RYAVAvionics Built by pilots.

Avionics for the airplane you built.

RYAV designs experimental avionics for non-certified aircraft: flight instruments, engine monitoring and autopilot hardware. The flagship, AlphaONE, is open source.

See the products
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The film

RYAV in thirty seconds.

Products

Each product is at a different stage. The label on every one says which.

1. AlphaONERYAV
In development

AlphaONE

One box for flight instruments, engine data, traffic and navigation, with an iPad as the display.

  • AHRS on its own microcontroller, with two IMUs and automatic switchover if one fails
  • Pitot and static inputs for airspeed, altitude and vertical speed
  • ADS-B In from open-source Stratux code, plus GPS and flight logging
  • Works with Adventure Pilot’s-IFLYEFB for course guidance and controls Garmin radios and a Garmin transponder
  • External three-hour backup battery pack, and open source throughout
AP ROL HDG ALT 270° 5,500 ft APHDGNAVALTVSIASLVL HDG ALT PITCH
2. Autopilot control headRYAV
Planned for AlphaONE Rev 2

Autopilot control head

An autopilot computer in a panel-mounted head, linked to AlphaONE over CAN.

  • Keys and a display for mode selection, modeled on a Garmin-style mode controller
  • A pitch wheel, a heading knob and a separate altitude knob, so each target has its own control
  • Planned modes: level, heading, track, navigation, altitude, vertical speed and airspeed
  • Clutched servo built for flaperon control
  • The stick disconnect switch cuts clutch power in hardware, with no software in the path
RYAV EMS-4 Operator's Manual cover: a red Kitfox in flight above the engine monitoring unit, wiring harnesses, panel display, buttons and warning lightRYAV EMS-4 engine monitoring unit with a DD-50 thermocouple connector, a DB-25 engine sensor and power connector, and a USB-C service port
3. EMS-4N596JW
V1.0, operator's manual Rev A

EMS-4 engine monitor

Engine monitoring configured for the Rotax 912 ULS.

  • 20×4 character display on an ATmega2560 main board
  • Sends GRT EIS-format data to an iLevil 3 AW over RS-232
  • Demonstrator aircraft: N596JW, a Kitfox with a Rotax 582
978 MHz
4. UAT transmitterRYAV
In design

978 MHz UAT transmitter

A broadcast-only ADS-B Out unit that works alongside AlphaONE.

  • Transmits only; ADS-B In stays in AlphaONE
  • A separate unit, so it can be registered with the FCC on its own
  • FCC registration is planned
RYAV Avionics iPad app on the Flight screen, with the engine strip, attitude indicator, traffic scope and Adventure Pilot’s-IFLYEFB guidance Flight Traffic Engine Radios Logs Setup
5. iPad appRYAV
In development

RYAV Avionics for iPad

The display for AlphaONE, with six screens: Flight, Traffic, Engine, Radios, Logs and Setup.

  • Native SwiftUI app, iPad only
  • Radios and transponder across the top, engine strip on the left
  • Live data fails over from AlphaONE to a Stratux to the iPad's own sensors

Shop

Three collections, from RYAV gear to custom gifts.

All Occasions Etsy shop is live now, details below!

  • RYAV black trucker hat with the mountain logo1. HatRYAV
  • RYAV black hoodie with a topographic pattern2. HoodieRYAV
  • RYAV black YETI cup with a topographic pattern3. YETI cupRYAV
  • RYAV black YETI multi-can holder4. YETI can holderRYAV
  • RYAV black golf shorts with a topographic pattern5. Golf shortsRYAV
  • RYAV black poly wind breaker6. Wind breakerRYAV
  • RYAV aviation seatbelt key chain7. Seatbelt key chainRYAV
  • 596JW VFR Collection black cap with a red chart pattern and gold mountain1. HatN596JW
  • 596JW VFR Collection black and red sectional-chart hoodie2. HoodieN596JW
  • 596JW VFR Collection insulated cup with a laser-etched chart design3. YETI cupN596JW
  • 596JW VFR Collection YETI multi-can holder4. YETI can holderN596JW
  • 596JW VFR Collection golf shorts with a red chart pattern5. Golf shortsN596JW
  • 596JW VFR Collection windbreaker with a gold zipper6. Wind breakerN596JW
  • 596JW VFR Collection gold seatbelt key chain7. Seatbelt key chainN596JW
  • Christmas gift wrap with sleds, red trucks, lanterns and gingerbread, shown on wrapped boxes1. Gift wrap
  • Sherpa blanket printed with small colorful airplanes2. Blankets
  • Christmas pillow with deer in Santa hats, bass and fishing hooks3. Pillows
  • Navy sweatshirt printed Festive AF (And Freezing) with a Santa holding a Texas mug4. Sweatshirts
  • White V-neck T-shirt printed Another fine day ruined by adulthood5. T-shirts
  • Western Christmas crew socks with Santa hats, cowboy boots and cactus6. Socks

Blankets, pillows, sweatshirts, t-shirts, socks and gift wrap, often in Western, Christmas, airplane or Texas themes.

Visit the Etsy shop

N596JW

Demonstrator

Same sky. Different story.

N596JW is the Kitfox that carries the EMS-4 engine monitor, with a Rotax 582 up front.