ESP32 Display Update History

ElecrowElecrow
edited December 2024 in Elecrow HMI Display

Here we record the changes to the esp32 displays

📕Sept 2024

The latest version of the 3.5-inch screen is version 2.2. The touch drive IC is different.

Version 2.0

TFT_MISO is pin 12;

Touch_CS is pin 33.


Version 2.2:

TFT_MISO is pin 33;

Touch_CS is pin 12.

Therefore, the corresponding pin numbers need to be modified in the code, and the TFT_eSPI library also needs to be modified accordingly.

📕June 2024

The latest version of the 5-inch and 7-inch screens is version 3.0, which adds the chip PCA9557 to increase timing control. Therefore, you need to add the PCA9557 library to make the touch work properly.

image.png

Video: https://www.youtube.com/watch?v=E3NAmstft_8&list=PLwh4PlcPx2GcKJ17Z_xcAxQoh-Tmms_X1&index=3

Code: https://github.com/Elecrow-RD/CrowPanel-ESP32-Display-Course-File/tree/main/CrowPanel_ESP32_Tutorial/Code

①Add the PCA9557 library:

#include <PCA9557.h>

②Define the PCA9557 object:

PCA9557 Out;

③Control with RESET and EN to meet the timing requirements:

Wire.begin(19, 20);
Out.reset();
Out.setMode(IO_OUTPUT); //Set to output mode
Out.setState(IO0, IO_LOW);
Out.setState(IO1, IO_LOW);
delay(20);
Out.setState(IO0, IO_HIGH);
delay(100);
Out.setMode(IO1, IO_INPUT);

📕March 2024

Because "SmartView" has been registered by others, we now officially name the HMI series CrowPanel

📙February 2024

1.Product Name change to SmartView Display

2.Hardware changes:

  • Silkscreen: 1. From "Wizee ESP32" to "ESP32 Display-xinch"; 2.From "WZxxx" to "DISxxx"
  • All sizes of screens have added battery charging circuits. Connect the battery to the BAT interface and you can charge the battery through the USB-C interface.
  • There is no need to manually press the boot button to enter the burning mode for all screen sizes. After you click download in the compiler, the board will automatically enter the burn-in mode.
  • After the program download is completed, the program can be automatically run.
  • For 3.5-inch display, the chip is changed from ESP32-WROOM-32-N4 to ESP32-WROVER-B, PSRAM is changes to 8MB
  • For 5.0, 7.0-inch display, there's I2C port added
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Comments

  • kohli18kohli18

    To use the latest screen versions, ensure you update the pin configurations in your code and modify the TFT_eSPI library for the 3.5-inch screen. For the 5-inch/7-inch (v3.0), add the PCA9557 library for proper functionality.

  • LyantLyant

    For the 3.5-inch display, what is the best way to determine if I have version 2.0 or 2.2 without disassembling it?

  • JennieJennie

    @Lyant said:
    For the 3.5-inch display, what is the best way to determine if I have version 2.0 or 2.2 without disassembling it?

    Dear Lyant,
    Hope you are doing well. Thank you for the support to us.

    We've received your messages. Our technical support team is currently looking into the issue in your messages. Please be patient, and we will get back to you as soon as possible.

    Sorry for the inconvenience caused.

    Thanks!

    Warm regards,

  • JennieJennie
    edited September 2025

    @Lyant said:
    For the 3.5-inch display, what is the best way to determine if I have version 2.0 or 2.2 without disassembling it?

    Dear Lyant,
    May I ask which product are you using ? is it the product in the link 1 or link 2?
    link 1 ：
    https://www.elecrow.com/esp32-display-3-5-inch-hmi-display-spi-tft-lcd-touch-screen.html
    **
    link 2:
    **https://www.elecrow.com/crowpanel-advance-3-5-hmi-esp32-ai-display-480x320-artificial-intelligent-ips-touch-screen.html
    Thanks!

    Warm regards,

  • NickNick

    Is there a chance of a hardware update in 2026 to fix the screen flickering and audio volume issues?

    • Screen flickering issue discussion topic name: SPIFFS & CrowPanel ESP32 HMI 7.0-inch Display and Screen flickering during operation with flash memory
    • Audio volume issue discussion topic name: Is there a hardware or software way to further increase the speaker output

    P.S. I'm providing the topic names because I can't include links in my comments (they don't allow access to publish the comment).

  • JennieJennie

    @Nick said:
    Is there a chance of a hardware update in 2026 to fix the screen flickering and audio volume issues?

    • Screen flickering issue discussion topic name: SPIFFS & CrowPanel ESP32 HMI 7.0-inch Display and Screen flickering during operation with flash memory
    • Audio volume issue discussion topic name: Is there a hardware or software way to further increase the speaker output

    P.S. I'm providing the topic names because I can't include links in my comments (they don't allow access to publish the comment).

    Dear, Nick,
    Sorry, We cannot find the discussion topic after searching.
    Could you just write a new post to raise your questions? then I can easily find them and then help you solve it.
    Thanks,
    Best regards,

  • NickNick

    Sorry, I didn't understand what new post I should create. My main question was about a potential hardware upgrade, specifically the 5-inch display DIS07050H model, and I think this question is in the right thread.
    The topics names I provided specifically address existing issues in version V3.0 for the DIS07050H model.

  • JennieJennie

    @Nick said:
    Sorry, I didn't understand what new post I should create. My main question was about a potential hardware upgrade, specifically the 5-inch display DIS07050H model, and I think this question is in the right thread.
    The topics names I provided specifically address existing issues in version V3.0 for the DIS07050H model.

    Dear, Nick,
    Sorry, I couldn't find your question in my last search.

    Alternatively, please send the specific details of your problem to our technical support email address：techsupport3@elecrow.com

    Thanks!
    Best regards,

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