PX4 Airspeed Sensor
Where to buy
This digital differential airspeed sensor has a very low offset, a high resolution and most importantly: Does not suffer as much from the noise induced by long cables and offsets in the ratiometric output on the old analog airspeed sensors.
There is a new PX4Airspeed with compass board also available for installations when users want to move their compass our from high EMI noise sources. Board is fully plug-n-play board with Pixhawk autopilots
Correct Tube Orientation
It features a Measurement Specialties 4525DO sensor, with 1 psi measurement range (roughly up to 100 m/s or 360 km/h or 223 mp/h). Its resolution of 0.84 Pa is quite good, and delivered as 14 bit data from a 24 bit delta-sigma ADC. It also measures temperature to allow to calculate true airspeed from indicated airspeed using the MS5611 static pressure sensor on Pixhawk. As the temperature is not influenced by the heat of nearby processing components, it is much closer to the air temperature than with the previous analog sensor setup. It comes with M3 / 6-32 mounting holes. It is supported on all PX4 autopilot generation boards.
PLA or ABS Threaded Version
This version works great with a MakerBot and PLA filament.
ABS / Click Version
Only recommended for high-res ABS printers!