from the web (probably due to the commercial importance). However, he still has some plugins (eg. audio analyser suite etc.) on his youtube account with download links. I think, the hardware section has several different modifications such as you suggested to use (LT1210, I am not sure from this driver, perhaps a smaller one such as OPA569 etc. can be a lighter version). If I would access to a source code perhaps I would give a try to modificate it with some effort. However, I am not able to reach it anymore. Btw, if you need previous versions of the advertised software on the video I may have in my download folder which I can share privately with you. Best wishes, Ferda
  6. Hi All, I am a material science chemist and using impedance method to characterise the dielectric properties of some novel materials by paralel plate capasitor method. As you can imagine there are a few brands who produce decent instruments for these kind of measurements. But, with the developing technology it is possible to observe similar readings with AD-IA combination compared to old 100K$ instruments. I am also an electronic hobbiest and bought an AD2 just for testing the idea and compared the result with an instrument. On that time the IA board was not available but, the readings was very similar to a commercial instrument. Anyway, now with the IA option it is more easy to make measurements. But, the biggest problem with the current setup non-autoranging the resistor values. Sure, this can be overwhelmed by making some coding. However, the IA add-on board is very complex to modding, i.e. the realys have laching function which can not be released by applying reverse control logics. Furthermore, there are also several other lack of hardware functions, such as high output current, limited input impedance of the CH1/CH2 althoug the input opamps has very high imput impedance etc. Hence, I think in the first instance the IA board should have auto ranging function. This can be done by the DIGILENT engineers, which is out of my experience and I do not have time to understand communication protocol and commands for communication of AD2 with computer. The second development again can be done by digilent which can be a decent IA board (IA2). This second release should have higher WG current to measure lower impedances and high input impedance function to read high impedances (There is a video on You-Tube mentioning a basic board ). I think these add-ons can increase the importance of AD and Digilent which did a great job upto now. Best wishes
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