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Cool project! If you're looking for something a little more rugged for guitar work, take a look at the Multiverse. It's a fully programmable stompbox pedal that lets you port Teensy audio effects to a fully polished DAW-like system. However, you...

Arduino IDE now supports ZST and XZ compression. I'm considering switching from BZ2. Downside is we lose compatibility with Arduino IDE 2.0.x and maybe even 2.1.x. So the big question is, are these better compression formats worth it? XZ...

Confirm, the main reason is to prevent possible back flow of current into your PC. Or the same into whatever power supply is connected to Teensy, if that power supply is turned off while the PC gets connected. Indeed the risk in practice is...

Unfortunately this is impossible. NXP simply did not provide this capability (in the RT1062 chip). No amount of wishful thinking or crafty software can cause a wire to exist where there is none inside the chip between a GPIO pin and the ADC...

I re-read this thread but couldn't see which particular motion sensor board you have. Would be much easier to answer this sort of question if you could give a link to the product page if it's from a well-known site like Sparkfun or Adafruit. Or...

I get the same freezing using a 2 amp wall wart type psu, so im guessing its not that? also using a teensy 4.0, my start/stop foot switch still controls their LEDs when it freezes so im guessing its the neotrellis thats freezing up not the...

I see. :-( Sorry for bothering the wrong person.

Unfortunately this is impossible. NXP simply did not provide this capability (in the RT1062 chip). No amount of wishful thinking or crafty software can cause a wire to exist where there is none inside the chip between a GPIO pin and the ADC...

Thank you very much for your response. I completely understand what you write. In earlier communications on the topic I saw you writing that the stability of the reference voltage is a reason for the problems. Would it make sense to try improving...

Blind guess... can you connect a voltmeter to monitor at the power input? Perhaps with Teensy 4.1 and the LEDs and audio shield you might be running right at the limit of your power supply. Then using the SD card might be adding more power...

Hi, I'm trying to use the Audio Library for Teensy 4.1. During testing, my board stacks, and watchdog resets it. Then this is the crash report I'm getting. CrashReport: A problem occurred at (system time) 16:57:36 Code was executing from...

Hi @Leetut a quick one to try - can you make the delay in the loop a bit longer and see if that helps, I found neotrellis locks up if polled any quicker than 12ms. I used a loop of 20ms for reading the keys and let everything else run as quick...

Thanks Paul, was worth a try but that made it worse (upload, press play, press any pad, immediate freeze up) tried up to 100ms everywhere i can think of also tried using the neotrellis int pin, made no difference when i first started the...

I re-read this thread but couldn't see which particular motion sensor board you have. Would be much easier to answer this sort of question if you could give a link to the product page if it's from a well-known site like Sparkfun or Adafruit. Or...

Confirm, the main reason is to prevent possible back flow of current into your PC. Or the same into whatever power supply is connected to Teensy, if that power supply is turned off while the PC gets connected. Indeed the risk in practice is...

Do you have any specific webcam model that definitely supports bulk transfer? I'd like to buy one to have for testing. Even if odds are slim I'll manage a lot, maybe I can help in small ways with the low-level stuff if you get stuck.

Confirm, the main reason is to prevent possible back flow of current into your PC. Or the same into whatever power supply is connected to Teensy, if that power supply is turned off while the PC gets connected. Indeed the risk in practice is...

You're a godsend @TFTLCDCyg. Thank you for updating the library so quickly! I have connected the screen in parallel with a 5V supply as you suggested, but I'm getting a strange output when trying to run the hello world example. Just a grey screen...

I may be wrong, but I've always thought that the reason for cutting the trace was to protect the PC, not the teensy. I imagine some PCs might not be too happy with >5V being delivered at USB Out

I'm going to throw in my 2 cents. I have used USB power and VIN on 3.2, 3.5, 3.6, 4.0 and 4.1 without any issues for years on multiple computers and with multiple USB supplies, on board DC-DC converters and even bench supplies for VIN. I think...

My understanding is that it may cause damage to a connected device. That said, since my original post, I had done this literally tens of times and the USB port on the PC was never affected.

I'm making slow, but steady progress on adding a UVC class video driver to the USBHost library. So far, I have spent most of my time consulting books and downloads about the UVC class and slowly adding code to my driver skeleton. Today's...

A similar question: I accidentally did this. Connected USB to a teensy 4 and a 5V power supply simultaneously. The 5V supply was also supplying a display driver in parallel. Is it likely that this killed the display? The display isn't working...

I think we may need a bit more information, and a simpler example - ideally using just Arduino and Teensyduino. I'd recommend you try with Teensyduino 1.59 beta 3, because there were some definite issues with bad interactions between the SPI and...

OK, I can confirm that installing the 0.59.3 board package fixed the issue. Thank you so much h4yn0nnym0u5e! I will take the repo private for some time while I work on the project, then I will make it public again when it is finished. If anyone...

