User`s manual

AscTec Hummingbird with AutoPilot User’s Manual

1.1.4 AscTec 3D-MAG

The AscTec 3D-MAG is a triple-axial compass mo-

dule used to determine the vehicles heading by mea-

suring the Earth’s magnetic ﬁeld. The AscTec Auto-

Pilot mathmatically transforms the measured vector

into the horizontal plane and can thus determine the

correct heading even if the vehicle is tilted in pitch

or roll. The 3D-MAG is a high resolution instrument,

which is required as the Earth’s magnetic ﬁeld is re-

latively week. Please be aware that adding payloads

close to the compass, especially radio modules like a

video transmitter or an antenna could severly interfe-

re with the measurements and reduce GPS hovering

performance. If you are experiencing difﬁculties and

do not ﬁnd a way to solve it please contact us for as-

sistance.

1.1.5 GPS unit

The GPS unit is mounted on top of the X-CSM Core.

Please make sure you do not add any payload which

could comprise a free view of the sky.

1.1.6 Motors

The X-BL-52s motors by HACKER Motors Germany

are custom-built for the AscTec Hummingbird. The

motors are perfectly suited for the application in this

vehicle.

1.1.7 X-BLDC brushless motor

controllers

Every motor is controlled by an independent X-

BLDC brushless motor controller. The controllers are

highly optimized for the X-BL-52s motors and thus

ensure the highest efﬁciency possible. Please note that

for this reason the controllers might not work with a

different motor type.

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