1. Introduction
The HUD G1 GPS Speedometer Gauge is a versatile on-board computer designed to enhance your driving experience by displaying essential vehicle information directly in your line of sight. Featuring a digital LCD, GPS precise positioning, and a compass, it is suitable for all car types, including new energy vehicles, petrol-electric hybrid vehicles, fuel vehicles, buses, and trucks.
For detailed instructions and specifications, you may also refer to the official user manual PDF: User Manual (PDF)
2. Safety Information
Warning: This product's working voltage is 5V. It is forbidden to use a voltage higher than 5V for power supply, as this may damage the device.
3. Package Contents
Ensure all the following items are present in your package:
- G1-HUD Unit
- User Manual
- Non-slip Mat
- USB Cable
Image: Product accessories including G1-HUD unit, manual, non-slip mat, and USB cable.
4. Product Overview
4.1. Display Functions
Image: HUD G1 display showing satellite icon, speed, compass, and speed unit.
- Satellite icon: After the satellite is found, the GPS light stops flashing and stays on for normal use.
- Vehicle speed display
- Compass: N (North) E (East) W (West) S (South)
- Speed unit: KM/H (kilometers) MPH (miles)
4.2. Wave Button Function
Image: Diagram of the wave button on the HUD G1, showing press in, push left, and push right actions.
- Short press in: Confirm the option after entering the setting menu.
- Long press in: Enter the setting. After adjusting, press vertically for 2 seconds to save and exit.
- Push left: Move options after entering setting.
- Long push left: Push left for 2 seconds to turn off the buzzer alarm; do it again to turn it on.
- Push right: Switch between concise mode and standard mode; move option after entering setting.
4.3. Physical Features
Image: Side and back view of the HUD G1, labeling photosensitive element, dial button, buzzer, and USB interface.
- Photosensitive element: Automatically adjusts display brightness.
- Dial button: Multi-function control for settings and navigation.
- Buzzer: Provides audible alerts for alarms.
- USB interface: For power supply.
5. Setup
5.1. Placement
The compact design of the G1 HUD allows for flexible placement on your dashboard. Common placements include:
- A-pillar placement: Positioned near the A-pillar for an unobstructed view.
- Central control placement: Placed on the central dashboard for easy visibility.
Video: Demonstrates various placements of the HUD G1 in a car, including A-pillar and central control, and shows the speed display in action.
5.2. Power Connection
The G1 HUD is powered via a USB connection. It can be connected to your car's USB port (5V) or a cigarette lighter adapter with a USB output.
- Connect the provided USB cable to the G1-HUD unit's USB interface.
- Plug the other end of the USB cable into a car USB port (5V) or a cigarette lighter adapter.
Image: Installation method showing connection to a cigarette lighter interface.
Image: Diagram illustrating USB power supply from car USB or cigarette lighter.
The device is designed for zero power consumption when the car is turned off, preventing battery drain. USB or cigarette lighter connections provide 'short power', meaning the device powers off with the car. OBD connections typically provide 'long power'.
6. Operating Instructions
6.1. Basic Operation
- Auto Power On/Off: The HUD automatically starts and shuts off with the vehicle, effectively protecting the car battery.
- Manual Switch Mode: The device retains a manual switch mode for greater control.
Image: Automatic switch functionality, turning on/off with car ignition.
6.2. Entering Setting Mode
To access the setting menu:
- Long press the wave button to enter the setting mode.
- Press the wave button right to choose the desired menu option.
- Short press the wave button to confirm your selection.
- Once you have finished adjusting settings, long press the wave button to save and exit.
6.3. Setting Menu Options
| Menu | Function Parameters | Adjustment Range | Explanation | Default Value |
|---|---|---|---|---|
| 1. | Speed | 50-150 | Adjust the parameter value when there is an error between HUD and dashboard. E.g., if the dashboard displays 100 KM/H and HUD displays 105 KM/H, adjust the parameter value to 102 (107-5). | 107 |
| 2. | Over speed alarm | 30-250 | When the vehicle speed reaches the set value, HUD will give an alarm. | 150 |
| 3. | Fatigue driving alarm | 1.0-8.0 | HUD will give a fatigue driving alarm every X hours. | 4.0 |
| 4. | Brightness adjustment | 0-11 | 0=automatic sensitivity adjustment, 1-11=manual adjustment (1=darkest, 11=brightest). | 0 |
| 5. | Speed unit | 0-1 | 0=KM/H (kilometers), 1=MPH (miles). | 0 |
| 6. | Factory reset | 0-1 | Default=0, change to 1 and long press for 3 seconds to save and exit. | 0 |
6.4. Key Features
- GPS Compass: Provides precise positioning and real-time synchronous display data. Satellite data collection is not affected by weather. Displays directions as E (East), W (West), S (South), N (North).
