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  1. Need some assistance here.... I'm building a...

    Need some assistance here....

    I'm building a CNC drill press to automatically position a table under the drill bit so I can drill PCB's automatically and accurately. I have 3 steppers X-Y-Z. All...
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    Teensy 4.0 and ILI9341_t3 libs

    Will the ILI9341_t3 libraries work with the new Teensy 4.0? I've not ordered my 4.0 yet, but I'm doing some pre-planning for it's arrival.
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    Spook: I'll have to commend you once again!. This...

    Spook: I'll have to commend you once again!. This font editor totally rocks! I downloaded a free "seven segment" ttf font and used it to create a 120 point font for my 2.8" tft. Since i only need...
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    While my requests are small, here goes--please...

    While my requests are small, here goes--please continue to keep this class of units small (non T3.6 foot print)

    1. 100% of my projects utilize a DIP socket for teensy replacement so i'd like to...
  5. great job on these games!

    great job on these games!
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    PS, i also write a slider lib for the LI9341_t3....

    PS, i also write a slider lib for the LI9341_t3.

    https://www.youtube.com/watch?v=HE2Y7moK56A
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    I've used the Adafruit_hx8357 libs as well, but...

    I've used the Adafruit_hx8357 libs as well, but the ILI9341_t3 just feels faster, I never did tests though. Agree the adafruit is pricey and i'm looking for bigger displays (4" is a goal). I've seen...
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    Not sure if this will work on a t4, but works on...

    Not sure if this will work on a t4, but works on a teensy 3.2
    // in globals declaration section
    #define CPU_RESTART_ADDR (uint32_t *)0xE000ED0C
    #define CPU_RESTART_VAL 0x5FA0004
    #define...
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    Im not sure what screen you have, but I use a...

    Im not sure what screen you have, but I use a teensy 3.2 and Adafruit 3.5" which are 480 x 320. Oddly I use the ILI9341_t3 libs (not sure if the will work with T4) and the libs work fine, I have full...
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    I just tried that, nothing useful is reported,...

    I just tried that, nothing useful is reported, only what's being compiled.
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    Description of compile options

    Does anyone have a description and suggested usage for the optimize options, such as:

    Fast, Faster, Fastest
    LTO
    Pure Code
    Debug
    Smallest code

    etc.
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    I seriously doubt you fried your display. Send...

    I seriously doubt you fried your display. Send info on you pin connection and code.

    the link shows an UNO that pumps out 5 volts, the display in the link may not be 5 volt tolerant. I use the...
  13. Add sliders to your touch screen projects -- free library

    If you use touch screens (ILI9341_t3), maybe this slider library will add some flare to your GUI.

    Library at: https://github.com/KrisKasprzak/ILI9341_t3_controls

    Short vid on usage:...
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    Yep, that's my graphing function. I think...

    Yep, that's my graphing function. I think supporting other displays is relatively easy. Just as long as the lib leverages Adafruit_GFX, only the display data type in the object creation needs to be...
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    Need help writing a library

    All,

    I have a neat graphing function that plots stuff like temperatures or voltages over time. The problem is a big ugly function and is hard to update to draw say 2 variables. I can re-code it...
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    not a fan of these units, but just passing along...

    not a fan of these units, but just passing along

    https://www.youtube.com/watch?v=o8Ever-0tss&list=PLPHBVy6vaT418gVRVzMcq00Ip49w0zeW_&index=2
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    that looks like the same ones I use. drawing...

    that looks like the same ones I use. drawing buttons is more dependent on the library and not the display. The library used is ili9341_t3. optimized for the teensy and supports Adafruit_GFX...
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    The 3D printer I use is a makerbot we have at...

    The 3D printer I use is a makerbot we have at work. There are several online printing services that are very affordable. The software I use is Solid Edge and you can get a free download (student...
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    I use the heck out of the 2.4" and 2.8" inch...

    I use the heck out of the 2.4" and 2.8" inch TFT's (ILI9341) and HX8357 (3.5 inch units). I use all aspects such as graphics, SD usage and touch. I wish there were larger more affordable units. I use...
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    I use the heck out of these units....

    I use the heck out of these units. http://www.ebyte.com/en/product-class.aspx?cid=1&pid=1

    I find them low power, great range, and reliable. The company has a wide variety of types. I use the UART...
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    What are you looking at transmitting? Data from...

    What are you looking at transmitting? Data from one Teensy to another? I have a pretty reliable setup that sends data using some LoRa units.
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    I use a Teensy 3.2 and I use dual SDI devices all...

    I use a Teensy 3.2 and I use dual SDI devices all the time 1) an ILI9341 display and 2) and SD card. Both are on the same SPI lines but different CS of course. Works fine in my data logging...
  23. yep setting the teensy3clock was it, it now works...

    yep setting the teensy3clock was it, it now works like a million bucks.




    setTime(rHour, rMinute, rSecond, rDay, rMonth, rYear);
    Teensy3Clock.set(now());
  24. OK the plot thickens...while I eagerly wait for...

    OK the plot thickens...while I eagerly wait for some assistance in manually programming the RTC and saving the setting, I ran a sketch to program the date/time based on the serial data from the...
  25. Can't get RTC to save time and remember on power up

    All,

    I have a Teensy 3.2 with a soldered crystal and when powered via usb it seems to store and display correct time.

