1. Introduction
This manual provides instructions for the waveshare 3.4inch HDMI Round Touch Display. This display features an 800x800 hardware resolution IPS round screen with 10-point capacitive touch. It utilizes toughened glass with up to 6H hardness and optical bonding technology for improved display effect and dust resistance. The display is compatible with various devices, including Raspberry Pi (all versions), Jetson Nano, and Mini PCs running Windows 11/10/8.1/8/7.
Video Description: An official product video showcasing the features and applications of the 3.4-inch and 4-inch HDMI Round Touch Displays, highlighting resolution, IPS panel, wide viewing angle, optical bonding, 10-point touch, and compatibility with Raspberry Pi and other systems.
2. Package Content
Verify that all items listed below are included in your package:
Image Description: An illustration showing the components included in the package. These include the 3.4inch 800x800 LCD, a silver capacitive touch pen, USB-A to USB-C cable, HDMI flat cable, USB to Type-C adapter (C), USB to Type-C adapter (B), HDMI to Micro HDMI adapter, HDMI adapter, and a screw pack.
- 1 x 3.4inch 800x800 LCD
- 1 x Silver capacitive touch pen
- 1 x USB-A to USB-C cable (~1m)
- 1 x HDMI flat cable (~1m)
- 1 x USB to Type-C adapter (C)
- 1 x USB to Type-C adapter (B)
- 1 x HDMI to Micro HDMI adapter
- 1 x HDMI adapter
- 1 x Screw pack
3. Specifications
Key technical specifications for the 3.4inch HDMI Round Touch Display:
Image Description: A visual summary of the display's features, including 3.4" size, 800x800 resolution, HDMI interface, IPS panel, 170° viewing angle, capacitive touch, 10-point touch, USB Type-C touch interface, toughened glass panel, and optical bonding technology.
| Feature | Description |
|---|---|
| Screen Size | 3.4 inches |
| Resolution | 800 × 800 pixels |
| Display Panel | IPS |
| Viewing Angle | 170° wide viewing angle |
| Touch Type | Capacitive, 10-point touch |
| Touch Panel Hardness | Up to 6H toughened glass |
| Display Technology | Optical bonding |
| Display Interface | HDMI |
| Touch Interface | USB Type-C |
| Audio Output | 3.5mm jack and 4PIN header |
| Weight | 0.8 Pounds |
4. Setup and Connection
Follow these steps to connect your display to a compatible device.
4.1 Interface Introduction
Image Description: A detailed view of the display's rear interfaces, labeled 1 to 5. These include the Backlight ON/OFF switch, HDMI Port, Type-C Power Supply port, Touch Port, and a 5V PH2.0 Power Header.
- Backlight ON/OFF: Switch to control the display backlight.
- HDMI Port: Connects to the video output of your host device.
- Type-C Power Supply: Provides power to the display.
- Touch Port: Connects to the USB port of your host device for touch functionality.
- 5V PH2.0 Power Header: Alternative power input.
4.2 Connection Examples
The display requires both an HDMI connection for video and a USB connection for touch functionality and power. Ensure your host device can provide sufficient power (e.g., 5V/3A for Raspberry Pi 4B/3B+, 5V/5A for Raspberry Pi 5, 5V/2.5A for Raspberry Pi Zero 2 W, 5V/4A for Jetson Nano).
Image Description: Three connection diagrams. The top diagram shows the display connected to a Raspberry Pi 5, indicating a 5V/5A power requirement. The middle diagram shows connection to a Raspberry Pi 4B, requiring 5V/3A. The bottom diagram illustrates connection to a Raspberry Pi 3B+, also requiring 5V/3A. All connections involve HDMI for video and USB for touch and power.
Image Description: Three additional connection diagrams. The top diagram shows the display connected to a Raspberry Pi Zero 2 W, requiring a mini HDMI adapter and USB cable, with a 5V/2.5A power supply. The middle diagram shows connection to a Jetson Nano, requiring 5V/4A. The bottom diagram illustrates connection to a Mini PC. All connections involve HDMI for video and USB for touch and power. Note: Raspberry Pi boards and hosts are not included.
- Connect the HDMI port of the display to the HDMI output of your host device (e.g., Raspberry Pi, Jetson Nano, Mini PC) using the provided HDMI cable or appropriate adapter.
- Connect the Type-C Power Supply port of the display to a suitable power source (e.g., USB port on your host device or a dedicated 5V power adapter) using the provided USB-A to USB-C cable. This connection also enables touch functionality.
- For Raspberry Pi Zero models, an additional mini HDMI adapter may be required.
- Ensure the power supply meets the requirements of your host device and the display.
5. Operating Instructions
5.1 Power On/Off
- Once connected to a powered host device, the display should automatically power on.
- Use the Backlight ON/OFF switch on the display's rear to control the backlight.
