A dedicated data display should reduce the time you spend searching the monitor for information. The Precision Sim Engineering DD-R combines a 5-inch touchscreen with 23 RGB LEDs, but the result depends heavily on where it is mounted, how the USB connections are routed and how SimHub is configured. This guide covers the complete installation for a clean, readable and reliable PC sim-racing setup.
DD-R specifications that affect installation
The display uses an 854 × 480 LCD running at up to 60 fps. Precision Sim Engineering specifies 16-bit colour, 350-lumen output and an anti-glare Gorilla Glass cover. The 23 individually addressable RGB LEDs are arranged as five on the left, thirteen across the top and five on the right. That layout can handle rev lights, flags, spotter warnings, fuel alerts and TC/ABS status without forcing all information onto the LCD.
The enclosure is machined from 6061-T6 aluminium and the supplied rigid bracket uses notched adjustment points. PSE lists direct compatibility with major PC force-feedback systems including Simucube, Fanatec, VRS, Asetek and SimSteering. Off-motor mounting is also possible through RAM-style solutions and 1/4-inch threaded magic arms.
Before you mount: compatibility checklist
- Platform: Windows PC. The DD-R is not compatible with PlayStation or Xbox.
- Software: SimHub controls both LCD and LEDs. Z1 Dashboard and JRT can control the LCD, but not the full LED system.
- USB: two dedicated USB connections are required. PSE states that one must connect directly to the PC motherboard; the second may use a powered USB hub.
- Mount: confirm the bracket hardware matches your wheelbase, or prepare a stable 1/4-inch/RAM-style off-motor mount.
- Sight line: the screen should sit below the main racing view without being hidden by the wheel rim.
Wheelbase mounting versus off-motor mounting
Mounting on the wheelbase
This is the most compact solution and keeps the DD-R centred as you adjust the wheel deck. Install the correct bracket hardware loosely, place the screen at its lowest practical position, sit in the cockpit and check visibility through the wheel opening. Raise it one notch at a time until the full display is visible. Tighten only after the wheel, seat and monitor are in their final positions.
Leave enough clearance for wheel removal and quick-release operation. On formula wheels with an integrated display, the DD-R may be redundant or visually crowded; with round and GT wheels it usually adds much more value.
Using a magic arm or RAM-style mount
An off-motor mount is useful when the wheelbase has no suitable bracket pattern, when a wheel display blocks the DD-R, or when you want the display beside the wheel. Use a rigid arm with a 1/4-inch thread and anchor it to a non-flexing cockpit member. Long arms amplify vibration, so keep the arm short and avoid attaching it to a monitor stand that already moves.
USB routing: the reliability step people skip
The DD-R uses two high-retention USB cables with angled connectors. Follow PSE’s connection rule: plug one USB connection directly into a rear motherboard port and connect the second either directly or through a quality powered hub. Avoid front-panel extensions for the first setup because they add another cable and connector to diagnose.
Route both cables away from the wheelbase power supply and motor cable where possible. Cross power and USB cables at roughly ninety degrees rather than running them together for a long distance. Secure cables to the cockpit frame, but leave a service loop near the display so height adjustment does not pull on the connectors.
For a motion rig, move the platform through its complete travel while powered off and confirm neither cable becomes tight. Anchor the cables on both the moving and static side; the DD-R sockets must not act as strain relief.
SimHub setup in the correct order
- Install the current SimHub release and connect the DD-R before launching a simulator.
- Confirm the LCD and LED device are detected separately. If one part is missing, test the direct motherboard connection before changing software settings.
- Install the included Daniel Newman Racing plugin, dashboards and LED profiles supplied with the DD-R.
- Load a simple dashboard first. Check frame rate, touchscreen input and scaling before adding complex overlays.
- Configure LEDs in layers: rev bar, flags, spotter, fuel and TC/ABS. Use unique colours for critical warnings instead of assigning every event to the same LEDs.
- Save a base profile, then create car-specific copies. Formula, GT, rally and road cars do not share the same useful rev range or warning priorities.
What information belongs on the screen?
A useful race page shows gear, RPM, lap delta, current lap, fuel, brake bias and the most frequently adjusted electronic settings. Avoid copying every possible telemetry channel onto one page. Small text defeats the benefit of a dedicated display.
For endurance racing, create a second page for stint time, fuel prediction, tyre data and pit information. For rally, prioritize gear, shift timing and stage delta. Use the touchscreen for page changes only where it can be operated without taking your hand far from the wheel.
LED profile recommendations
- Top thirteen LEDs: progressive rev bar with a clear shift point.
- Outer LEDs: flags, spotter and urgent warnings.
- Low fuel: a distinct steady colour, not the same flashing pattern as the rev limiter.
- TC/ABS: short pulses in separate positions so intervention is readable in peripheral vision.
- Brightness: reduce output for night racing; maximum intensity can reflect in the monitor and Gorilla Glass.
Troubleshooting common problems
The display works but the LEDs do not
Check the second USB connection, confirm the correct device is selected in SimHub and temporarily disable other LED plugins. LCD and LED functions do not use an identical software path.
The image freezes or disconnects under force feedback
Move the required connection to a rear motherboard port, test without extensions and separate USB routing from the wheelbase power cable. If a hub is used, it should be powered.
The screen is hidden by the wheel
Adjust seat and wheel position first, then raise the bracket by one notch. Do not place the display so high that it blocks braking points or the car dashboard on the main monitor.
Touch input is mapped to the wrong monitor
Use Windows tablet/touch calibration to associate the touchscreen with the DD-R display, then recheck SimHub scaling.
FAQ
Does the DD-R need two USB ports?
Yes. PSE specifies two dedicated USB inputs; one must connect directly to the PC motherboard, while the second can use a powered hub.
Can I use it without SimHub?
Z1 Dashboard and JRT can control the LCD, but full LCD and LED control is available through SimHub.
Is all mounting hardware included?
The package includes the rigid bracket and hardware for the major supported wheelbase families. A RAM mount or 1/4-inch magic arm is an alternative and may need to be purchased separately.
Is it console compatible?
No. The DD-R is a PC-only display and is not compatible with PlayStation or Xbox.
Final recommendation
Choose the DD-R when you want a robust mid-sized screen, a wide LED field and flexible mounting across different PC wheelbase ecosystems. Install it only after your driving position is final, follow the two-USB connection requirement and start with a simple SimHub profile before adding car-specific pages. View the current Precision Sim Engineering DD-R Display at Sim Race Webshop.
Technical and image reference: Precision Sim Engineering official DD-R page. Specifications and availability were checked on 5 October 2026.
Assistant AI-winkel de la boutique en ligne Sim Race