78RPM, thanks for the clues. I have often been frustrated in my attempts to get infomation about the gadget freak projects. The useful details have always appeared to be withheld, so usually I just abandin the effort to get any details.
William K, I discovered that you can get to the build instructions by clicking on the link above the one you probably selected. Go to the most recent Gadget Freak column and look at the links to other Gadget Freak blogs in the right column. Click on #240 and you should get the link that has build instructions.
William K, It looks like the Build Instructions have retired from the article. If you wish to send me an email at email@example.com I will reply with the parts list and build instruction, assuming the editor has no objection.
You are correct that the devices are Analog Devices. The mic is an ADMP504, the difference preamp is an AD8273, and the output amp is an AD8397 configured as a difference amp to handle the balanced line from the preamp stage. The quality of sound is excellent and would probably serve in a recording studio with proper mounting.
Maybe I'll see you in another Digi-Key Design News webinar next week.
This is a project that is very interesting, even moreso the version using the satellite TV reflector. So where is the information, I would like to build one of them. I did not get the name or model number of the microphone, but it sounds like an Analog Devices type thing. Where is the project build information, please?
This technology would be great for nature documentary directors, who must stand 200 yards away from dangerous animals while they record. The low signal-to-noise would enable them to pick up sounds from a distance without a lot of distortion.
Last year at Hannover Fair, lots of people were talking about Industry 4.0. This is a concept that seems to have a different name in every region. I’ve been referring to it as the Industrial Internet of Things (IIoT), not to be confused with the plain old Internet of Things (IoT). Others refer to it as the Connected Industry, the smart factory concept, M2M, data extraction, and so on.
Some of the biggest self-assembled building blocks and structures made from engineered DNA have been developed by researchers at Harvard's Wyss Institute. The largest, a hexagonal prism, is one-tenth the size of an average bacterium.
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