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duff, It looks like it is (mostly) working now. Here's a printout from your 'sleep_all_wakeups' example: Opening port Port open Port open Timer Driver number indicator: 36 | index: 0 Port open Timer Driver...

@AshP … Post #30 is non-interrupt solution using a dedicated polling loop. The Teensy would be Polling ( sitting in the tight loop ) with all interrupts off waiting for the pin to change, or it could be doing other...

Is the charger an actual Apple charger and not a counterfeit? I seem to recall from somewhere in the past where I read about fake chargers being dangerous. Here's an article that I found just now: Safety tests of...

Hi Paul!! You know, I've been hoping that you would chime in on this! :) I've seen your name come up at least 100 times in all of my searches over the past few weeks regarding these Teensy devices! :) My...

Thank you Paul, for your detailed explanation. First of all, congratulations on the development, I imagine how difficult it was. I forgot to mention that my question is exclusively about their libraries, because I'm...

Crazy as this may sound, polling might be an option. But it comes with huge caveats. You can't do anything else while waiting for the pulse. You also need to have interrupts disabled if you want consistently low...

Here's how to get the fastest interrupt response by directly configuring the port register. I took the code from msg #3, removed all the unused stuff, then substituted these lines for the slow attachInterrupt(). I...

Thanks, hopefully should get merges in before next teensyduino released. Sorry I missed it before this last release. Note I tested my gigabyte by removing its vid from special table, and then verified it did not...

No other connections, just the teensy hooked up to the laptop. I happened instantly when I plugged in the charger.

Did the breadboard have *any* other non-power wires to the world? Like maybe connection to something else which is connected to earth ground? Or something that should have been grounded, but was actually "hot"? ...

@Frank: I've ordered the QRP labs „Receiver module“ and Filters just now.

Hi oddson. I'm considering to have a spare pc, probably with KXLinux or AVLinux for this. Would be less troublesome and faster to implement, once that i already have the hardware. Won't be so elegant for what i wanted...

The case looks great! Would you please publish the STL? I ordered a 3D printer for my son and me, and it looks like a worthwhile project.

There are 2 ways to think about I2S (or any other hardware) capability. 1: Hardware specs - what is possible if you write your own drivers and all the code 2: Well supported software - what you can do easily, with...

Thank you Manitou! 17 years will do it... my product will be "out of warranty" by then... LOL Seamaster101

see https://forum.pjrc.com/threads/48584-RTC-battery-for-T3-2

Hi Paul, I'm designing a product based on T3.6 and using the real time clock with CR2032 battery. Do you know how long the CR2032 battery will last to support the real time clock? I have done my first production...

Yes, the 5v compatibility was the deciding factor. There's a ton of lines here and using level shifters just would have made for a nighmare in designing a board. Not sure I completely understand what you are asking...

I appreciate your response and I hope to continue to learn more about what I can do about this issue of large current flow in this particular project. And honestly this is a considerable amount of stress for me since...

Did you pick the T_3.5 for 5V compatibility or cost? The T_3.6 would have a better chance with faster F_BUS and F_CPU options - even then indeed it will take well executed tricks. Are the group of pins to start the...

I would use a BMP image that has four distinct colours, one in each corner, such as blue, red, green, yellow. So you have four rectangles of colour. This way you can also see if you zigzag maths to redistribute the...

I'd really rather not get into building a flip-flop array to handle this externally - trying to keep the component count at a minimum. An external logic circuit to handle this can be incredibly fast and would fit the...

There is one I2S interface on T3.x from Kinetis I2S description the I2S interface • Transmitter with independent bit clock and frame sync supporting 2 data channels • Receiver with independent bit clock and frame...

@KurtE, PR #23 works fine on the Gigabyte N-key rollover keyboard and my other USB keyboards (plain, nothing special, wired USB). I also uncommented the forcebootmode function just to see what happens. All the...

Sounds like a lot of code to run conditionally. Somebody posted this earlier and results show a T_3.6 at 256 MHz responding to a timer executing and timing a few instructions:: Very-Fast-Interval-Timer If I'm...

