[TriEmbed] thanks & Re: TFT'S from Hamfest

[Pete Soper]

Hi Trampas,

   It was great to see you subscribed to the list. Welcome!

     First, thank you for the donations of gear for Saturday's 
fundraiser. Together with the stuff I donated Nick and I raised $672 for 
two NC First Robotics teams (PyroTech and TerrorBytes) going to the 
world championship this week in Houston.

    If you want a couple of the Seeed display boards to experiment with 
I can arrange that.

-Pete


On 4/18/22 15:34, Trampas Stern via TriEmbed wrote:

    I think that pretty much sums up Arduino and Arduino libraries in
    general!

    Arduino is great to get something working quickly but Arduino
    libraries in my experience are full of bugs, err 'features'.  Hence
    If you want to create something stable it is best to use arduino
    code and libraries as educational examples.

    If there is an interest in this LCD I will order one and make up a
    sample project and tutorial.  I even have some spare Cortex M0+
    boards (ATSAMD21) I can provide to those interested, so everyone is
    using the same processor.

    Trampas




    On Mon, Apr 18, 2022 at 3:05 PM Pete Soper <pete at soper.us> wrote:


        Unfortunately, the Adafruit library doesn't  play well with this
        display. Their ILI9341 driver (and/or how their GFX library
        works with it) has changed over the years and in some subtle 
        and this has caused it to stop being compatible. So the first
        URL is useful but the second is problematic.

        -Pete

        On 4/18/22 14:58, Trampas Stern wrote:

            I think this is the Seeed one:
            https://wiki.seeedstudio.com/2.8inch_TFT_Touch_Shield_v2.0/

            It appears to use the *ILI9341 *driver chip.  The ILI9341
            chip is what you are talking to via the SPI interface to
            turn pixels on and off.   Adafruit has some examples and
            tutorials on how to use the ILI9341, note the adafruit
            lcd/board is different, but process should be similar:
            https://learn.adafruit.com/adafruit-2-8-and-3-2-color-tft-touchscreen-breakout-v2/spi-wiring-and-test


            Here is the ILI9341 datasheet:
            https://cdn-shop.adafruit.com/datasheets/ILI9341.pdf

            I have used the ILI9341 (as well as several other LCD
            controllers) on past projects, so if anyone needs some help
            I will be happy to help.   If there is enough interest I
            would not mind setting up an online(zoom) tutorial session.

            In general if anyone needs help solving hardware or firmware
            problems, please let me know and I will do my best to help.

            Thanks
            Trampas


            On Mon, Apr 18, 2022 at 2:15 PM John Wettroth via TriEmbed
            <triembed at triembed.org> wrote:


                It was the Wiki and was V2.0- brain fart on something
                else I was doing.



                https://wiki.seeedstudio.com/2.8inch_TFT_Touch_Shield_v2.0/





                All worked well for me even with the very latest Arduino
                iDE (.19)





                Regards,
                John M. Wettroth

                E: jwet at mindspring.com
                M: (919) 349-9875
                H: (984) 329-5420



                *From:* Pete Soper <pete at soper.us>
                *Sent:* Monday, April 18, 2022 2:05 PM
                *To:* jwet at mindspring.com
                *Subject:* Re: [TriEmbed] TFT'S from Hamfest



                The displays from the hamfest are V2.0 but I'm excited
                this more recent stuff is compatible. Could you point us
                to the web page(s) you found the firmware resources on?
                I've poked around the Seeed github site and don't see
                this. Or is it in their wiki?

                Pete

                On 4/18/22 13:33, John Wettroth via TriEmbed wrote:

                    TFT Touch v4.2

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