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  1. I saw the suggestion to put: asm...

    I saw the suggestion to put:

    asm volatile("dsb");

    at the bottom of the ISR, is dsb case sensitive?

    I've been using the following w/o volatile:

    asm("DSB");
  2. Wow, this is has to be one of the most creative...

    Wow, this is has to be one of the most creative exhibits I've ever seen.
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    Love it, nice job!

    Love it, nice job!
  4. @frankB. You are my hero! Thanks for converting...

    @frankB. You are my hero! Thanks for converting these fonts. I'm sure to make use of them.
  5. Thanks for the reply. If anyone must use the...

    Thanks for the reply.

    If anyone must use the Adafruit_ILI9431 display driver (and say an ESP32), I have created a specific library for that driver.
    ...
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    You will have to re-enter the distance from the...

    You will have to re-enter the distance from the new blade to the fence. This data entry can be done during power up or in the tools menu.

    This is with the assumption that the configuration of your...
  7. FREE Menu Library for ILI9341 Displays

    If you have ever used a TFT display and don't / can't enable touch capability, you may have needed a menu system to let users set calibration settings, parameters, colors or other "Tools | Options"...
  8. I had similar challenges with sending data...

    I had similar challenges with sending data between 2 different MCU's via serial (wirelessly but still on a serial bus). I have an application where a teensy 3.2 sends data to an Arduino NANO and...
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    silly question, but when the display is connected...

    silly question, but when the display is connected to the headers, are they any pin to pin shorts? Reason I ask is that one of my projects had a RJ45 connector for the display port and during...
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    Get the latest library and look at the SliderD...

    Get the latest library and look at the SliderD object. There is an example for it's usage. You can slide the handle around the ring either by your finger or code. the init lets you set center...
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    Something like this? 26956

    Something like this?

    26956
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    I love this project. Full marks.

    I love this project. Full marks.
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    Motorized table saw fence

    All,

    If you are dividing your time between building cool Teensy-based projects and woodworking, I'm guessing you have a table saw. Ever wanted to build a motorized fence controller? I just did. A...
  14. not sure why the strange behavior, but a few...

    not sure why the strange behavior, but a few things jump out at me

    1) is gelenData an array or data struct? if so you sure about the .read? I use serial devices and send structs and it's...
  15. Thread: Jaws-fx

    by KrisKasprzak
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    Very impressive. I love all the images showing...

    Very impressive. I love all the images showing off your work.
  16. Does anyone have Wave2Sketch.exe? the link is 404...

    Does anyone have Wave2Sketch.exe? the link is 404 on the PJRC site.

    I'm in the mood to experiment with storing sound definition in a .h file and playing through my Teensy 3.2 and audio board.
    ...
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    UhClem, thanks for bringing this to my attention....

    UhClem, thanks for bringing this to my attention. It looks like the control input voltage min is 2.4 and suitable for a direct connection to a Teensy. I didn't see a range for control frequency but...
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    From your schematic I'm not sure the 10K will...

    From your schematic I'm not sure the 10K will pull the main MOSFET low fast enough to get the MOSFET fully off.

    I would defiantly breadboard this up first. I've spend some time trying to get a...
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    Welcome home. I too had issues with...

    Welcome home.

    I too had issues with Arduino--ram was the killer. I moved to Teensy several years and and never looked back. Other things I find useful

    1. ability to set the pwm frequency
    2....
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    Are you using the 2.8" TFT that is shown on that...

    Are you using the 2.8" TFT that is shown on that page? If so, the connection is and SPI and the same for a Teensy 3.2 and 4.0.

    display Teensy
    Vcc to 3v3
    GND to GND
    CS to pin 10
    RESET to...
  21. Why are the caps needed? I would expect the...

    Why are the caps needed? I would expect the output go through a resistor and to the LED
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    Maybe this will help... You can create a new...

    Maybe this will help...

    You can create a new ILI9341 font but replace a current character with the degree symbol, then display. This vid shows how to create your own fonts...
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    yea, good question.

    yea, good question.
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    Maybe your solderless breadboard is different...

    Maybe your solderless breadboard is different from mine, but your MOSFET is all on the same bus pins. Gate is shorted to drain and source. the RGB pins are each on a different buss.

    If your board...
  25. From what's posted on the JJRC website, the...

    From what's posted on the JJRC website, the Teensy 3.2 can run about 1.25 million interrupts per second.

    I think you have a few issues
    1) not sure why you are disabling the interrupt inside the...
  26. I'm not sure if this will help, but I was also...

    I'm not sure if this will help, but I was also looking to add extra memory to a Teensy. My goal was to mimic an SD card with an external memory chip to save data, then later dump the contents of the...
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    dang dude...Impressive work.

    dang dude...Impressive work.
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    The ILI9341_t3 library has a scroll feature ...

    The ILI9341_t3 library has a scroll feature

    void setScroll(uint16_t offset);

    I use it in a splash screen like this.