OK, tomorrow when the replacement T3.5 shows up I will load up your code and my scope to see what kind of latency it produces. As for the signaling, there is no other electrical event preceding the rise of the chip...

Yes, for the problematic Teensy: Without the LEDs, voltage across is 5.17V. With the LED strip, the voltage is now 0.58V. The LEDs are NOT illuminated.

Frank, Thanks for the info. The QRP labs 'Receiver module' looks like the way to go with maybe the OCXO/Si5351A Synth kit. I recently built Bob Larkins awesome AVNA and a nice 3D printed case to put it in....

Just to be clear, I meant assuming that the ws2812bs are powered by the 3.3v pin from the Teensy (and not from VIN or an independent power source). There you have perhaps 500mA of power from a Teensy 3.x and...

@KurtE, I tried all 4 of my wireless keyboard/mouse combos and all of them work great. Awesome work. I do not have a gigabyte keyboard so I cannot test that but all my other keyboards work fine, So if I understand...

Thanks Paul. Somehow I overlooked the Euroshield as well.

My idea was to see if Koromix can see a path - and has the time - to handle the 'cusp' with a continuously connected device on same port - when it goes across '-1' If the bootloader can read the Ser# from one time -...

Arduino / teensyduino doesn’t seem to have issue with the load / reset and the board comes back with the expected ID. Be interesting to see what tycomm thread has in regards to this.

That '697 ns' on the T_3.5 is showing total cycle time :: same Teensy doing output -- that triggers input Rising -- then dropping the trigger and repeating. So running that code on a Scope would show the response time...

I can attest that a teensy 3.2 can drive 150 NP strip. No problem so far. That's what's on the front of my truck. :) I'll shut up now, sorry to drag this off topic. -jim lee

If I understand your numbers there, it sounds like you are seeing some 600ns latency? Just before I blew this thing up last night I was able to get the latency down from pin input to pin output to about 350ns by...

Thanks gfvalvo and Paul. Implementing that now. will post back with a link to adafruit thread.

Resetting the hard pin on the teensy seems fine and reboots the board with the same serial number. I need to test this function _reboot_Teensyduino() However Tycommander Reset invokes the bootloader and as you...

@Paul : I can see that being low import - might help newbies, and risky to change the tested and working system without extensive testing. @crees : Same process - I removed the code :( … I posted on the TyComm thread...

Minor changes - there was no wait for Serial USB to connect in setup(), so print of test results ended up in the bit bucket. Compiled Fastest + PureCode w/LTO at 256 MHZ and I see it working at 1. Here is the...

interesting. I have the same issue hitting reset on tycommander. However if I hit reset twice I get the board back again the way it should. This issue will add some complexity to custom teensy boards. I have some...

The simplest way is probably to write an interrupt handler to trigger a ADC conversion and to attach this to a GPIO pin interrupt. I’d try that out first to see if this meets your requirements in terms of latency and...

Yeah. Of course there is all of the existing stock both in people's hands, and sitting in warehouses waiting to be sold. Hopefully the SK6812's will also be all 3.3v. IIRC a Teensy can probably only drive 50-100 LEDs...

Hi again, I made the changes as I mentioned above and issued a PR: https://github.com/PaulStoffregen/USBHost_t36/pull/23 @wwatson - It would be great if you would try it out on your logitech wireless combos. I...

As I suspected, the source impedance of your Vmid is ways too high! In an application note, NXP states that for precise conversion, the source impedance seen by the ADC has to be smaller than 10kOhm. Thus, make your...

Here are the schematic of the preamp and wiring. Thanks a lot for offering help.

You might want to look at gamedunio3. It uses its own libraries, and not the Teensyduino libraries. I must admit to buying one, running some of the demos, and then putting it in my drawer of things to get back to. ...

Here's a few more that are currently in the queue to appear on the website blog. http://little-scale.blogspot.com/2018/12/teensy-36-as-standalone-mediator.html ...

