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John: I would simply plug in the USB connector on the new Teensy, before you even solder pins on it, and run the ASCII Table example program. I use this program (Example-->Communications-->ASCIITable)

Thanks Bill, I appreciate your help. I've had a lot of years and experience building electronic gadgets but has really perplexed me. I've been through 2 sets of Teensys, adapter boards, and audio

The point is good that the half-voltage reference should not have noise applied.? But, for the audio range we work with, this is taken care of by proper capacitors.? It is an AC problem, so the VR

Cool! Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa Grand Piton –

You probably know this but there have been several papers written on the weak signal performance of A/D and D/A converters being a function of the quality of the voltage reference quality. Noise at

I can drop a handfull at your spot. I will look up and post my spots also Tim

Terrance, I believe you are correct, it is straightforward. ? The I16 version does the tough part and the I32 to F32 conversion works just like the 2-channel version. ? The trick is that I2S does

John… Two options. If you programmed the teensy separated from the MAIN board and ran the teensy + hat off the just the USB cable powering the teensy thru the computer… and it doesn’t see the

Still no I2C device found :( I ohmed out all the connections between the stacked header pins through the Teensy and to the Teensy Audio adapter. I found some intermittent connection issues, which I

Ok well I’ll be selling boards and kits in spot #2607 and I can put up a sign to direct them to your booth for those cables if you want… Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ

I've thought several times about creating a quad I2S object for the OpenAudio library.? At a glance it doesn't look that difficult.? Then I think if it was that easy, someone would have done it, so

Yes I will have 2 flea market spots in the new area, paved near where the EMC truck usually parks Tim

Note that this 16 bit limitation of TeensyDuino is apparently why the dynamic range of the "software volume control" is limited.? 16 bits is enough, but you need to be able to output that into a 24

You be at Hamvention? Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa

If you need a nice clean jumper I have a lot of these. anyone who wants one I will send on my nickel. Tim

I recently did some ADC measurements in preparation for an update to my Audio VNA.? I mention it here as I think it has some stuff of interest to the T41 project.? The measurements are on-going, but

It should be finding the hat at WIRE at 0x0A… Its either not recognizing WIRE or its shorted somewhere. You can remove the teensy and hat off (as one unit)… jump the voltage tab that you cut in

It is still reporting No I2C devices found :( Any advice?

Thanks Bill. Good idea Oliver.

Right behind you 78!