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The distance (9*160mm with connectors) is quite high.
Yes, using lower resitance pullups is a good idea. You could go even lower - mabe 1k?
If that still does not work, I'd try a lower I2C speed.

Edit:
Err.. ok its too late-
going to bed .. should not post wrong things.

MicroMod Teensy <--> Teensy MicroMod
So, these are two different versions.

I have a Micromod board... didn't bother unboxing.. :) It's for the MicoMod Teensy 3.2 Luni board I didn't solder...
...

Its indeed the same schematic as in the datashhet.
Note the datasheet says, for lower frequencies (as we have) you can omit the output filters.. (but hey, it's just a resistor+cap) - adding them...

Here is a schematic:
23916
taken from here:
https://electronics.stackexchange.com/questions/419171/pcm5102a-analog-output-level-not-what-i-expected.

I'd just use the breakout and solder it to...

Special Agent 007 (his name is Rom. John Rom.)
found it :)

Agreed, the PCM5102A is good.

Depends on how much sense it makes for users to lose a lot of functionality just to have a small form factor - that with an unrivaled fast CPU.
I think many would favor a good display.
That's for...

USB is much faster than Hardwareserial, so it receives much faster than Serial1 can send it.
You want something like



while (Serial1.availableForWrite() > 0 && Serial.available()> 0) ...

would just use the bounce library.
Since this is just about mechanics, it is not necessary to use interrupts at all. It makes no difference if you know the state of the switch within 50 nanoseconds...

What are these "encoders"? Link?

Seems to be I2C?
How many pullup resistors are there, and what value?
How long is the connection in sum?

I said writing a new file is slow. Or, more exactly, opening a new file for writing is slow.

Edit: Opening to append data to a file is slow, too.
Best and fastest is to open and close a file...

Please notice, that your chunk size of 1200 is not optimal - a block is 512 bytes - so (2*512) would be better. Not sure how Bills library handles that. Perhaps it has its own buffer, so your chunk...

MicroMod adapter boards for all teensy models would be a nice thing.
(as long I don't need to solder the connector ;-)

Resampling for inputs is a good thing.

Have measured how long it takes? (cpu usage)
How much memory does it need?
Would it work if I set the sampling rate of the library to 48k (or perhaps 96k)...

I installed Wireshark. Thanks again. Did not know that it can monitor USB traffic, too.
Oh my... that allows to look at other devices, too...

Because the pins are needed for other things.

Usually I2C chips support different adresses, so for most applications three busses are enough.

Other things are important, too.

I don't like the density of the connector. And that it is needed.

thinking of the 2nd row.. i had the idea, it could be a (oh my english..searching for the right vocable.. ) mouser says it is a "Card-Edge-Connector" (German "Leiterplattenverbinder")
First row -...

I like the double rows, too.
The "problem" with the double row is, that soon there will be users who solder both and place the Teensy into a breadboard and wonder why there is smoke or something...

I hope we don't need wireshark..! But it is a nice find. Thanks!
The sourcode of librtlsdr is available (see Post #12) - I hope that it is enough.. at a first glance it looks ok, and seems to have...

Maybe yes.
Or, perhaps the manual is wrong about the default. There are several things with wrong info... i.e. the all the PFD had wrong values at least in rev 1.

Don't trust the printed...

The IGP is already running with 150MHz.
Not sure about the GPT frequency (would have to take a look..)
The clock diagram on Page1016 (Rev Manual V2) say it can be switched between IGP and 24MHz...

Under preferences is a menu "Cortex Debug"
Interesting, I wonder what will happen there with Teensy!

Usually, it takes a few days after the release.

Edit: There is no release on Arduino.cc?
All I see is a Beta 3.

Should be doable, but need some little changes to the core files... maybe Paul Stoffregen reads this and adds some macros...

Edit: The Teensy loader will not find it anymore but there's the 15...

I hope I understood your question right... maybe, not...
I don't get what this has to do with the bootloader, how a bootloader can help to remap inputs, and what the bootloader should do exactly....

Yes, the signal quality is good.

Edit: In Europe te least, GSM can be at 900MHz (parts).
Air traffic is in the >100MHz Range. Transmitting an ILS signal would be not a good idea ;)

In fact, it's both <- that was with a Teensy 3.2, many years ago (turn on Audio).
All pins disabled.

Single pin: With T4 and using 5cm wire, I can receive it with WFM in best quality HIFI stereo...

Arrived today. Well. China.
Its defective, shows stripes on the left side and some more issues like bad colors.
Lets see if they send a new one.. :)

Its good enough to do some tests with VGA...

Thanks :) That's what I'm "seeing" too.

Of course, the metal box would be a good solution.

Which library?

@Mark: Great! Thank you.
Can you repeat this with FPU usage, and I2S enabled? (don't know if the if makes a difference wether there is a load on the pins or not.. maybe try with audioshield added?)...

It really should work with any of the 3 S/PDIFs...

Hi Kurt,
it prints this:


USB HID Device Info Program

This Sketch shows information about plugged in HID devices

*** You can control the output by simple character input to Serial ***
R...

please not.



A optional extra shielding, housing would make sense to sell... the faster Teensies more and more become a transmitter.. a lot of EMI :)
Try to use a DAB radio in the same room!...

Yes, Happy Birthday and all the best!

The new Stick arrived sooner than I thought.
Attched the output from Usb Device Tree Viewer.

Interestingly, it does not show the IR Recceiver (but it must be there).

...Linux says, it is "usb-storage" (but it isn't)


frank@frank-lubuntu:~$ lsusb -v -t -d 1d19:
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/12p, 12M
|__ Port 1: Dev 2, If 0,...

Here is the Windows software: https://airspy.com/download/

LOL :)
Ok, if you want to use it for other things than FM you'll need different Antennas etc. , and for lower frequencies a little hack to the hardware is needed (Or a frequency shifter)
But FM...

Kurt, yes, RTL2832U & R820T looks good.
The dump i posted above is from a different one (has a different "tuner"-chip ) but I've oderd the one from the Amazon link I gave above that will arrive...

https://www.amazon.de/gp/product/B07DJT5NHD/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

It is intended for DVB-T, but there is a lot of Linux and WIindows Software (try "Airspy-SDR#") that...

Kurt, thank you very much. I'll post what linux says :)

Yup, but the receivers with RTL2832 first (even if they have a "RTL2832" they have different additional chips but I think I can handle that when the communication is working.)
I can send you a link...

MjS: No, i dont want the IR.
I need the first "child", i think.

It is a DVBT receiver.

Its think its good to have a more generic "howto". Later, i want to add the next device.. audio :-)

To make it more clear - I know which values to send, etc - I just need help with the libary.

Ok,

an easier question.

If I want to support a new USB device for the USBHost library - where do I start? Which are the first steps?
I've attached all info as Windows sees it.

My Program...

It's for a DVB-T stick, used as a SDR.
Yes, I sometimes followed these threads - but have no Idea what is supported and what not.
It would be more for the T4 - don't think 3.6 has enough power. And...