Latest activity

  • C
    If you were to use the OpenAudio library, you'd use this example... https://github.com/chipaudette/OpenAudio_ArduinoLibrary/blob/master/examples/LowpassFilter_FD_OA/LowpassFilter_FD_OA.ino It does a lowpass filter in the Frequency Domain. The...
  • B
    So I finally got some time over the weekend to do some testing. I can confirm that the code that MichaelMC created does indeed work. Absolutely amazing work Michael! Thanks so much for sharing - I have a very vague concept of how it is is you...
  • J
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  • J
    Something finally happened! On the Volvo heater, at 9600 baud, all FF all the time!!! At 19200, suddenly getting a 0 response at Hex 27 on every ID ordered, Every one (0 through 63). Strange readings on the scope.
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  • C
    As you're using a T4, you can use floating point operations. This means that you can use one of the floating point extensions of the Audio library, like the OpenAudio or Tympan libraries. These have options for steeper filter cutoffs, including...
  • Z
    Hello, I want to use Teensy 4.1 as a "main driver" for 8 bit ISA expansion card project. I was wondering has anyone been doing anything similar and can I get recommendations for appropriate buffer ICs for digital I/O interface? Thanks in advance
  • mjs513
    mjs513 reacted to Rezo's post in the thread Call to arms | Teensy + SDRAM = true with Like Like.
    Meanwhiles, for anyones enjoyment, here is a video of a music player demo running on LVGL v9.0.0 I think there is a lot of room left to optimize. It has two screen sized frame buffers (1.3Mb each) that LVGL writes into, and the eLCDIF reads from...
  • KurtE
    KurtE reacted to Rezo's post in the thread Call to arms | Teensy + SDRAM = true with Like Like.
    Meanwhiles, for anyones enjoyment, here is a video of a music player demo running on LVGL v9.0.0 I think there is a lot of room left to optimize. It has two screen sized frame buffers (1.3Mb each) that LVGL writes into, and the eLCDIF reads from...
  • W
    Thanks for the comments, I ordered a Teensy 4.1, so I should be good to go! I'll probably try out those mods to make it more efficient at a later stage.
  • D
    Thanks Kurt. The LED pin is conn to VIN thru a 100Ω resistor, which works fine on the smaller display. The first thing I tried was upping the resistor to 100k, but that made no difference to either display. Tried conn to 3.3V - with and without...
  • wwatson
    wwatson reacted to Rezo's post in the thread Call to arms | Teensy + SDRAM = true with Wow Wow.
    Meanwhiles, for anyones enjoyment, here is a video of a music player demo running on LVGL v9.0.0 I think there is a lot of room left to optimize. It has two screen sized frame buffers (1.3Mb each) that LVGL writes into, and the eLCDIF reads from...
  • D
    Dogbone06 reacted to Rezo's post in the thread Call to arms | Teensy + SDRAM = true with Love Love.
    Meanwhiles, for anyones enjoyment, here is a video of a music player demo running on LVGL v9.0.0 I think there is a lot of room left to optimize. It has two screen sized frame buffers (1.3Mb each) that LVGL writes into, and the eLCDIF reads from...
  • R
    Meanwhiles, for anyones enjoyment, here is a video of a music player demo running on LVGL v9.0.0 I think there is a lot of room left to optimize. It has two screen sized frame buffers (1.3Mb each) that LVGL writes into, and the eLCDIF reads from...
  • M
    The pots have ground and supply switched too I think, caps normally to ground.
  • PaulStoffregen
    PaulStoffregen replied to the thread Teensyduino 1.59 Released.
    I don't know either, but since nobody has confirmed, difficult to know if you really have found a problem or not. Since you didn't give us a program and instructions to reproduce the problem, all anyone can do is wait. Or perhaps someone could...
  • BriComp
    BriComp replied to the thread Teensyduino 1.59 Released.
    Double posting doesn't really help. It just annoys people and clogs the forum.
  • BriComp
    BriComp replied to the thread After updating IDE.
