1. Introduction
This manual provides detailed instructions for the assembly, setup, operation, and troubleshooting of your Miuzei 4-inch IPS touchscreen display kit for Raspberry Pi 4. Please read this manual thoroughly before use to ensure proper installation and functionality.
Image 1.1: Miuzei Raspberry Pi 4 Touchscreen Display Kit components including the screen, case, fan, and accessories.
2. Safety Information
This equipment contains small parts, such as screws and nuts. Keep children under 3 years old away from these small parts to prevent choking hazards.
3. What's in the Box
Verify that all items listed below are included in your package:
- 1 x 4-inch Touch Screen
- 1 x HDMI to HDMI Converter
- 1 x Raspberry Pi 4 Case (Acrylic)
- 1 x Silent Cooling Fan
- 1 x Stylus Pen
- 4 x Radiators (Heatsinks)
- 1 x Screwdriver
- Assorted Screws and Standoffs
Image 3.1: All components included in the Miuzei Raspberry Pi 4 Touchscreen Display Kit.
4. Product Overview and Features
The Miuzei 4-inch IPS touchscreen display offers an 800x480 resolution with a wide 178° viewing angle, designed for the Raspberry Pi 4. It includes a protective case, cooling fan, and heatsinks for optimal performance.
4.1. Display Features
- Screen Size: 4-inch IPS
- Resolution: 800x480 pixels
- Viewing Angle: 178° full-angle display
- Input: HDMI signal input
- Audio: HDMI audio input, stereo 3.5mm audio output
- Touch Function: Capacitive touch (requires driver installation)
Image 4.1: The 4-inch IPS screen offers a 178° wide viewing angle for clear visibility from various positions.
4.2. Interface and Controls
The display board features several interfaces and controls:
- 3.5mm Headphone Jack: For audio output.
- HDMI: HDMI signal input interface.
- Micro USB: 5V power input. If the 13*2 Pin Socket is connected, this USB interface is not required for power.
- Backlight Button: Short press to adjust backlight brightness by 10%. Long press for 3 seconds to turn off the backlight.
- GPIO (13*2 Pin Socket): Provides power and touch return when used as a Raspberry Pi monitor.
Image 4.2: Overview of the display's ports and control button.
4.3. Cooling System
The kit includes a cooling fan and heatsinks to ensure efficient heat dissipation for your Raspberry Pi 4, maintaining stable performance.
Image 4.3: Illustration of the cooling fan and heatsinks providing better circulation and heat dissipation for the Raspberry Pi.
5. Setup Instructions
5.1. Assembly of the Case and Display
Follow these steps to assemble the acrylic case, display, and Raspberry Pi 4:
- Attach the heatsinks to the Raspberry Pi 4's CPU, RAM, Ethernet Controller, and USB Chip. Ensure proper placement and adhesion.
- Mount the Raspberry Pi 4 board onto the bottom acrylic plate using the provided screws and standoffs.
- Connect the 4-inch display to the Raspberry Pi's HDMI port using the HDMI converter.
- Carefully place the display into the top acrylic frame.
- Assemble the remaining acrylic case parts around the Raspberry Pi and display, securing them with screws and standoffs. Ensure the cooling fan is properly installed and connected to the Raspberry Pi's GPIO pins (5V and GND).
Image 5.1: Step-by-step visual guide for assembling the display and case with the Raspberry Pi.
Image 5.2: Diagram showing the correct placement of the four heatsinks on the Raspberry Pi 4's CPU, RAM, Ethernet Controller, and USB Chip.
5.2. Connecting to Raspberry Pi 4
After assembly, ensure the HDMI converter is securely connected between the display and the Raspberry Pi's HDMI port. Power can be supplied via the Micro USB port on the display or through the 13*2 Pin Socket if connected to the Raspberry Pi's GPIO.
6. Operating Instructions
6.1. Powering On/Off
Connect a 5V power supply to your Raspberry Pi. The display will power on automatically. To turn off the backlight, long press the backlight button for 3 seconds. Short press to adjust brightness.
6.2. Touch Functionality
The touch function requires specific drivers to be installed on your Raspberry Pi's operating system. The display supports touch functionality on Raspbian, Kali-Linux, Ubuntu, and Octopi. For optimal performance, it is recommended to use a pre-installed driver system image file provided by Miuzei.
Image 6.1: Operating systems that support the touch function of the display.
7. Driver Installation and Configuration
7.1. Installing the Touch Driver
Touch functionality only works on Raspberry Pi with the driver installed or using a pre-integrated image file. If you are using a standard OS installation, follow these steps:
- Install the official Raspbian system on your Raspberry Pi.
- Control your Raspberry Pi via remote software (e.g., VNC) or connect a keyboard and mouse.
- Open the Raspberry Pi terminal and enter the following commands:
sudo rm -rf LCD-show
git clone https://github.com/goodtft/LCD-show.git
chmod -R 755 LCD-show
cd LCD-show/
sudo ./MPI4008-show - If touch does not respond after installation, ensure the driver is correctly installed or use the provided image file.
Image 7.1: Detailed steps for installing the touch driver on your Raspberry Pi.
7.2. Calibrating the Touch Screen
If the touch response is inaccurate, calibration may be required:
- Install Required Software:
sudo rm -rf LCD-show
git clone https://github.com/goodtft/LCD-show.git
chmod -R 755 LCD-show
cd LCD-show/
sudo dpkg -i -B xinput-calibrator_0.7.5-1_armhf.deb - Run Calibration:
DISPLAY=:0.0 xinput_calibrator
Follow the on-screen prompts to touch the calibration points. - Save Calibration:
sudo nano /etc/X11/xorg.conf.d/99-calibration.conf
Copy the output from the calibrator into this file. - Restart System:
sudo reboot
8. Troubleshooting
8.1. Screen is Black or Blue Indicator Light Flashes
Reason: The 4-inch screen has no signal input or the system is not compatible.
Solution:
- Ensure the signal cable (HDMI) is connected properly.
- Reinstall the adapted touch drive system. Refer to Section 7.1 for driver installation.
8.2. Big Screen Not Working (Switching from 4-inch to larger monitor)
Reason: The 4-inch driver sets resolution to 800x480, which may conflict when switching to a 1920x1080 or higher resolution monitor.
Solution:
- Switch back to big screen resolution:
cd LCD-show
sudo ./LCD-hdmi
sudo reboot - Alternatively, reinstall system files to properly support the big screen.
Image 8.1: Visual guide for common troubleshooting steps.
9. Specifications
| Feature | Specification |
|---|---|
| Screen Size | 4 Inches |
| Resolution | 800 x 480 Pixels |
| Display Technology | IPS |
| Aspect Ratio | 16:9 |
| Voltage | 5 Volts |
| Item Weight | 5 ounces |
| Package Dimensions | 7.09 x 6.02 x 1.46 inches |
10. Support and Warranty
For further assistance or if you encounter other problems, you can visit the official 4-inch screen Wiki for detailed information and support:
http://geekdiywiki.com/4inchscreen
You may also contact Miuzei customer support via the email address provided in your product packaging.
Warranty information is typically included with your purchase documentation. Please refer to those materials for details regarding your product's warranty.
