A compass is a sensor which detects its orientation with respect to the earth's magnetic field, and displays it or outputs as an electronic signal.

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Digital Compass identifying direction of travel for use with trains

I work in a control center for a train company in the UK. Our trains work in either direction but only one end has first class carriages. Because trains on our network reverse quite a lot it is ...
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2answers
246 views

Would a digital compass work reliably when installed in a car?

I'm working on a project that needs dead reckoning sensors to combine to GPS readings, and is to be installed under the dashboard of a car. Currently I have an accelerometer and a gyroscope for that. ...
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3k views

What are the differences between a gyroscope, accelerometer and magnetometer?

What is the difference between a 3-axis gyroscope, 3-axis accelerometer and 3-axis magnetometer? How do these sensors work? Why are all 3 used in some devices like smartphones, tablets, quadcopters ...
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ZCC DI 232 digital compass interfacing [closed]

Has anyone worked with the digital compass ZCC-D-I-232 ?? I bought one and am stuck up with its calibration! No response whatsoever from the compass. There is no manual for the product. A ...
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1answer
75 views

What is/are the minimum sensor(s) is needed to get inclination/tilt/pitch of project with roll compesation?

I am planning a project that will measure and log the tilt of my push bike while I am riding it. The fastest that I would be recording is every 0.1 seconds, though it will probably be every 1 second. ...
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1answer
137 views

Electronic compass soft iron distortion

I'm making a small autonomous vehicle, it is about 300x300mm in size. I need to get a heading for the robot. I currently have a CMPS03 compass but am finding that it is highly sensitive to soft iron ...
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4answers
1k views

Determine the angle and speed of a rotating platform

I have a 1 axis (x) spinning platform, that is spinning pretty fast ~300 RPM. I want to be able to detect with a good degree of precision how many degrees it has travailed from its starting position ...
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1answer
933 views

Calculating weights in a particle filter experiment using multiple state variables

I am trying to implement a particle filter for coupling gyro and electronic compass for better measuring device orientation. [related question] I understand my state vector would contain the absolute ...
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189 views

Establishing ground truth in a particle filter experiment using compass and gyro

I'm working on coupling gyro and electronic compass for better accuracy of device orientation (using particle filters). I have one basic question, though: how do I establish ground truth in this case? ...