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Type: Posts; User: KrisKasprzak

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  1. Teensy 3.2 + ESP-01 and using AJAX to update a page--stuck

    OK gang,

    I'm close to having a Teensy 3.2 connected to a cheap ESP-01 Wifi module working where the code uses AJAX to update specific data on the web page. I actually have all this working with...
  2. I can't comment on using I2C but i have...

    I can't comment on using I2C but i have transferred data between a Teensy and Arduino via the serial port. However I did have to use EasyTransfer lib to keep my data in the structure i used to...
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    I use nearly the same display a HX8357 3.5" from...

    I use nearly the same display a HX8357 3.5" from Adafruit and currently I use the ILI9341_t3 lib--and it's works like a million bucks. As you found just need to change the display size in the .h file...
  4. Use this FlickerFree library to get smooth text printing to displays

    Add flicker free display updates to your Teensy projects using virtually any display. This free library will let you draw text and numbers using non-proportional fonts and update the data without...
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    @spook. I'm in the process of creating a YouTube...

    @spook. I'm in the process of creating a YouTube video of this font editor and some results--of course citing you as the creator. I would like to include a formal link to the download but the github...
  6. not sure how it happened, but only part of the .h...

    not sure how it happened, but only part of the .h and .cpp files uploaded. I just re-uploaded the files. Please download again.
  7. Cartesian graphing for ILI3941_t3 projects

    Add a Cartesian graph capability to your Teensy MCU projects. This library lets you plot up to 10 points and has auto screen updates when x exceeds the scale. You can also dynamically update the...
  8. "PrintScreen" and "DrawBMP" for ILI9341_t3 displays

    All,

    If you have ever wanted to capture a screen of a display and save it to and SD car, this free library will let you add useful functions like print screen and draw BMP to your Teensy projects....
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    wow, that is a piece of art.

    wow, that is a piece of art.
  10. I'm now trying this on Win7 and here's my...

    I'm now trying this on Win7

    and here's my compile error (witth Serial window up at compile time).

    Now able to open COM50 (Windows said this port was ready before it was actually...
  11. I've installed this tool following all...

    I've installed this tool following all instructions, but i really don't understand how to use this. I get a menu option USB type dual, and I get a cmd window upon upload, so I guess it's installed....
  12. I've not messed with CurtE's lib ILI9341_t3n, but...

    I've not messed with CurtE's lib ILI9341_t3n, but i believe it has a way to use DMA to get crazy fast updates. Have a look at the demosauce example that comes with the ILI9341_t3n lib. It shows very...
  13. for the needle drawing, since you always start at...

    for the needle drawing, since you always start at the same location, I think you can create an equation for the needles line (i've not studied the code but it will be something like y=mx + b. So for...
  14. Are you sure not solder got on any of the traces?...

    Are you sure not solder got on any of the traces? How did you test for shorts? A continuity meter? I've soldered a few headers (3.2 and the mighty 4.1) and all worked for me.
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    @bitbank, welcome to the family! I think you will...

    @bitbank, welcome to the family! I think you will find this community super helpful and super friendly.

    @bitbank and @kurtE I really appreciate your hard work and optimizations and admire your...
  16. dude.... well done!

    dude.... well done!
  17. I have uploaded a new PPT (fixed up some code)...

    I have uploaded a new PPT (fixed up some code) and uploaded the created .ino file.
  18. I've had one of those modules working with my...

    I've had one of those modules working with my 3.2, not sure what the issue could be, i used the adafruit libs

    #include <Adafruit_WINC1500.h>
  19. Utility to convert PowerPoint slides to ILI9341_t3 code

    All,

    If you use ILI9341_t3 libs and common screens, you may find it tedious in writing the display screens, especially if you have lots of graphical items like boxes and text.

    I find it easier...
  20. Are your lights connected in parallel? If so I'm...

    Are your lights connected in parallel? If so I'm not sure I see the issue. Can you put a current sensor to the supply for each light? I'm not familiar with that current sensor, I use ACS758's but as...
  21. All thanks for the replies. The R designation is...

