The Dashfreaks RX-7 FD3S Odometer Multigauge is a modern digital upgrade for custom clusters and cockpit conversions. Designed for Mazda RX-7 FD3S projects, it combines several key driving values in one compact display.
Speed is calculated from a pulse signal and displayed smoothly in real time. The unit also tracks total mileage and trip distance, with persistent storage for odometer data and user settings. Through the integrated web configuration page, you can adjust speed calibration, display color, boost sensor settings, units and firmware updates without additional software.
In addition to the speedometer and odometer screens, the display includes a G-meter and a boost pressure display with live chart view. Operation is handled with a single button, allowing quick switching between screens and access to functions such as trip reset, km/h to mph switching and WiFi configuration.
Key Features
- Designed for Mazda RX-7 FD3S custom gauge cluster projects
- 1.9″ ST7789 color LCD with 170 x 320 px resolution
- Digital speed display
- Total odometer and trip meter
- Switchable between km/h and mph
- Integrated G-meter for longitudinal and lateral acceleration
- Peak G-value display
- Boost pressure display with bar graph
- Live boost pressure chart
- Supports bar, kPa and PSI
- Built-in WiFi access point for configuration
- OTA firmware update via web interface
- Adjustable display text color
- Persistent storage for odometer, trip meter and settings
- PWM-controlled LCD backlight
Button Functions
- Short press: switch between screens
- Long press on speed screen: switch between km/h and mph
- Hold for 5 seconds on speed screen: start WiFi configuration
- Long press on odometer screen: reset trip meter
- Long press on G-meter screen: reset peak G-values
- Hold for 3 seconds on G-meter screen: zero the G-sensor
- Long press on boost screen: switch between boost gauge and boost chart
WiFi Configuration
The unit can create its own WiFi access point. All important settings can be adjusted directly in the browser:
- Speed signal calibration
- Pulses per revolution
- Reference RPM at 60 km/h
- Boost sensor calibration
- Boost display unit
- Display text color
- Odometer value
- OTA firmware update
Technical Basis
- ESP32-based control unit
- LVGL user interface
- ST7789 TFT display
- QMI8658 IMU for G-meter function
- Analog input for boost pressure sensor
- Pulse input for speed signal
- Non-volatile storage for mileage and settings
Note
Odometer adjustment must only be carried out in accordance with applicable laws, for example when replacing, repairing or converting an instrument cluster. The displayed mileage must match the actual vehicle mileage.
Installation Options
This product is available with two installation options:
Professional Installation Service Recommended
For the best result, we recommend booking the Dashfreaks installation service. The unit will be installed professionally and integrated cleanly into your RX-7 FD3S cluster. This is the recommended option, especially if you want a finished, tested and ready-to-use solution.
DIY Installation
The product can also be ordered as a DIY version for experienced users. DIY installation requires careful handling of the instrument cluster and electronic components.
Required tools for DIY installation:
- Fine-tip soldering iron
- Screwdrivers
- Basic soldering skills
- Careful handling of electronic components
Please note: DIY installation is carried out at your own risk. Dashfreaks accepts no liability for damage caused during self-installation, including damage to the display, electronics, wiring, instrument cluster or vehicle components.
Video demonstration:
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