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Affordable touch screen controller to add to your next project — Parallax Forums

Affordable touch screen controller to add to your next project

Don MDon M Posts: 1,647
in General Discussion
Just got an email today showing these controllers. Very attractive price points as compared to 4D Systems displays.
http://imall.iteadstudio.com/display/nextion.html

Comments

  • altosackaltosack Posts: 132
    This looked so good that I ordered one, and then started reading about it.

    PROs: cheap color touchscreen with embedded processor that does the heavy lifting and requires only TX/RX pins. It also has a PC-based GUI creator that downloads high-level graphic elements (fonts, pics, menus, etc) to 4MB of onboard storage.

    CONs: The full specifications of the command set and the downloadable flash format do not seem to be available.

    The GUI creator only runs on Windows (which I don't use), so I can't (won't ?) evaluate that, but for me the apparent proprietariness of the whole shebang is the showstopper. Hopefully, the full docs are just not done yet, and will be forthcoming, but until that happens, I can't recommend it.
  • jmgjmg Posts: 15,144
    Interesting, but light on details & the 'What's on board' is clearly NOT the same product in all cases.

    Smallest ones look cheap, but at 4.3" I think the price has climbed to make this a better choice

    http://www.st.com/web/catalog/tools/FM116/SC959/SS1532/LN1848/PF261641#

    - 4.3" cap-touch screen for  ~$49 & just more of everything.


  • redheadedrodredheadedrod Posts: 78
    I have one of the 4.3" boards in my hands right now. Not sure how to use it yet but I have it...

    Currently listed on their site as this:
    http://imall.itead.cc/nextion-nx2432t043.html

    Overview
    Nextion is a Seamless Human Machine Interface (HMI) solution that
    provides a control and visualisation interface between a human and a
    process, machine, application or appliance. It is the best solution to
    replace the traditional LCD and LED Nixie tube.

    This solution includes hardware part - a series of TFT boards and
    software part - Nextion editor. Nextion TFT board uses only one serial
    port to do communicating. Let you get rid of the wiring trouble. We
    notice that most engineers spend much time in application development
    but get unpleasant results. In this situation, Nextion editor has mass
    components such as button, text, progress bar, slider, instrument panel
    etc. to enrich your interface design. And the drag-and-drop function
    ensures that you spend less time in programming, which will reduce your
    99% development workloads. With the help of this WYSIWYG editor, GUI
    designing is a piece of cake.

    It's easy to adapt Nextion family HMI to existing projects, you just need to provide it a UART.

    NX2432T043 is a powerful 4.3'' HMI, which is member of Nextion
    family. Features include: a 4.3" TFT 480x272 resistive touch screen
    display, 16M Flash, 2KByte RAM, 65k colors.

    Features
    • 480 x 272 Resolution
    • RGB 65K true to life colours
    • TFT Screen with integrated 4-wire Resistive Touch Panel 
    • Easy 4 pin interface to any TTL Serial Host
    • 16M Flash memory for User Application Code and Data 
    • On board micro-SD card for firmware upgrade 
    • Visual Area:95.04mm(L)×53.86mm(W) 
    • Adjustable Brightness:0~230 nit, the interval of adjustment is 1% 
    • 5V250mA power conusmption

  • redheadedrodredheadedrod Posts: 78
    Has anyone tried these yet?

    I have mine and have played around with it some. It is very simple to control.

    It appears to use memory swapping into the video memory to display changed buttons and "graphics"

    Anyhow, they have some Arduino stuff online to make use of the boards. I have one I am playing with by manually typeing into the serial port.

    Rodney
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