What is it?

A tiny, richly-featured Air Data Computer (ADC) for small unmanned airplanes. Includes an MS5611 barometric pressure sensor for 10cm-resolution altitude, a Honeywell RSC-series differential pressure transducer for extremely accurate airspeed, and a thermistor interface with high-resolution convertor for air temperature measurement with less than 1 degree precision. All of this interfaces to your autopilot via robust UAVCAN interface - no sketchy I2C wiring! Comes fully assembled, ready to use!

What makes it special?

• High-resolution, temperature-compensated airspeed sensor - low-range models are accurate to fractions of a knot!
• Sealed barometer case with port for plumbing to proper static source
• Onboard heaters keep barometer in accurate sensing range, even when it's below freezing outside!
• True air temperature measurement via included OAT probe
• Onboard computer calculates air density and true airspeed
• Robust UAVCAN interface is compatible with most Pixhawks and similar autopilots and makes it safe to install this out in a wing or wherever is convenient!
• Update firmware via CAN interface

Why did you make it?

Existing solutions for airspeed measurement on Pixhawks are lacking - they're only a simple pressure transducer, usually with poorly-chosen range, giving airspeed at unacceptable resolution. They usually connect via I2C, which is a board-level interface - it should never be used for long-distance communications. Further, the barometers in most autopilots are simply mounted to the board with no way to plumb a static pressure source, so you're measuring the pressure of the inside of your fuselage, not true static pressure!

Specifications

• Weight: XX grams
• Size: XX x XX x XX
• Power: 4.0V to 5.5V, XXmA

Required Accessories

• JST-GH Interconnect Cable for connection to Pixhawk 2.1, Pixhawk 4, etc
• JST-GH CAN Terminator (connects to the last device on the CAN bus)