Great, THX. I checked the additions in GDSTx for the BT817-7" screen, using the 5" BT817 screen and to my surprise it works very well, even though the dimensions of the screen in theory are 800x480, internally the BT817 chip easily supports the...

Thanks a lot for your answer ! I guessed that would be kinda difficult but still wanted to try asking. FYI, the CS42448 will stop being sold from september 2024 with no replacement (see https://www.cirrus.com/products/cs42448/ and...

First to answer your "Is it possible" regarding 512 bit data frame, yes, at least in theory from reading the reference manual and datasheet specs. But as a practical matter, editing the audio library code to accomplish this requires...

If you just want to try Phazerville firmware on Teensy 4, all you need is a normal (not VOR) version of the Ornament and Crime boards... with Teensy 3.2 installed in a socket. (sadly, it seems many were built with Teensy 3.2 hard soldered). If...

Hi @Leetut a quick one to try - can you make the delay in the loop a bit longer and see if that helps, I found neotrellis locks up if polled any quicker than 12ms. I used a loop of 20ms for reading the keys and let everything else run as quick...

I ordered one from adafruit for testing and will be here friday. Its about the only sensor I don't have

Its working now without me having to change anything, the i2c_address_detect script still doesn't detect it but when I loaded up the NeoTrellis example it lit up like a christmas tree, maybe something in the sketch needs to activate it.

Thanks for the advice. I tried yesterday night your propositions, but to no avail, I am consostently getting 0 as an answer instead of 01101100, I spend the next hour and a half coding a crude 4 channel oscilloscope on my Uno and the serial...

From the 817/8 data sheet - "BT817/8 supports Horizontal Scanout Filter (HSF) operation. The HSF applies a high-quality filter to output pixels, correcting for LCD panels with non-square pixels (the physical size of the LCD pixel is not square)...

Hello, I've seen that the TDM objects in the audio library handle 16 channels at 16bit, so 256 bits TDM (TMD256). I would like to have 16x32bit channels(all outputs or all inputs) on 1 TDM object, so 512bits TDM (TDM512). Is it possible to make...

@Turby: The BT817 chip in 7" screens corrects the problem of non-square pixels. This is the timmimg table, left: 7", right: 5" GDSTx updated! #define SizeEVE 74 Share us some pictures of your TFT (by the way: my next BT817!, yeah!)

Tim: For reference, my USB MIDI keyboard sends MODWHEEL & PITCHBEND MIDI messages anytime those controls are moved, independent of whether any keys are pressed or not. Your plan for monitoring for changes & sending appropriate MIDI messages for...

Wordz is hard. Got the board, got the cable, got the beautiful pin out card. I am absolutely not asking about low-level details Gaia forbid. I was used to that 'other board' where I had to connect a USB host board to RX/TX. I've only started...

Great thanks. I did buy that cable along with the Teensy so I just need to do a teensy bit of research to double check where the connections to the board go. Mr. Stoffregen has provided that page below. I'm using VSCode so I had to turn the .ino...

Totally awesome response, Mark. I get what you're saying, and so clearly. Thanks. I was almost ready to order a couple of standard linear 10k pots. I'll give this a go later today. I'm assuming that in actual use, I'll need to keep track of the...

If you are using the 7" screen from Riverdi, you may have found that the pixels are not square. on the BT817, you can set horizontal resolution to 1076 to get things nice and square again, only really noticeable if you draw circles... #define...

It's good to know that you chose this type of screen, you really went to the top of this type of TFT's: 7" is really quite a challenge. The BT817 chip should work without problems, it seems to me that the times between the 5" BT817 with which I...

😃Nice, didn’t know you were an opAmp nurd too!

Several times I've considered making an ADC shield. Might still do it. Recently have been playing with a relatively cheap (~$4) single channel 16 bit ADC chip and a 8:1 mux, both controlled with FlexIO. Input setting time is a difficult...

Every Teensy comes with a pinout reference card that shows which pins. I'm guessing you already have that? Or you can see it on the Teensy 4.1 page and find a link to download the PDF. If you're looking for more detailed documentation, this...

Hello tonton81, I am using your great library, but I miss a function to read a specifc mailbox. I'm using dedicated mailboxes, just receiving one single Can-Message/Identifier per Mailbox. I want to read out that specific content of the...

Sure, here's a quick attempt

When talking of what can versus can not be done, it's important to keep in mind whether the limit is the hardware capability or only the artificial limits imposed by the MPU. If you configure the MPU differently, the hardware can indeed execute...

Micros returns a 32bit result. It overflows every 2^32 µs which is every 4.295E9 µs (=4295s = 71.6min). To prolong this you can store the value in the lower 32 bits of a 64bit variable. Then look periodically (at least once every 71min) if the...