    I have a 3 volt batter + connected to the VBAT and ground connected to GND...
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    looks reasonable. not sure how you calculated R3...

    looks reasonable. not sure how you calculated R3 R4 and CS. The chosen values may filter out fast pulse counts. I've got a similar application where my sensor can't ready above ~2300 pules per min...
  27. ahh...i've yet to figure out how to do a layered...

    ahh...i've yet to figure out how to do a layered board in my garage. Single is easy but very limiting.
  28. any desire in printing your own board?

    any desire in printing your own board?
  29. Great, thanks for putting this together. It looks...

    Great, thanks for putting this together. It looks well documented.
  30. @tonton81. can you ellaborate on "cranking" can...

    @tonton81. can you ellaborate on "cranking" can reset MCU? I have a data logger in an electric go kart and use a simple buck converter to power a Teensy 3.2 It works well, but every once in a while...
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    Welcome to the club. I too switched from Arduino...

    Welcome to the club. I too switched from Arduino to Teensy and have been wildly happy with that move
    1. better product
    2. better help from the Forum (and friendlier)

    I have found nearly 100%...
  32. PS the PCB image is my version 3.0 but the boards...

    PS the PCB image is my version 3.0 but the boards shown are a previous incarnation and don't match exactly
  33. https://www.4pcb.com/free-pcb-layout-software/?gcl...

    https://www.4pcb.com/free-pcb-layout-software/?gclid=Cj0KCQjw2IrmBRCJARIsAJZDdxAEyUDNbdrkcwcBdW2COMqUK1QScqQj6wlCqV03ElmoyRKE5A13BpwaAldREALw_wcB
  34. The software I use is PCB artist and is a free...

    The software I use is PCB artist and is a free download. I built my own libraries for displays, Teensy 3.2, buck converters, and several other components so creating new designs is simplified. In my...
  35. I'm now printing my own PCB boards and using...

    I'm now printing my own PCB boards and using sockets to mount my Teensy 3.2. Designing and printing PCB's is actually very easy to do. On medium complex projects I can generally design / etch / drill...
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    well done.

    well done.
  37. What version of Windows are you using and do you...

    What version of Windows are you using and do you have any virus checking software running?
    I have Win7 and McCafe. I can rarely upload code to my Teensy 3.2 unless I disable real-time scanning.
    ...
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    Thanks to all, We're using a Teensy 3.2....

    Thanks to all,

    We're using a Teensy 3.2. defragster--will look at that code tonight. All my time var are volatile unsigned longs . I've been looking for a direct access to the chips timer as it...
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    JWScotSat, thanks for chiming in. Our v1.0...

    JWScotSat, thanks for chiming in.

    Our v1.0 used your approach, the issue was that speed resolution based on our wheel diameter is 3.31 MPH (too low for our needs)--this is with a 1 second update...
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    very cool!

    very cool!
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    Issue with micros() in an ISR

    All,

    I have a data logger that is being used to measure wheel RPM (0 to about 500 RPM) in and electric go cart. I'm using an infrared sensor and for the most part it works very well. When the...
  42. Unfortunately i'm using every one of the 8 wires...

    Unfortunately i'm using every one of the 8 wires in CAT5 for display and a few buttons--I sure could use some more conductors.
  43. update from my data logging saga... based on...

    update from my data logging saga...

    based on tips from above (thanks randomvibe) , i'm now able to send data to my display (2.4 inch TFT) reliably. Recall my data logger is in a small electric...
  44. @linarism, Thanks for the tips. I'm having...

    @linarism,

    Thanks for the tips. I'm having severe write issues with my data logging system. I'm writing around 126 characters every second to an 8GB sandisk card. I'm using good old fashion SD.h...
  45. Regarding the displays I generally connect the...

    Regarding the displays I generally connect the backlight pin to a digital pin, that way I can turn the display on/off or even write PWM to the pin to control brightness--my favorite is to use the...
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    What speed are you compiling your code to run?...

    What speed are you compiling your code to run? I've used the SD card boards (with level shifters) and if compiled above 72 MHZ, the SD card could not be recognized. At 72 MHZ, the card reader worked...
  47. looks like i got it working ino file...

    looks like i got it working

    ino file
    Transceiver.GetTheData(&TheData, sizeof(TheData));


    .h file
    void GetTheData(const void *TheStructure, uint16_t size_);

    .cpp file
  48. All, I could really use some more complete...

    All,

    I could really use some more complete help here, a line of code may help an experienced c programmer but it's making me more confused. I'm not a c programmer and have no idea how to implement...
  49. Thanks Jarkkol, I implemented and got the code to...

    Thanks Jarkkol, I implemented and got the code to compile, but it doesn't work. I can pass in a data structure but the reported sizeof is 2 bytes. I'm told that the size of “void *” is the size of a...
  50. Help writing a library (passing in an unknown structure for serial writing)

    All,

    I've been using small UART based transcievers (E50-TTL-100) with great success. I can read / write and even program them. RadioHead library will work with and E32, but I want different...
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