Heard of this one just a few days ago. No idea if or when they'll sell any. https://github.com/PatternAgents/TheVoid

Please show the preamp schematic and your wiring diagram. The Teensy ADCs are switching delta-sigma converters, which means that the input impedance varies during a conversion cycle and thus, source impedance and slew...

Does it also solve the problem when used in portable mode?

Hi , I just played with Granular effect in audio lib on t3.5 native dacs output... then I needed to pause playSdRaw when granular freeze, and after red lot of toppic I succeed to corrupt the playsdRaw lib (I guess will...

This solves the problem - everything now loads correctly with no errors Thank you

But I can tell you those SetupDiBlahBlahBlah functions work on all versions of Windows, at least as far back as Windows 2000. They're also very difficult to use and the finer details can vary quite a bit between...

I won't be able to help you with the high power requirements but I can off a few tidbits of advice from being a longtime forum reader and having built a few smaller Addressable RGB LED projects. Eventually the "big...

Thank you so much! This is going to cut my code down by at least 35%! Jacob.Schultz, I tip my hat to you, sir!

Maybe SetupDiEnumDeviceInterfaces & SetupDiGetInterfaceDeviceDetail & SetupDiGetDeviceRegistryProperty? Just a blind guess, since I don't have the USBDeview source code, nor have I ever even used that program. In...

No, and I'm not planning to mess with the test fixtures we use, at least not anytime soon. This sort of update is pretty much at the bottom of my priority list right now.

WorldSemi recently announced all new WS2812 will be compatible with 3.3V signals. So yes, in the future they will all work with every Teensy and the many other boards on the market using 3.3V. Almost nothing uses 5V...

https://forum.pjrc.com/threads/52761-Teensy-4-0-(hypothetical)-pin-assignments?p=186490&viewfull=1#post186490

Ok, I believe I see what's causing the NullPointerException. Here's an attempt to fix it. To install this, extract the ZIP file to get pde.jar. Then copy it to the "lib" folder inside Arduino, replacing the pde.jar...

Ha ha! Sorry, late to the party. I'm fine with the LED. The 5V thing, is it the chip on the teensy that allows this? Or is it hardware you put with the chip? And the big question.. Will this new machine be able to...

As you can see the colors are way off so I tried to get the blue in the corners. The red light test worked really good. What if I identify the primary and secondary colors separately in a table. Think that would...

It should be like this And please note the square brackets i have added, sorry i forgot that. AudioEffectEnvelope *myEnvelope = { &envelope1, &envelope2, &envelope3, &envelope4 };

I see now that serialEvent is part of standard Arduino, not just Teensyduino. Here's the Arduino documentation for serialEvent().

@Koromix - All is well with TyCommander and Teensy including the latest TDuino 1.45 release and IDE 1.88. It seems your code picks up the HID Serial # passing in USB header that was put in back a version or two. The...

What is the larger context? What do you want to do in the interrupt handler? Locate "serialEvent" in the Teensyduino source code. You'll find it in...

Yes, the interrupt is IRQ_USBOTG.

Just tried arduino's standard installer (non-portable) followed by the teensyduino installer. Although the gui now worked, the same error messages turned up. Error messages screenshot: Full error messages:...

I have a PJRC K66 Beta board for T_3.6 that has no programmed serial # that returns the -1 value. I put this code in and indeed it works … except during reset, which includes after upload when the bootloader seems to...

Nevermind this nonsense. .. Sounds like usb ID issue.

It is possible you are 'flooding' your usb channel with garbage midi from your foot controller. Many naive coltrollers have no smoothing (filtering, hysteresis, ...) and so pump nearly identical CC messages as fast as...

Did you try a non-portable installation with Arduino’s standard installer?

Get rid of XP! Microsoft stopped supporting it many years ago and people using it still nowadays put themselves and others to risk because of the many not patched security problems.

Hi all, Teensy Device name detection is running fine under WINDOWS 10 but not under XP and VISUAL C++6 it always replies : Périphérique Audio USB in the device name provided by : lpmidiincaps.szPname I tried to...

That is fundamentally different from the scene feature. While handling thru notes with remapping isn't all that taxing for a Teensy, storing and handling the mapping data is another programming task you'll have to...