This is a closer look at what can the steerign wheel display used by Ferrari, McLaren, Mercedes, Sauber and Toro Rosso.
Display Module
PCU-8D
The PCU-8D is a lightweight driver display module designed for general motorsport applications. It is designed to connect to a host ECU via CAN and present the driver with information on a 4.3” display and LED lamps. The display is suitable for use in direct sunlight and at night. The text and graphics layout of the screen is user-configurable via PC software. 100 pages are available, and are selectable by CAN message.
Application
● Data display and warning lamps
● Typically installed within the steering wheel, although can also be remotely mounted
Display
● 4.3” backlit LCD display
● Viewable area 95mm x 54mm, 480 x 272 pixel resolution
● Viewable in direct sunlight. Brightness adjustable via CAN message for low-light conditions
● 16 Gauge types for displaying data, including bar tacho, rev lights and variable text
● 100 user-configurable page, selectable by CAN message
● The display is fully customisable; page layout can be configured by PC with text and gauges
● Alarm pages or user-configurable text warnings can be triggered by CAN messages
Communications
● One CAN interface (1Mbps). No internal termination
● One USB interface for configuration only
Unit Inputs
● One reset input (active low with internal pull-up; can be left unconnected if not required)
● One CAN address selection analogue input (connect an external resistor to unit supply ground)
Other Features
● Configuration software tool supplied with the unit
Electrical
● Supply voltage 8V to 16V DC
● Supply current: <0.6A @ 13.8V (screen and all LEDs on)
Electro Magnetic Compatibility
● Complies with the essential protection requirements of 2004/108/EEC
Environmental
● Size: 130mm x 81mm x 22mm
● Weight: <230g
● Splash resistant to standard motorsport fluids
● Lid has a rubber seal, case fixings are sealed with silicone sealant
● Maximum humidity: 95% non-condensing
● Operating temperature: 0°C to +50°C
● Storage temperature: -25°C to +85°C
● Vibration: 100Hz to 1000Hz, all axes, 24 hours
● Vibration isolation is recommended
Connection Definition
● Un-terminated flying lead only (no connector fitted), length 300mm
● 28 AWG wire for all wires unless stated
● USB wires are contained within a cable screen, with the other wires coiled round the USB screened cables
● Note the unit supply is required when configuring. The unit cannot be powered by USB
Example Screen Layouts
● The configuration software allows each page layout to be fully customised
via McLaren Applied Technologies