G1000 MFD — Multi-Function Display
Build log for the Garmin G1000 MFD replica: bezel, engine page, map display, and X-Plane integration.
Overview
The Multi-Function Display (MFD) is the right-hand screen of the G1000 suite. It primarily shows the moving map, flight plan, terrain, weather, and engine/systems pages. In the 172SP it is a second Garmin GDU 1040.
The MFD in this build uses an identical monitor and bezel construction to the PFD.
Differences from PFD
The MFD bezel is physically identical to the PFD bezel and wired the same way, on its own ESP32-S3. Its knobs and keys send the MFD's commands, sim/GPS/g1000n3_* instead of g1000n1_*. See the PFD page for the table.
What changes is what the G1000 does with them. The MFD's softkeys pick its pages (ENGINE, MAP, …), labelled on the screen above each key. Its FMS knob, RANGE knob and pan joystick work the map and flight plan. Its NAV and COM knobs tune the same radios as the PFD's.
Engine Display Page
X-Plane 12 outputs engine data (RPM, manifold pressure, fuel flow, oil temp/pressure, EGT) through the default G1000 engine page on the MFD. No additional ESP32 outputs are needed for the engine instruments — they are driven by the simulation directly on-screen.
Status
Identical construction to PFD. Will be built in parallel once the PFD bezel is finalised. Wiring and X-Plane mapping defined (Cessna 172 G1000 Blueprint).