    Display.fillScreen(C_BLACK);
    Display.fillScreenVGradient(0x000E,...
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    Don't laugh, but I have that same display and I...

    Don't laugh, but I have that same display and I actually use the ILI9341_t3 driver. This driver is faster, more capable, has much better font support, etc. You should only have to reset the...
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    We maybe talking about different applications,...

    We maybe talking about different applications, for mine

    1. Teensy 3.2 measures data, sends wireless data to ESP32 (using EBYTE transceivers)
    2. ESP32 has and EBYTE and reads incoming data,...
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    I would (and I hate to say it) but and ESP32 will...

    I would (and I hate to say it) but and ESP32 will be the easiest to implement. I have a few applications, one is a home monitoring system that reads sensor data and serves a web page so I can view on...
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    I have used current sensors like this for 20 amp...

    I have used current sensors like this for 20 amp applications.

    https://www.tamuracorp.com/electronics/current_sensor/pdf/201910/L08PD15_e.pdf

    I use voltage dividers to measure 24 volts.
    ...
  33. For the record, I'm not a sales person for PJRC,...

    For the record, I'm not a sales person for PJRC, but I highly recommend dumping Arduino and moving to a Teensy (4.0 or so). Ignoring read speeds, If you want to add a display for displaying details...
  34. Bonjour! Very impressive.

    Bonjour!

    Very impressive.
  35. You shouldn’t need to do anything Different to...

    You shouldn’t need to do anything Different to get sliders to work on a second displaying. Just create a second display object and a second touch object, then pass your display object to the slider...
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    I would suggest posting photos and cable length....

    I would suggest posting photos and cable length. I'm sure this may help others.
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    That display is very similar to the ones I use....

    That display is very similar to the ones I use. Mine are 2.4" and 2.2" (mainly due to space requirements). I've not made any updates--the thing works and after a few years of fighting noise issues,...
  38. Thread: Goodbye

    by KrisKasprzak
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    My dearest FrankB, I know we’re total...

    My dearest FrankB,

    I know we’re total strangers, but I’ve had the pleasure of learning from you either on my posts or others. I understand your situation and I have similar feelings. Over the last...
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    I was doing nearly the same exact thing. My...

    I was doing nearly the same exact thing. My Teensy 3.2 was processing sensor data, talking to displays and getting data wirelessly, then sending data to and ESP8266 for web serving (as an access...
  40. Welcome to Teensy. I think you will find this...

    Welcome to Teensy. I think you will find this device much better than anything Arduino has and this forum is very helpful.

    PS. 435 + 448 + 162 WS2812B 5V and 6 5050 12V strips? I'm dying to see a...
  41. that really looks like the lib (or something) is...

    that really looks like the lib (or something) is flipping the height and width. Good question from the mighty KurtE...what lib are you using? I wonder if you reversed the height and width in the .h...
  42. I just saw this post--I rarely look at posts in...

    I just saw this post--I rarely look at posts in the technical support section.

    Big question is 1) do you need to just communicate wirelessly or 2) must you have some wifi capability (creating web...
  43. Are you using the SD card reader on the back of...

    Are you using the SD card reader on the back of the display? Is there anything connected to the SD SPI pins?

    My tests results

    Display Results
    2.8 #1 Works fine (Display & SD & touch)
    2.8...
  44. I'll test this setup tomorrow.

    I'll test this setup tomorrow.
  45. I'm not sure if what I'm trying to do will help,...

    I'm not sure if what I'm trying to do will help, but an update. One of my projects is helping a high school build a data logger for a race car. Sometimes the sd card skips a beat--I'm guessing from...
  46. OK, i tried and failed... I have a chip and...

    OK, i tried and failed... I have a chip and connected it to my Teensy 4.0 using SPI wiring and chip select =10.

    I'm using a chip: ESP-PSRAM64H, with this data sheet....
  47. If you have a really old version (or any...

    If you have a really old version (or any version). just click the icon in the upper left and select Move, then click and drag the dialog. You may have to mouse down for a second before moving.
  48. marcopolo303, I just came across this post :) ...

    marcopolo303, I just came across this post :)

    Hello, my fellow Greenpower mentor. I'm a Greenpower coach here in the US--maybe you have heard of Patriot Racing from Bob Jones High School. As you...
  49. Can a APS6404L be connected to Teensy 4.0 SPI and store data?

    All,

    Before I begin this experiment, is it even possible to use the APS6404L (or any other SRAM chip) as data storage device for a Teensy 3.2 or Teensy 4.0? I see it can be soldered to a 4.1, but...
  50. OK, got my SD cards working, seems these lines...

    OK, got my SD cards working, seems these lines are needed

    #define SPI_SPEED SD_SCK_MHZ(4)
    IsSD = sd.begin(CS, SPI_SPEED);


    ...maybe my cards are slow?
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