From Avionics Anonymous on Tindie:
UAVCAN Air Data Computer / Airspeed Sensor
Airspeed, Altitude and Air Temperature sensing with UAVCAN interface for Pixhawk and other autopilots
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!