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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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 iFly 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 iFly 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.

  • 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.