Search results

What exactly is the configuration there? The strip which lights up now, where is it connected to?? To the second ethernet port?? Try to send data to all LEDs and check all 8 outputs. It is possible to use any pin now and to define pins. Maybe there is something strange going on now with the...

5V needs to be cut. GND has to be connected. There exist USB cables with a switch which in my experience do not work because the data lines are missing. I am using a USB hub with power switches for each port to connect Teensy devices with external power and where the trace is not cut. It stays...

It is possible that there is something wrong with the configuration of the Octo library - although I don't see anything. 10 Leds? Your strip looks longer btw the color order just changes the order ... even with the wrong order you would get the single colors - just a different one. Or: there is...

It is possible to connect the ground at the adapter, yes. In large setups, often I find it practical to have the ground connection (from Teensy/adapter to the LED power supply) at the LED strip. There is a ground on the output jack of the Octo adapter for each data line. Edit: this way it is...

If there is only one power supply which powers both the Teensy and the LEDs there is only one ground which has to be connected to all parts. In the case of powering the Teensy from another source (USB, powerbank, another power suplly) it is important that all grounds are connected. It was...

15 analog ins for the faders would be easily managable with one Teensy 4.0 and one multiplexer. Very large numbers for analog ins can become challenging regarding grounding and noise to get clean signals from faders or potentiometers. Another option could be external ADC boards. A higher number...

Have you checked the ground connections? That can also cause such problems, when the ground from the LEDs is not connected to the Teensy / Otco... ground.

Long header pins are possible, e.g.: https://www.sparkfun.com/break-away-headers-long.html 20 mm length is sufficient. I measured it. You can also connect the 8 pins + 5V + GND using wires or on a circuit board. Or design a PCB. In that case you could design the whole adapter...

You can compile the Teensy to act as a USB Keyboard on your PC and send key messages with the keys of your choice such as the CTRL keys. You can find all the details here: https://www.pjrc.com/teensy/td_keyboard.html The connection of a closing button or morse paddle is not a problem using...

Doesn't hurt to get the right cable, yes. But where do you see that the 4pin connector is missing the 5V pin? There are two GND pins in the 5 pin connector where you can omitt one. The 4pin connector should also work.

You can use a breadboard and a few jumper wires to connect the Teensy with your display and anything else you want to try out next. https://learn.sparkfun.com/tutorials/how-to-use-a-breadboard/all

From my limited understanding I would guess: That pattern on the underside acts as the capacitive touch sensor for each potentiometer / encoder. It seems that the housing of the encoders are not connected to ground or anything, right? In this handbook you can find a little bit about "Mutual...

A few more thoughts: You can get the WS2811 as single chips. These one are on the 12V LED strips, where one chip drives 3 RGB LEDs. https://www.adafruit.com/product/1378 I don't know if or how it would be possible to use them with low current LEDs. There are smaller versions than the very...

There are some types of addressable LEDs also in different sizes. Adressing all 128 LEDs via one pin is handy and very quick. Why not use, e.g., 10% of power (or even less)? That is roughly the same as the mentioned 2mA per LED. WS2812 and similiar in all it's available versions should be more...

You could try this: disconnect any USB and other connection to a computer. Use a powerbank to power the teensy. Connect headphones to the headphone output of the audioshield. Change your sketch that the microphone input is routed to the headphone output. This way you can check if the problem is...

Technically both is possible and nothing can be damaged. When the Teensy is powered it starts and then it depends what your program is doing and what connection is needed. If the program is not waiting for a serial connection to be there, and it sends serial data, that data can get lost and is...

Not sure if that sort of debouncing would help for your frequencies?

Yes, 1,8V is fine for that regulator. There exist different packages with different pin assignments. V_DDD has to be between 1.1 and 2.0V according to the datasheet. As far as I see everything looks correct. The 100k resistors at the line in an out are not on the audio board - you probably are...

You could add something like that to your if-statement to detect a new pulse only after your defined time window: if (.... && (micros()-lastTime > 15))

It sounds that it would not be an option to have additional buttons connected to the Teensy to trigger the macros? That would make things easier. Long ago I've worked with AutoIt. It is a script language where you can do many things under Windows. But as far as I remember you can only get...

Why do you need an alternative to AutoHotkey? What is the setup? A Windows PC with a Teensy connected via USB? It could be possible to connect the computer mouse to the Teensy via the USB host port. The Teensy can process the input and decides what exactly is passed through and what...

I remember one thread with a problem where it was solved by using another library: https://forum.pjrc.com/index.php?threads/automated-still-controller-hx711-trouble.73430 ... but it seems you are already using the library which worked there. What forces or masses are you using in your tests?

I am still trying to understand: What kind of noise are we talking of? Is the noise only present during SD-card playback? Or always? Without the class D amp, connecting the line-out of the audioshield to another amplifier, there is no noise problem?

What kind of noise do you hear? Is it noise during playack from SD card? What exactly is meant by "other setups"? Do you have another configuration where there is this noise not audible? What power source are you using? Have you tried (as a test) to use different power sources for Teensy and...

