![]() ![]() The InvenSense MPU-9250 chip contains two separate integrated circuits within the same package: The video shows the compass both “with” and “without” tilt compensation.ĭo not use this compass in situations involving safety to life, such as navigation at sea, as violent shaking (rapid movement) can affect the gyro accuracy requiring a system reset.Ī conceptual view of a “tilt compensated compass” is shown in photo 1. The pitch angle is approximately 30 degrees, the roll angle is zero, and the heading is 100 degrees magnetic. The opening photo shows the tilt compensated compass resting on a 30-60 degree set square. ![]() The estimated cost for this project is $20 USD. The tilt stabilization may be disabled by placing a jumper wire between Arduino pins A0 and GND. When stabilised, the tilted compass headings only vary by one or two degrees. ![]() Without tilt compensation the compass headings vary significantly. The heading accuracy is within 2 degrees depending on how well the compass has been calibrated. The LCD simultaneously displays the Heading, (P)itch, and (R)oll. This instructable explains how to make a tilt compensated compass using an Arduino UNO R3, an LCD display, and an IvenSense MPU-9250 multi-chip-module that contains an MPU-6050 accelerometer / gyro and an AK8963 magnetometer within the same package. ![]()
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