    Please post code (using </> button) and details about which Arduino IDE and what Teensy board. Without this info it's not really possible to be too helpful.
  • A
    Are you sure the caracteristics of "greeting.wav" or "greeting.mp3" : fit the player to be played correctly? Also,some mp3 players don't like too high bitrate and generate what you call "choppy, robotic and slow-sounding audio playback" if...
  • S
    I want to have a master Teensy 4.1 that is programmable in the normal way and for it to connect to 8 others (4.1 or 4.0) and for the master to be able to re-program each of the others. Is this possible and are there any examples anywhere? I've...
  • PaulStoffregen
    Also on the 2 output connectors, J6 and J5 need to have GND to OUTGND on the audio shield. Looks like their GND pins are connected only to each other but not the audio shield GND.
  • PaulS
    PaulS replied to the thread Serial Plotter / IDE / Teensy 4.0.
    I read about LDF files but couldn't find them on the web. Conveniently, someone posted them! Need to study these 2 files. Found a very useful document a while ago. Paul
  • PaulS
    PaulS replied to the thread Serial Plotter / IDE / Teensy 4.0.
    Using 2 "for" loops, makes it happen: #include "lin_bus.h" // Create an IntervalTimer object IntervalTimer myTimer; int ledState = LOW; // ledState used to set the LED unsigned long interval = 200000; // interval at which to...
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  • K
    KPollock replied to the thread Teensyduino 1.59 Released.
    Since updating Teensy to the latest version I'm having issues where Joystick.useManualSend no longer works. I don't know if others are experiencing this.
  • K
    I just updated Arduino IDE. Since this has happened my project flags Joystick.useManualSend and I can no longer get my project working. Is this a bug or am I missing something. I tried the sample codes and they also don't work with...
  • T
    Thanks very much for the help on this. TonyAme
  • PaulStoffregen
    If you're using Teensy 4.1, you would also try putting the SD card into the SD socket on Teensy 4.1. To use it, edit the code to use BUILTIN_SDCARD rather than pin 10. If using the WAV player example, uncomment these lines: // Use these with...
  • PaulStoffregen
    Test with these 4 WAV files (if you aren't already... difficult to know which files you're really using) https://www.pjrc.com/teensy/td_libs_AudioDataFiles.html
  • PaulStoffregen
    Connect the 4 pots to 3.3V, not to 5V. And connect the 4 capacitors between the signal and GND, not between signal and 5V.
  • KurtE
    How do you have the backlight hooked up? Like what they show on product page https://www.pjrc.com/store/display_ili9341_touch.htm could up the ohm of resisto. Could hook that pin to io pin and control using pwm…
  • M
    Hey AntiLoop & Paul, Thank you for your feedback. Sorry for the late reply, didn't get a chance to work on the project until this weekend. My buddy and I tried a little more debugging based on your input. Tried the guitar sample Paul...
  • T
    Hello, I am making a simple pcb for the Teensy Audio Shield 4.x Rev. D. I am using EasyEDA and a "footprint" I found for the shield. I just have a few pots and connections for audio in and out. (And also have a 5V regulated power supply). New...
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  • M
    Hello Marimoose, I had some issues too when i began learning with teensy,about the sd card wav player the monitor said the song was playing but no sound was heared,all the examples were written with the names in upper cases,then i tried with...
  • M
    As a quick test to check whether your sound output is working, please try opening File > Examples > Audio > Synthesis > Guitar. When you run this on your Teensy + Audio Shield, you should hear a guitar strumming sound. This program doesn't use...
  • J
    I am wondering about changing gears and focusing on the Status signal from ID 23(40) instead of 22(24). I found a post from another site where the user was trying to get the HVH100 Webasto (Mine are the HVH50, 50 Plus and 70) running using...
  • M
    mic-hasch replied to the thread cube 15x15x15.
    How do I get these lines to wave not surprisedFrom various attempts there are some superfluous lines that don't really interfere with the function #include <FastLED.h> #define LED_TYPE WS2811 #define COLOR_ORDER RGB #define...
