this might be the obvious answer you weren't looking for but as a user i'd ideally want to have both options. there are valid use cases for both, and for example a lot of commercial VST audio plugins also offer several...
Yet another new day :D
I have been playing with the MTP stuff, with partitions... And pulling out a fair percentage of the few hairs I have left :D
I have hacked my way through to try to support N USB drives...
check your transceiver's operating mode as well as per datasheet. 2 pins are involved. EN should be tied HIGH and S should be tied LOW
also you should be using the /3 chip model for Teensy, not the /E
Hi Team.
I was looking for some tips on how to avoid the resonace created when an microphone comes to close with its speaker, and if someone has some tools or maybe a solution on how to address this?
what happens...
Yes, use pins 0 and 1. 0 (rx) to Tx on transceiver, and 1 (tx) to Rx on transceiver.
fifo example not work, but if print mailboxStatus() show:
Transceiver is powered by 5V, like as datasheet.
Again hard to know what is going on without details about the display and your wiring and...
Is it this one: http://www.lcdwiki.com/2.8inch_SPI_Module_ILI9341_SKU:MSP2807
Which is another ILI9341 display?
Again...
Bumping this again. @Paul
Any chance of getting his update permanently added to the Teensy's platform.txt? It's seems it should be low risk, shouldn't break anything and bring it up to date with the the platform.txt...
what pins are you using on teensy? CAN2 uses pins 0 and 1, also confirm first with the fifo interrupt example, it works as is just change the bus to CAN2 in constructor, if that still doesn't work, try to print...
Place in a metal box with ferrite toroid on the USB cable?
A different T4 with audioshield and HX8357D TFT attached:
I think that one was programmed for 150MHz
@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?)
My DAB Radio 2...
Spectrum from my SSA3021X using small B-field probe 1cm above T4.0:
background level from same probe:
These are 0 -- 2.1GHz range, with T4 running at 600MHz clock.
Good morning guys
I have been trying all morning to make a simple CAN communication but there is no way (I have read several threads about it in this forum)
I write this code:
But no send / receive...
Hi Guys,
Has anyone had any experience in getting this to work in any way, or pointers of how to go about it.
I have success so far in making it hard fault :)
Cheers
Andy
Twin 8MB PSRAM chips is the most that can be accessed to date on the T_4.1.
What version of TeensyDuino is in use?
The current Beta 7 version of TeensyDuino 1.54 has changed the code behind SD.h and it run at...
Some problems with the SD card.
I first purchased Teens 4.1 from you and tried to work with it. Deep respect for authors. That's great. In a short time, I solved the problem of creating a datalogger for an underground...
I first purchased Teens 4.1 from you and tried to work with it. Deep respect for authors. That's great. In a short time, I solved the problem of creating a datalogger for an underground radar. There is a large stream on...
I have the freedom to use any of your (or other) MCU, but am a teensy fanboy and was wondering if a 3.2 or 4 would reach a 5 Mhz sample rate on one ADC?
Down the line I will need four concurrent ADCs, but can always...
Like most details of the audio library, it's documented in the design tool.
If you click any of these 3 outputs in the left column, their documentation appears in the right side column. Scroll down to "Hardware"...
I've updated the Serial.rts() documentation on the website to mention this Windows bug, with a link to this thread.
https://www.pjrc.com/teensy/td_serial.html
Quick followup to this old thread, 1.47-beta7 adds more detailed printing of memory usage. It does most but not all of the things discussed here.
This is the source code:...
Just updated the library. It now supports:
mySPI.swapPins() --> swaps MISO with MOSI, so you can connect teensies together directly pin-to-pin:
13 13
12 12
11 11
10 10
Ken at protosupplies.com 24+pin+header has some normal and more expensive great quality low profile versions in 24 pin lengths.
Some of us used the recommended low profile ones and I needed more - Ken ordered a...
Hi team, I recently bought a Teensy 4.1 and I am having a hard time running an MSP2807 (V1.2) display; I think the issue is because of the frequency in which the T4.1 "talks" with the MSP2807. I have already tried what...
Well there are two ways for testing it on the pc side. Windows has a joystick/gampad tool which shows you the joysticks it can detect and then you you can test for the sticks buttons etc...
On the linux side every...
Hey that is an interesting idea. We could setup the library to also be an SPI bus sniffer. The T4.x is capable of swapping the MISO/MOSI pins so you can log & sniff data going to and from the SPI devices. The outgoing...
As a spy? just don't hookup the return line so it wont try to send anything to it, it should be able to print out what it sees on the spi bus with the callback disabled
Switched over to the FastLED library, everything is working simultaneously now. Slight glitching on the LED's when I activate the sound but its barely noticeable. Don't need to use SPI transaction lines, seems that both...
You really need to look into the Teensy 4.x MCU datasheets, check this thread Post #4 by PaulStoffregen it has a lot of information: Port and toggle question T4
Hello all,
I own an Euroshield mounting a Teensy 3.2 that works with Audio libraries. I am fairly new to Teensy programming and I need some help on a very basic task that apparently I can't figure out.
I would...
Hi all,
I'm working on a project which needs a microphone input. For prototyping, the tiny electret condenser that's recommended for Teensy worked fine, but now I need something with higher audio quality, better...
I'm not sure those are the parts I found by stepping through the DigiKey search process, but I'm strongly biased toward them. It was DigiKey that made it possible for me to start a small board production facility early...