Thanks, BillFM. I was searching the reverence manual and couldn't find it there. https://www.pjrc.com/teensy/IMXRT1060RM_rev3_annotations.pdf

Maybe you could find some information here: https://forum.pjrc.com/index.php?threads/beware-t4x-rtc-power-consumption.64216/ https://forum.pjrc.com/index.php?threads/teensy-4-1-rtc-battery-life-question.75985/ ... but probably not about maximum voltage. There are threads where 3.8V is...

That sounds like an interesting project. Not sure if I understand the idea/question. The setup is: - Teensy with GPS module provides timestamp signal over USB audio - Smartphone (Android?) records video signal from integrated camera together with this audio signal from USB - via software...

To check the hardware you can use a simple sketch without any library, e.g. use the pushbutton pullup example from tutorial 3. If the pins are working you can rule out any problems with your cable connections or the Teensy hardware. From a quick look at the code I couldn't find where...

I don't know these libraries. From my understanding from a quick look the mapping of one pot is done on one analog input. Probably the library needs some adaptation to use it with a mux input where the same analog input pin is used for different potentiometers by switchting through these step by...

One thing is that the order of the pins is not completely controllable as far as I remember. If you have strips connected to ALL those pins for a test this shouldn't matter at that point. You have 10*400 = 4000 LEDs now in this definition which have all to be set to light up. This should be...

Another way would be a simple lowpass: float alpha = 0.2; // choose that you like it // frequency_new = ... map your sensor data frequency = frequency + (alpha * (frequency_new - frequency));

I understood that a gamepad = joystick device to send data to the PC is needed? Not sure how a USB serial device could work here.

I would also ask for the reason why analog signals are used. Connecting the two microcontroller via one serial interface makes it easy to communicate and send data more reliable. If only one direction is needed, only GND and TX to RX would be necessary. Not sure if I understand the application...

4ms attack and 2ms releaseNoteOn seem quite short and quick. Have you tried longer times, e.g. 20ms or so? Are you planning to make the envelope settings a parameter you can change? You could start to control it via MIDI to play around with it.

There is a note in the documentation (you can see that in the GUI designer) about an upper limit of 400Hz and besides more information a link to this thread: https://forum.pjrc.com/index.php?threads/different-range-fft-algorithm.32252/page-2

I understood your post and was reading: 1) powering the Teensy from the buck converter -> noise during SD playback 2) powering the Teensy from Laptop-USB -> no problmes with noise during SD playback which brings up the question if the buck converter (or maybe the wiring / grounding with it)...

Have you compared to a potentiometer, 10k or so (connected to ground and 3.3V, middle pin to analog in), to check if the code is fine? Then you could compare and check if the wiring of the board you are is the way it should be.

Could the noise come from the buck converter? Have you tried a 5V powerbank for the Teensy just for comparison?

About instantaneous frequency: I was working with it several years ago and only vaguely remember the details. I think in theory it works only under the assumption that you have one frequency component, i.e. one sine signal to analyse. Not sure what happens with less strictly filtered signals...

Thanks for the useful information. That can be very helpful for others. Glad you could solve it!

Not sure if this helps or is really applicable here but you could look for other ways than FFT to measure / estimate a frequency, e.g. instantaneous frequency or counting zero crossings. With certain restrains such ways can be much faster (work on short time periods) and more precise. Edit...

Great, thank you, will definitely try it all!

Yes, unison is usually (always?) the addition = mix of the same waveform with a slight detune. In some synthesizers there is also a stereo-spread with a different panorama setting for each oscillator. You can simply mix as much oscillators as you like in mixer objects. Multiply the target...

No clear idea, but I would check: - make 100% sure that the Teensy is still running as intended and this is not a software problem on the Teensy (I read your words that this is an assumption; so add a display or an LED or whatever to the Teensy) - is a Windows restart necessary or is the Teensy...

I am not aware of a simple way to build a 4 channel output USB to bluetooth sound interface. I don't see that a Teensy is really making things easier here. As I was trying to say: - You would have to find a solution to make the Teensy a 4 channel USB audio interface - connecting bluetooth...

Not sure if I understand your setup. Why exactly is bluetooth needed here? You have your controller in front of your laptop and need one stereo-output as main-output of the the audio software plus a second stereo output to listen over your headphones, right? Is it really necessary to go over...

If you have a code in Python which works for your needs than have a look at that and see what is different there? From where is all that code coming? I would have assumed that the accuracy you get from such a adxl sensor board is not sufficient to get a really precise velocity calculation...

There was a thread about some error here: https://forum.pjrc.com/index.php?threads/is-fastled-ws2812serial-broken-in-teensyduino-1-59.74548/

There is this: https://github.com/sstaub/TeensyID

Have you looked at those active 10m USB cables? Couldn't that be a simple solution? Searching the internet shows people who run USB directly over CAT5 cables without any additional circuits. So it depends how critical our setup is and how easy to change it to give that a try? Would be...