DIY Air Data Computer Asgard

By on November 12, 2017
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The air data computer Asgard is out. It is a unit designed for DIYers, size and weight are compatible (fixation tabs have the same dimensions of standards servo tabs) with low-cost RC applications.  Some aspects will be changed as per users feedback.

The ADC is an essential avionics component and you can find a reference configuration for the Asgard-ADC below:

Reference Configuration

Since it is possible to change some characteristic of the unit selecting different hardware, we propose a reference configuration. The reference configuration will have the following characteristics (complete hardware)

Overall weight:  47 grams

Overall dimensions: Without push in fittings 61x41x24 mm. With push in fittings,  81x41x24  mm. Fixing tabs dimensions are equal to those of a standard servo.

Assembly time: About 1.5 hours

Overall cost:  160 Eur (June 2017)

Power and Supply Current : Power to the ADC is supplied through a standard micro USB port, the same can be used to transfer data. Typical power source is a cell phone power bank.

Ratings: Maximum measurable IAS @ standard conditions and 2\sigma.(106.13 \pm 0.53)m/s /382.06 km/h.(33.56 \pm 1.67)m/s /120.82 km/h. Raw sensor Range (-1,+1) Psi. Sample speed 50 Hz (user selectable). 

Altitude, ISA (<4000, \infty) MSL.Raw sensor Range (0, 160000)Pa. Sample speed 50 Hz (user selectable). Uncertainty 2\sigma,  0.056m @ 50 MSL and 0.064 m @ 1000 MSL. 

Bluetooth: Present, usable with custom library to interact with an Android phone

Micro SD Card Reader: Present, micro SD Card 4GB

Temperature measurement:  Present, uncalibrated typical 2 deg accuracy

All you need to know to build your ADC Asgard is available here.

About Luca Ruggeri