Just a quick update for anyone who might find this thread down the line. I've switched to UART now and, with a baud rate of 9600, everything seems to work ok. Faster baud rates can cause similar issues to what I was...
So far this one looks like it does not want to give up it's secrets!
That is it is not giving any clue by device class, subclass nor protocol. 0s for the device and 0xff for interface.
So probably vendor specific. ...
OLD POST UPDATE: Looking to use this simple code to test something else for ability to restart ...
Using this web page the results can be confirmed: numberempire.com/3590089
For that value 3590089 - it confirms...
Well, its there but you have to know about it.
If you go to the pinout card, you will see pins 14/15 being documented as S/PDIF out/in.
If you go into the audio design tool (https://www.pjrc.com/teensy/gui/) and...
Found this that might be of interest going further: https://www.linuxtv.org/wiki/index.php/RealTek_RTL2832U#Device_info. Interesting so I put it here so I don't loose the link
I've updated the 6 main product pages to have the word "analogWriteFrequency" (in the Digital Pins > PWM section) link directly to the part of the PWM page about controlling the frequency and which pins are associated...
Agreed! The idea of 50mil headers makes me cringe! It also defeats the idea behind these boards: A convenient and rapid way to prototype using breadboards.
I'm also in agreement about the RF noise these will begin...
So I ran a few more tests and I've boiled it down to 2 issues:
1)I'm using the Adafruit_DotStar library which in it's current form does not play well with SPI Transactions. I dug through the source code and came...
The purpose here is to improve compatibility with code designed using Arduino Uno & Mega, even if we can't get to the bottom of what really went wrong with JaredReabow's system.
I do not believe adding a...
As noted in post#3 by Paul - it works here - using T_4.1 and a known good cable.
Not ever seen such a thing here, other than using the while(!Serial) in some fashion needed before the fist output will show - and...
@MarkT
I'd be interested to know how (and try) to do it. DMA? Certainly I can see a processor based frame buffer, but just writing a 256x(say)80 screen region pixel by pixel with 16 bit pixels and SPI speed seems...
On a related note, what are people's views on CPU demands versus performance with these filters? Currently the simplified model version uses between 6-7% at 4x oversampling. I think I can get a 4x oversampling version...
I much prefer standard 2.54mm/0.1" mounting. 0.050" headers, especially female headers, are more difficult to come by and more expensive. And the only way you can mount them is with a printed circuit board. Other...
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 - Turns on or off...
Hello guys,
Thank you for all these considerations and sorry for the delay. We moved on other points of the project and don't work full time on it.
@mlu
Yes we thought about that but MIDI feedback is sometimes a...
What about 0.050 pins with a pin out where every other pin gives you a Teensy 4.0 pin out and the pins between bring out extra signals? Cut off the even pins and the 0.050 device goes in a breadboard. OK, throw...
Hi Frank,
Not sure the second one has HID or not...
But again maybe try plugging it into T3.6 or T4.x with one of the USBHost_t36 examples like I mentioned.
And at about line 62 in USBHost_t36.h uncomment the...
For those of you who are interested in this sort of thing, here is a comparison of the current filter based on Huovilainen's simplified model with his full model. Input is a very low level 70Hz saw, and both models are...
WOW!!!
That's absolutely awesome! Exactly what I need! Very many thanks for pointing me to this! I searched around quite a bit and can't believe I didn't stumble across this during my searches! Absolutely...
Hope was that the post #6 code would be a starting point to show the switches working. It is just a Bounce2 example modified as noted for two buttons.
If that works to reliably read the two buttons and print FWD,...
A better solution instead of TimerOne would be to use analogWriteFrequency. The Teensy 3.2 allows up to 3 different frequencies (FTM0,1,2).
You could use pins 3 and 5, for example, as follows:
...
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! (a little...
Regarding the teensy 0.1" header which is so fantastic for breadboarding stuff, but to go faster maybe denser is needed. Maybe make a teensy with 0.50" posts, and sell adapter board for 0.1" header to make bread...
I think I did measure the performance of the various FFT types a while back on the T4, though I guess it matters more
on slower chips - I only have T4.0 and T3.2 at the moment to play with.
The theoretical number of...
Thanks very much! This is exactly what I needed. S/PDIF and toslink is working perfectly for me now over pin 14.
Per your advice, changing my code to the following did the trick.
AudioOutputSPDIF3 ...
Hello all, first time posting here. I have received a lot of good info here reading past posts. Now, I'm confused...
I am trying to build an old-time floppy disk controller for aligning drives, starting with eight...
Well I guess you just have to assume they are the same, or close enough, and apply the equations anyway - the
test circuit is ratiometric so the absolute resistance isn't important.
Thank you MichaleMeissner for the write up. Atm I think I will stick to my current way to doing CharliePlexing... might be kicking myself down the road but I can see a finished project by doing it this way.
However...
i made change in the code when I was able to get others values but can t remember what did I changed... I m lost with these piezo :-)
maybe my piezo are not the good ones?
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).
As I'm one of the people Paul is most likely referring to.
What you see on a scope is broadband noise. However, if you look to a spectrogram you can see tonal that are not easily seen on broad band time series. Sure,...
Thanks for the responses. Paul I did the same test you did with two exceptions. I bypassed the line in and line out series capacitors and fed in a very clean DC signal into the ADC and measured the DAC DC output signal....
Short answer is that i2c_t3 doesn’t work with teensy 4.0 or 4.1 you will have to switch to just using standard Wire library. But I don’t think wire supports wire.stautus