5.2 Touch Functionality
The display supports 10-point capacitive touch, offering responsive and intuitive interaction.
Image Description: A hand interacting with the display, illustrating multi-touch capability. Accompanying text highlights key features: 1. Up to 10-point touch (depending on the operating system), 2. Up to 6H hardness toughened glass panel, and 3. Optical Bonding for improved display and dustproof properties.
- Ensure the USB touch port is connected to your host device.
- The touch functionality is driver-free for most supported operating systems (Raspberry Pi OS, Ubuntu, Kali, Retropie, Windows).
- Use your fingers or the provided capacitive touch pen for interaction.
- The display supports up to 10-point touch, allowing for multi-finger gestures, depending on the operating system.
6. Device and System Support
The waveshare 3.4inch HDMI Round Touch Display offers broad compatibility:
Image Description: An illustration detailing device and system support. It shows various Raspberry Pi models (Pi 3A+, 3B, 4B, 5, CM3/3+, Pi Zero/2 W) and Jetson series boards. Text indicates support for Raspberry Pi OS, Ubuntu, Kali, WIN10 IoT, and Retropie (all driver-free for 10-point touch or single-point touch). It also supports Windows 11/10/8.1/8/7 for PCs with 10-point touch (driver-free).
- Raspberry Pi: Supports Raspberry Pi OS, Ubuntu, Kali, and Retropie. Offers 10-point touch (driver-free). Compatible with Raspberry Pi 5/4B/3B/Zero/Zero W/Zero 2W/Pico/Pico W/Pico WH.
- Jetson Nano: Supports Ubuntu with single-point touch (driver-free).
- Mini PC: Supports Windows 11/10/8.1/8/7 with 10-point touch (driver-free).
7. Maintenance
To ensure the longevity and optimal performance of your display, follow these maintenance guidelines:
- Cleaning: Use a soft, lint-free cloth to gently wipe the screen. For stubborn smudges, slightly dampen the cloth with water or a screen-safe cleaner. Avoid harsh chemicals, abrasive materials, or excessive moisture.
- Handling: Handle the display by its edges. Avoid applying excessive pressure to the screen surface.
- Storage: When not in use, store the display in a cool, dry place away from direct sunlight and extreme temperatures.
- Protection: The toughened glass panel offers good protection, but avoid dropping the display or exposing it to sharp objects to prevent scratches or damage.
8. Troubleshooting
If you encounter issues with your display, refer to the following common troubleshooting steps:
- No Display/Black Screen:
- Ensure the HDMI cable is securely connected to both the display and the host device.
- Verify that the display is receiving power via the Type-C port.
- Check if the host device's video output is enabled and configured correctly.
- Try a different HDMI cable or port if available.
- Ensure the backlight switch is in the ON position.
- No Touch Functionality:
- Confirm that the USB touch port is connected to a USB port on your host device.
- Restart your host device.
- For Raspberry Pi, ensure the operating system is configured to recognize the touch input. Refer to the waveshare product wiki for specific driver or configuration instructions if needed, although it is generally driver-free.
- Test with a different USB cable.
- Incorrect Display Resolution:
- Ensure your host device's operating system is set to output 800x800 resolution.
- For Raspberry Pi, you might need to modify the `config.txt` file to force the correct HDMI resolution.
- Flickering Screen:
- Check power connections to ensure stable power delivery.
- Try a different HDMI cable.
- Reduce the length of the HDMI cable if it is excessively long.
9. Application Examples
The versatile design of the 3.4inch HDMI Round Touch Display allows for integration into various projects and products:
Image Description: A collage of four images showing the display in different use cases: a smart home thermostat interface, an in-vehicle control panel, a consumer electronics device (e.g., a smart speaker with a circular display), and an industrial equipment interface.
- Smart Home: Ideal for smart thermostats, home automation control panels, or ambient information displays.
- In-vehicle Devices: Can be used as a compact dashboard display for navigation, media control, or vehicle diagnostics.
- Consumer Electronics: Suitable for custom media players, smart speakers, or unique desktop gadgets.
- Industrial Equipment: Applicable for control interfaces in compact machinery or monitoring systems.
10. Dimensions
Refer to the following diagrams for the physical dimensions of the display:
Image Description: A technical drawing providing precise measurements of the display in millimeters. It includes a front view showing a diameter of 115.00mm (87.60mm active display area), a side view showing a thickness of 17.00mm (6.00mm for the screen), and a rear view detailing the PCB layout and mounting hole positions.
11. Warranty and Support
waveshare products typically come with a standard manufacturer's warranty. For specific warranty details, return policies, or technical support, please refer to the official waveshare website or contact their customer service directly. Keep your purchase receipt for warranty claims.
- Online Resources: Visit the official waveshare website for product documentation, FAQs, and community forums.
- Customer Service: Contact waveshare support for technical assistance or warranty inquiries.