Image: GPS compass display showing cardinal directions.
- Auto-Sensitivity Mode: Equipped with photosensitive elements, the display brightness automatically adjusts according to external light intensity, ensuring clear visibility even in strong light.
Image: Auto-sensitivity mode showing display brightness adjustment in day and night conditions.
- Accurate Speed Display: Features a speed calibration function to match your car's dashboard display. GPS vehicle speed is authorized by satellite signal, providing high accuracy without normal adjustment.
Image: Accurate speed display with calibration function.
- GPS+Beidou Dual-Mode Chip: Utilizes a 10 Hz high refresh rate GPS + Beidou dual-mode chip, ensuring quick and delay-free vehicle speed updates.
Image: GPS+Beidou dual-mode chip illustration.
- Alarm Functions: Includes a speeding alarm and a fatigue driving reminder to improve driving safety.
Image: Icons representing speeding alarm and fatigue driving reminder.
- Other Functions: Speed, driven distance, driving direction, automatic light sensitivity, mile and kilometer switch, sound alarm switch.
Image: Icons illustrating various HUD functions like speed, distance, direction, and alarms.
7. Maintenance
To ensure the longevity and optimal performance of your G1 HUD, follow these general maintenance guidelines:
- Keep the device clean by wiping it with a soft, dry cloth.
- Avoid exposing the device to extreme temperatures or direct sunlight for prolonged periods.
- Ensure the USB cable is not damaged and is securely connected.
- Do not attempt to disassemble or repair the device yourself, as this will void the warranty.
8. Troubleshooting
If you encounter any issues with your G1 HUD, refer to the following troubleshooting steps:
8.1. The screen without any display, and no power
- Check whether the USB cable is damaged. Replace the USB cable for testing.
- Ensure the power supply voltage is not higher than 5V.
8.2. Without car Speed
- After HUD power-on, the satellite icon will flash as it searches for satellites. Drive the car to the road; the display will work after the satellite icon stops flashing and stays on.
8.3. Inaccurate Speed
- First, check if the speed unit (KM/H or MPH) is correct. Refer to the setting menu to switch the unit if needed.
- Car manufacturers usually set the dashboard speed 5-7% higher than the ECU. The international standard is based on satellite data. If your dashboard shows 100 and the device shows 105, adjust the speed parameter value to 102 in the settings (107-5).
8.4. Driving direction display error
- The direction will display normally once the vehicle speed exceeds 5 KM/H.
8.5. Speed is still displayed after the car stops
- In areas like underground parking lots, tunnels, or under overpasses, there may be unstable satellite drift due to obstruction, causing the speed to be displayed even when stationary. This is normal behavior under such conditions.
8.6. Turn off the buzzer
- Push the wave button left for 2 seconds to turn off the buzzer. Repeat the action to turn it back on.
9. Specifications
| Feature | Description |
|---|---|
| Model | G1 |
| Brand Name | MAIMEIMI |
| Size | 63.8 * 61.7mm (approx. 2.513 x 2.428 inches) |
| Wire or Wireless | Wired |
| Working Voltage | 5V |
| Display Type | 2.6 inch HD LCD |
| Technology | Nano-technology (to eliminate LCD glare) |
| GPS Chip | GPS+Beidou dual-mode chip, 10 Hz high refresh rate |
| Compatibility | Suitable for all cars (new energy, hybrid, fuel, buses, trucks) |
| Alarm Functions | Speeding alarm, Fatigue driving reminder |
Image: Product dimensions showing 63.8mm width and 61.7mm height.
Image: Various car types compatible with the G1-HUD.
10. User Tips
- Initial Satellite Acquisition: Upon first power-on or after being in an area with poor signal, the satellite icon will flash. Drive the vehicle to an open road, and the device will acquire satellite signal and function normally once the icon stops flashing.
- Power Cable Type: The G1 HUD uses a standard USB cable for power. If you received an OTG cable and require a different USB cable for your car model (e.g., Ford Ka 2007), ensure you use a compatible 5V USB power source.
- Broad Compatibility: The device is designed to be compatible with all car types, including older models like the Volkswagen Crafter 2008.
11. Warranty and Support
For warranty claims, technical support, or further assistance, please contact the seller or refer to the product's official support channels. Keep your purchase receipt as proof of purchase.