  • J
    Me too! I am moving on to try an brute force every ID on send against every ID on response for something. I edited the code as set out below, but it is only doing a check of ID 1 order against ID 1 response. 1 1 FF 2 2 FF 3 3 FF vs. 1...
  • D
    I have two different TFT ILI9341 touch displays, running on a teensy 4.0 using the ILI9341_t3n library. The smaller 2.8 display runs exactly as expected and it's back lit correctly. The larger 3.2 display runs ok, but it's like the back light is...
  • PaulS
    PaulS replied to the thread Serial Plotter / IDE / Teensy 4.0.
    Yeah, that's really odd. The only differences are that the extended code creates an IntervalTimer object (that is not used anywhere) and drives the onboard LED. And on my desk the 'short' code works and shows the correct LIN bus activity? I'm...
  • J
    I know it seems odd, but I can only get a signal on the scope with my extended code: #include "lin_bus.h" // Create an IntervalTimer object IntervalTimer myTimer; int ledState = LOW; // ledState used to set the LED unsigned long...
  • J
    Thanks for all of that information Paul. The 0x18 is HEX for 24 and 0x16 is HEX for 22. I am leaving my scope on 1X because that is the only way I get a reading at the moment that matches your readings. Sounds I like I need to probe all of...
  • D
    Dogbone06 reacted to Rezo's post in the thread Call to arms | Teensy + SDRAM = true with Like Like.
    Quick general question - can the SEMC/SDRAM read data from one address (using DMA for example) and write to another address at the same time?
  • D
    I made quick note somewhere on past pages with initial speed results showing longer at faster - but not seen with current test. Another thing the 'OneScanCap.ino' occasionally shows is an added 3 seconds to all times across the tests between one...
  • D
    Dogbone06 reacted to mjs513's post in the thread Call to arms | Teensy + SDRAM = true with Like Like.
    Sorry been distracted today for a bunch of reasons. Reran the tests but added the time to copy the array DMAMEM to EXTMEM: 0 errors, 1010 microseconds to copy DMAMEM to DMAMEM: 0 errors, 319 microseconds to copy RAMMEM to RAMMEM: 0 errors...
  • G
    Paul, I've noted the failure with FastLED v3.6.0 and and 3.4.0. The working Arduino 1.8.15 / Teensyduino 1.54 combination uses FastLED 3.3.0. I've narrowed the problem down to this call in FastLED.cpp: pLed->init(); In fact, it seems any call...
  • PaulS
    I don't think WS2812Serial is broken as the sketch in this thread still runs fine (just tried). But indeed FastLED_Cylon.ino does not run now. What version FastLED library are you using? Here I'm on version 3.6.0. The version that comes with...
  • G
    Using Arduino 1.8.19 / Teensyduino 1.59 and the included example FastLED_Cylon.ino. The code never returns from the function call: LEDS.addLeds<WS2812SERIAL, DATA_PIN, RGB>(leds, NUM_LEDS); Same thing happens using Sloeber 4.3.3 +...
  • PaulS
    PaulS replied to the thread Teensy 4.1 CAN Bus Communication.
    Yes, you do. Did your code compile without errors? I just tried it and ran into compile errors. Reason is this line: serial.print(receivedMsg.buf);, that should be serial.print(receivedMsg.buf[i]);. BTW: if you want to share code, you can use...
  • Gefu
    Hello everyone, I have been reading a post thread from July 1st, 2019 labeled Best way to expand the number of Digital Outputs on Teensy 3.6 that got me wondering if the MCP23017 - i2c 16 input/output port expander that MichaelMeissner...
  • A
    hello guys i written a rocket flight controller (it has been attached here) but there are some problems happened when i changed my windows . the code was working well but when i changed my windows its stop working and the Arduino compiler keeps...
  • Pencioner
    Pencioner replied to the thread Teensy 4.1 psram memtest.
    I believe i might undestand what happens (to some extent) The code which detects PSRAM chips are switching them to SPI by issuing 0xF5 (exit QPI mode), then resets chips and uses 0x9F (read ID bytes) to detect is it is PSRAM or not, but command...
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