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Paul, Kurt, - Thanks for the suggestions - that is helpful and I will perform some additional tests. Glad to hear you recognize a common chip in use. As I said in the OP, I have already tried connection using the serial.ino example in the library, with no result other than the first message on...

Perhaps I'm too ignorant to understand how that helps. I don't want to connect using a PC (been there, done that). Yaesu provides a driver for use with a PC. What am I missing?

Yes, writing the custom driver to get the devices to communicate is exactly what I need to do. The specific device in question is a Yaesu FT-891 radio transceiver, although knowing that is of little help in advising me how to move forward. As I said, the protocol is simple and well defined (see...

I am starting a project using a Teensy 4.1 and ILI9341 to create a user interface to a radio transceiver via USB. I have the basic UI graphics and user touch screen inputs for the display working satisfactorily and am ready to move on to the USB connection. However, I am new to the details of...

Frank, Agreed!! To that end, I would be interested in having you do a short summary of the theoretical advantages (as well as any possible disadvantages) of using this approach to SDR, along with your real world observations of how well your implementation reflects those theoretical...

Frank, with all due respect since this is your thread and your development project..... What is off topic is sometimes a gray or fine line. Sometimes a subject is merely tangential, but still pertinent to the primary thread. When I look at many software projects, such as your masterful...

There were many versions of the SoftRock. Early versions were crystal controlled for the LO. Subsequent versions that were more frequency agile used an Si570 to generate the LO. These also used an ATTiny controller that provided host PC connection to the Si570 via USB, and also handled switching...

Derek, thanks for the reply and all the additional information on where your ongoing development is going. It's exciting to hear of the prospect of the complete wrapper you describe! Yes, the SoftRocks use the Si570 to generate the LO signal, and the ATtiny is used to control the BPF as well as...

This is an impressive undertaking and the results are equally impressive. The participants in this discussion have knowledge of the inner workings / underlying mathematical concepts etc. at a level I will never fully comprehend, however I find the discussion both interesting and I do learn...

Andy - that looks very interesting - congratulations on your success. I suspect it may have a variety of uses for different people. One thing that comes to mind is interval recognition training / ear training. Did you have a specific application or use in mind when you started this work? Is it...

neurofun - awesome, just what I'm looking for - thanks!!

Old fart + total newb to Teensy here, so please be patient. I bought a 3.2 and an ILI9341 a couple years ago - had numerous projects in mind, but then some "life happens" events got in the way and it all sat in a drawer. I am resurrecting it and going to take another swing at it now. As I get...