    All thanks for the replies. The R designation is a great way for one to "write at will" when creating huge chars.
  22. What is the R used for in a const char definition?

    All,

    I have working code that creates a web page and displays data via AJAX. No issues but a question?

    in my we page char definition there is and R character. Anyone know what it's used for?
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    I use the CR2032 and all you need to do is solder...

    I use the CR2032 and all you need to do is solder the crystal and add some code.

    Here's the code I use

    // global location
    #include <TimeLib.h> // teensy time library...
  24. Maybe so, but I can't see to program the esp or...

    Maybe so, but I can't see to program the esp or monitor serial activity if wires are connected to Rx and Tx.
  25. OK i have a plan and a prototype is working....

    OK i have a plan and a prototype is working. Refresher as to what i'm trying to do:

    1. remote telemetry on a race car sends performance data to the pit where performance data is displayed on an...
  26. I can try hardware serial unfortunately Serial1...

    I can try hardware serial unfortunately Serial1 is for USB if i recall. I've got USB connected so i'm forced to use Sofwareserial.

    However.

    The suggestion to use easyTransfer lib works. I'm...
  27. I will try the easytransfer library tomorrow

    I will try the easytransfer library tomorrow
  28. tried this as well. #define PACKED_STRUCT ...

    tried this as well.

    #define PACKED_STRUCT struct __attribute__((packed))
    struct Test {
    uint16_t Data1;
    uint16_t Data2;
    uint16_t Data3;
    } ;

    Test MyData
  29. Well still no go... 1. i've tried every baud...

    Well still no go...

    1. i've tried every baud in the book the faster the less corrupt
    2. I did try sizeof(uint16_t) on both MCU, both returned 2 bytes
    3. I did try sizeof(MyData) on both MCU,...
  30. Yet another issue I'm struggling with sending data to ESP8266 via serial line

    Still fighting with these ESP units. I'm trying to send data from a teensy 3.2 to an ESP8266. From the teensy if I Serial3.Println("Teensy is better that ESP"); all is well. if i send a struct, data...
  31. Thanks for the reply. I've spent probably 50...

    Thanks for the reply. I've spent probably 50 hours trying to find any example that creates an access point that allows multiple clients and that can update just the data on a page using these cheap...
  32. Super stuck with ESP-01 serial module and I'm desperate for help.

    I’m trying to use my Teensy 3.2 and an ESP-01 (which is a small serial-based device) to create an access point (which I’ll call a web server) to serve a web page to various devices such as phones and...
  33. I've never used that display, but i'm looking...

    I've never used that display, but i'm looking into Nextion's. I currently use 2.8" TFT (ILI9341) and have had great success. I recently purchased a 3.5" SPI had have it working as well. But these may...
  34. How to connect > 1 client to a serverusing an Adafruit WINC1500?

    All,

    i have a WINC1500 wifi module connected to my Teensy 3.2 and using the libraries at https://github.com/arduino-libraries/WiFi101

    After adding the line in setup(), WiFi.setPins(8, 7, 4, 2);...
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    Library for EBYTE transceivers

    If you need to wirelessly communicate between different MCU's have a look at EBYTE transceivers. I've used these on several projects with great success.

    I also wrote a library to make usage and...
  36. Got it running. had to reinstall arduino and...

    Got it running. had to reinstall arduino and teensyduino.
  37. I'm pretty sure it's where libs are installed...

    I'm pretty sure it's where libs are installed running the example analogRead

    Arduino: 1.8.9 (Mac OS X), TD: 1.47, Board: "Teensy 3.2 / 3.1, Serial, 72 MHz, Faster, US English"
    ...
  38. Need help getting code to run on a mac

    All,

    i'm helping a friend get an ino file running on a mac and i'm not a mac user. here's the compile error.

    Anyone know what I need to do?



    Arduino: 1.8.9 (Mac OS X), TD: 1.47, Board:...
  39. 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...
  40. 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...
  41. 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...
  42. @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...
  43. 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
  46. 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!
  48. 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...
  49. 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...
  50. 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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