StarSlew is a 3-axis attitude-control digital twin that connects an Arduino Nano and MPU6050 to a quaternion-based GNC software stack and a 3D spacecraft visualization.
Rotate this page on a phone to drive a live attitude model. Switch off fusion and watch a small gyro bias accumulate; switch it back on to compare the corrected estimate.
Runs on this device. Sensor readings stay in your browser. Educational complementary-filter demo; it does not claim to run StarSlew's project estimator.
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ATTITUDE ESTIMATE · QUATERNION VIEW
Challenge
Estimate and visualize spacecraft attitude from low-cost inertial sensors while accounting for sensor drift, limited observability, and simplified vehicle dynamics.
Approach
Convert raw accelerometer and gyroscope readings to SI units, fuse them into an attitude quaternion, compute quaternion guidance error, and evaluate a discrete LQR controller with a rigid-body dynamics model.
Outcome
In a software-only simulation, attitude error decreased from 38.27° to below 1° in 1.32 s. These results are not hardware measurements; yaw drift and an LQR state-scaling discrepancy remain limitations.
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