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Type: Posts; User: KrisKasprzak

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  1. I have a nearly identical system setup in my...

    I have a nearly identical system setup in my house. A "base" monitors several "stations" for things like if my garage door is open, outside temp, etc. I use E44-TTL-100 modules. Each station has it's...
  2. If your Touch and Display SPI can get shared, I...

    If your Touch and Display SPI can get shared, I recommend this lib--always works for me
    https://github.com/PaulStoffregen/XPT2046_Touchscreen

    If your SPI can NOT be shared, this is the lib I use...
  3. problems I see 1) your chip select for the...

    problems I see

    1) your chip select for the display is the same for the touch, these need to be on different pins
    2) shared SPI buss--this may cause a problem depending on the display. I use many...
  4. @kurtE, yea...i had a heck of a time trying to...

    @kurtE, yea...i had a heck of a time trying to determine when to update, and i could only get compairing to the old value to be reliable. Saving the old val, i can check each character. My challenge...
  5. I suffer the same and write a "FlickerFreePrint"...

    I suffer the same and write a "FlickerFreePrint" library. Basically the lib only draws a filled rectangle over changed text--basically like the suggestion above. In my tests it works great.
    ...
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    you can also adjust kerning and such in the font...

    you can also adjust kerning and such in the font editor. Use the move origin and height width and offsets for that.
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    It will create 20-point only if you want multiple...

    It will create 20-point only if you want multiple you'll have to run that tool every single time
  8. I need to update my gage library--yours look like...

    I need to update my gage library--yours look like a million times better that mine!
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    That is really cool!

    That is really cool!
  10. rats..... My 2.8" TFT that works with the...

    rats.....

    My 2.8" TFT that works with the XPT2048_Touchscreen library has HR2046 written on the controller chip
    My 3.5" TFT that does not work with the XPT2048_Touchscreen library has XPT2046...
  11. I tried disconnecting my miso wire from the...

    I tried disconnecting my miso wire from the teensy to the display, still no touch capability on the 3.5". I tried adding pullups to MISO and MOSI for the touch no help.

    Any further assistance...
  12. 3.5" display using ILI9488 will not work with XPT2048_Touchscreen

    All,

    I just bought a large 3.5" display that works fine with the ILI9488_t3 library (using my Teensy 3.2). I'm trying to get it working with the XPT2048_Touchscreen library, the display works but...
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    I'm now using EasyEDA for all my projects. I just...

    I'm now using EasyEDA for all my projects. I just recently designed a few boards and found the software is fairly easy to use (easier the more I use) but the library (included and user supplied) is...
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    Interesting offering, but I for sure will stick...

    Interesting offering, but I for sure will stick with PJRC
  15. stuck writing a class that uses templates

    I'm trying to expand my flicker free print function to a class where I can pass in an unknown display object. I've used templates in the past and feel it may work

    I'm stuck trying to figure out...
  16. Paul, Your fix worked--i'm slowly starting to...

    Paul,

    Your fix worked--i'm slowly starting to understand char in C--not real easy or intuitive, I'd love to know how people wrote word processors in C.

    At any rate, I'll bet you are dying to...
  17. nope. fails to compile can someone edit the...

    nope. fails to compile

    can someone edit the code above and not provide a one-liner? snippets are not helping
  18. sorry guys I don't understand what you are saying...

    sorry guys I don't understand what you are saying I should do.

    strncpy(New, Old); fails to compile

    Can some one edit this code directly?
  19. strcpy(New, Old); fails to compile

    strcpy(New, Old); fails to compile
  20. Super Easy Christmas Eve Challenge (strcpy)

    I have a an array of strings and I want top copy to another array, but I can't get strcpy to work. No compile errors, it just wont run

    Anyone lend me a hand?



    const char *Old[10] = {"Red",...
  21. @jonr Any pointers as to what I do with that file?

    @jonr Any pointers as to what I do with that file?
  22. compile options affects snprintf()--and in a bad way

    All,

    I wrote a very helpful library that will let you print numbers but mask only the digits that have changed. My need was to update a number and not have the flicker problem with painting a box...
  23. Will this help? ...

    Will this help?

    https://www.youtube.com/watch?v=U5hOU-xxQgk


    OPPS I see this link was already posted.
  24. 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...
  28. 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...
  36. 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...
  46. 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());
  47. 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...
  48. 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...
  50. 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.
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