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FAQ

Compatible Raspberry Pi Models

Currently, the 3.5-inch display is only compatible with Raspberry Pi 4 and Raspberry Pi 5. For Raspberry Pi 3B, 3B+, and Zero 2W, it is not recommended to use them with the 3.5-inch display, as installing the touchscreen driver may cause it to malfunction.

Can this screen work on Ubuntu, Kali Linux, or RetroPie?

Yes, but only with specific OS versions. If you install an unsupported version, the screen may not work after installing the driver.

Supported systems:

Why does my screen stay black or white after powering on?

Can I use the 3.5’’ IPS screen together with an HDMI monitor?

No. After installing the 3.5’’ IPS screen driver, it is recommended to disconnect the HDMI monitor.

If the HDMI monitor remains connected, it may show a black screen or no display output.

Restore Display to HDMI

  1. If you only installed the 3.5’’ display driver and did not make other changes to the config.txt file, you can run the following command to restore:

    cd LCD-show
sudo ./system_restore.sh

    After restoration, the 3.5’’ display will no longer work and the driver will need to be reinstalled. This method applies when your system is relatively clean or freshly set up.

  2. If you have also modified the config.txt file, the safest method is to manually edit it:

    • Run the following command to open the config.txt file:

      sudo nano /boot/config.txt

    • Scroll to the bottom and comment out the changes added by the 3.5’’ display driver:

      [all]
hdmi_force_hotplug=1
dtparam=i2c_arm=on
dtparam=spi=on
enable_uart=1
dtoverlay=mhs35ips:rotate=90
hdmi_group=2
hdmi_mode=1
hdmi_mode=87
hdmi_cvt 480 320 60 6 0 0 0
hdmi_drive=2

    • Press Ctrl+X, then Y, and Enter to save the file and exit.

    • Then reboot the Raspberry Pi. The HDMI display will work again.

    • If you want to restore the 3.5’’ display, simply uncomment the lines above.

What if I get git not found or network errors during installation?

Make sure your Raspberry Pi is connected to the internet.

If Git is not installed, run:

  • sudo apt update

  • sudo apt install git

Then retry the installation.

Why is the screen orientation incorrect?

You can fix the screen and touch orientation by running:

  • cd LCD-show/ (adjust the path depending on your OS)

  • sudo ./rotate.sh 90

Replace 90 with 0, 180, or 270 as needed.

Why does the fan keep spinning? Can it be controlled by software?

The fan header provides constant 5V power and does not support software control. The fan will always spin when connected.

What is the operating temperature range?

The supported operating temperature is -20Β°C to 60Β°C. Avoid exceeding this range to prevent damage or reduced lifespan.

Remote Access Issues

  • ssh: Could not resolve hostname …

    • Check that the hostname is correct.

    • If it still fails, use the Raspberry Pi’s IP address instead of <hostname>.local.

  • The term β€˜ssh’ is not recognized… (Windows)

  • Permission denied (publickey,password)

    • Make sure you are using the correct username and password configured in Raspberry Pi Imager.

  • Connection refused

    • Wait 1–2 minutes after powering on.

    • Confirm that SSH is enabled in Raspberry Pi Imager.