Q - What angular rate and acceleration output ranges are available?
A - Rate ranges are ±300°, ±150°, ±75°, ±45° and ±22.5°/sec and ±1 or ±2g acceleration (set at factory).

Q - Can I change rate and acceleration gains?
A - Yes, however the user would need to replace 12 resistors, documented in user manual.

Q - What output can I expect from the analog IMU's?.
A - Analog IMU's provide buffered signals 0-5V (nom.) with centers at 2.5V (nom). Details are available in the user manuals.

Q - What is the data format of the digital IMU?.
A - Two output formats are available. An NMEA like ASCII string with seven fields, representing X, Y and Z angular rate; X, Y and Z acceleration and temperature all in 10 bit resolution (0-1023). A 14 byte binary format is also available, both formats are user selectable. Additional details available in the user manual.

Q - Why do I need the anti-aliasing filters provided on the Gyrocube 3F?
A - The Gyrocube 3F is configured such that the sensor outputs bandwidth are beyond 100Hz with the anti-aliasing filters set for standard corner frequency of 37Hz. This assures flat response in the passband with a sharp roll-off and a -53dB stopband attenuation. Customers can order corner frequencies down to 1Hz. This can be particularly useful in attenuating unwanted mechanical effects in vehicles

Q - How much does an IMU weigh?
A - The Gyrocube 3A weighs 20grams.

Q - Are there special concerns for the IMU power source?
A - As with all analog circuits, care should be exercised to minimize the introduction of electrical noise into any desired signal. Some common power supply practices are outlined in the user manuals.

Q - What does 'integrated autopilot' mean?
A - We consider an integrated autopilot a complete solution to stabilize, control and navigate an autonomous vehicle. Our integrated autopilots are complete with static and dynamic pressure sensors, GPS receiver and triaxial IMU.

Q - Is an autopilot only useable on aircraft?
A - No, we have successfully tested these autopilots on autonomous aircraft, boat and car platforms. See our gallery.

Q - What else do I need to fly an aircraft with the PhoenixAX?
A - At minimum you need a vehicle, an appropriately sized battery, pitot-static plumbing, servos for the control surfaces on your airframe and a PhoenixAX autopilot. You can add optional sensors, such as sonar altimeter, magnetometer compass or telemetry link.

Q - Is software included with the PhoenixAX?.
A - Not currently. An optional software package will shortly be available. The PhoenixAX is a hardware platform for developing autopilot software. O-Navi supports the Autopilot Open Source Initiative to aid software developers and advance the state of the art of autopilot and autonomous vehicle control systems.

Q - Can I connect the VCC directly to a unregulated power source.
A - Yes, the PhoenixAX can be powered by 10-24V unregulated. It is highly recommended that users add noise filters to prevent RF and noise from other systems aboard your vehicle from interfering with the autopilot.

If you have a question not addressed here, please feel free to contact us.

For more information go to our SUPPORT page.