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No cables attached except for Ribbon cables and rf coax. Nothing attached to Audio Hat. I think I will start on new Main board (don't believe I could get hearers off even with my vacuum sucker) and

Very uncharacteristic... Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa Grand

*** I asked on the "Audio" forum. I also asked on the "technical questions" forum. No Joy. I even posted my usb_desc.h. I was hoping the Paul Stoffregen would take one look at it & tell me what I did

Lots of examples out on the PJRC site... Lots of the people out there are MIDI and Sound people... know a lot about USB stuff... If you ask a question in the forum, you may get too many answers...!

All, I have been working on CAT ( remote control ) for the T41. I re-architected it to a data-driven approach that is much cleaner and will be easier to maintain and expand. I have the basics running:

Tried 2 new Audio Hats no luck :( Tim

--------------------------------- I am going to flat out lie and say I've never missed a pin or soldered it incorrectly. I have half a thought that hopefully someone can either finish or explain why

Yeah I’ve had trouble with those cheap Chinese sockets too. Buy the good ones… they are just a few cents more. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ

Cables could be an issue too… Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa

Rick Same here I did eliminate the extender and just used long pin female headers to get hat above heat sink. I have to play with reseating Teensy to get I2C to work properly. Once tweaked it seems

Didn't you say that you've already trial a second audio hat? Jack, W8TEE

I actually had to ditch the extension board. After several intermittent software issues I discovered that by pushing down on the teensy and restarting it would work normally for a while only to happen

Been thru that once Jerry need to reflow again, it is definitely one of the Teensy pins. Update, I was able to get 64 beta to load and recognize all the I2C addresses including Audio Hat, and auto rx

I would carefully check all the soldering at the Teensy and the audio hat and the offset board - I found a few Teensy pins that I hadn't actually soldered. - Jerry

Ok… Good to know. I’m winding coils too! Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner –

Yes I hold button until it goes into slow flash mode as per Teensy site suggestion. Tnx for help, I am busy winding coils so it is not an issue at moment. RX is fine without audio hat installed. Tried

On thing Tim… Have you been resetting the flash memory every time you load a program? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal

Very strange Tim… but we will help you figure it out! Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois

I2C scanner found all the addresses However program(ver50.2)will not run with audio hat installed :( Tim

And…. If it works only sometimes, there is a bad connection somewhere. Probably either a solder connection of one of the IDC cables. Pictures are worth 1,000 words! Dr. William J. Schmidt - K9HZ