KI 300-style attitude indicator

An electronic attitude indicator in the attitude's hole: attitude over the whole screen, airspeed and altitude tapes, the vertical speed, the slip ball, the flight director and an altitude bug. One knob sets the baro and, pushed, walks its modes as the real one's; it aligns at power-up and runs on its battery when the aircraft's power goes off.

Modeled on: BendixKing KI 300-style electronic attitude indicator (AeroFlight)
Category: Displays
Size: 1 cell
Version: 1.0 · 2026-10-19
Plan: Pro
Simulators: MSFS 2020 · MSFS 2024 · X-Plane 11 · X-Plane 12

Features

Attitude over the whole screen: pitch marks every 2.5° (numbered at 10° and 20°), the roll scale (10, 20, 30, 45, 60) and its pointer, the yellow chevron and side bars, the magenta flight director chevron, the slip ball along the bottom
Airspeed tape at the left with its colored strip and a drum for the last digit; its outline yellow in the caution range, red past Vne; dashes under 30 kt
Altitude tape at the right (numbers every 500 ft), the last two digits by 20 on a drum, hatched below 10,000 ft; the vertical speed bar and value; the baro in cyan at the bottom right
Altitude bug in cyan with its value at the top (a reference only, as on the real unit)
Knob pushed: BRIGHTNESS (AUTO or 10 to 100 %), ALIGN?, the altitude bug when on; a mode goes back after 10 s; held 3 s the bug on, 5 s POWERING OFF
Power-up: the version and the battery, then ALIGNING; on its battery without the aircraft power, shut down on the ground after 30 s
No simulator counterpart: the altitude bug, the brightness, the alignment, the battery
Dark square unit for a 3 1/8" hole, BARO and PUSH / BRT by the knob; the plate plain where the maker prints its logo

Your aircraft: The airspeed tape's colored strip (white flaps, green, yellow, red past Vne) and its caution colors come from the profile's V-speeds.

On the iPad

Drag the knob up or down to set the baro
Tap the knob for its next mode (brightness, align, the altitude bug); drag to change the value shown
Hold the knob 3 s to turn the altitude bug on, 5 s to power off (tap to stop it)

Keys and controllers

Map any of these to a key, a game controller's button or axis, or a MIDI knob (how):

Baro +
Baro -
Baro sync

Simulator data

What the Hub reads from the simulator for this instrument, and what the instrument sends back. Names are the simulators' own: MSFS SimVars and events, X-Plane datarefs and commands.

Reads

Value	MSFS	X-Plane
Pitch attitude, + nose up (deg)	`ATTITUDE INDICATOR PITCH DEGREES (degrees)`	`sim/flightmodel/position/theta`
Bank angle, + right wing down (deg)	`ATTITUDE INDICATOR BANK DEGREES (degrees)`	`sim/flightmodel/position/phi`
Slip/skid ball position, -1..1	`TURN COORDINATOR BALL (position)`	`sim/cockpit2/gauges/indicators/slip_deg`
Indicated airspeed (kt)	`AIRSPEED INDICATED (knots)`	`sim/cockpit2/gauges/indicators/airspeed_kts_pilot`
Indicated altitude (ft)	`INDICATED ALTITUDE (feet)`	`sim/cockpit2/gauges/indicators/altitude_ft_pilot`
Vertical speed (fpm)	`VERTICAL SPEED (feet per minute)`	`sim/cockpit2/gauges/indicators/vvi_fpm_pilot`
Altimeter setting (inHg)	`KOHLSMAN SETTING HG (inHg)`	`sim/cockpit2/gauges/actuators/barometer_setting_in_hg_pilot`
Flight director on (1/0) (bool)	`AUTOPILOT FLIGHT DIRECTOR ACTIVE (bool)`	`sim/cockpit2/autopilot/flight_director_mode`
Flight director pitch command (deg)	`AUTOPILOT FLIGHT DIRECTOR PITCH (degrees)`	`sim/cockpit2/autopilot/flight_director_pitch_deg`
Flight director bank command (deg)	`AUTOPILOT FLIGHT DIRECTOR BANK (degrees)`	`sim/cockpit2/autopilot/flight_director_roll_deg`
On the ground (1/0) (bool)	`SIM ON GROUND (bool)`	`sim/flightmodel/failures/onground_any`