POST No. 2407971
Robotis OP 2 Accelerometer Readings - Somewhat Urgent
2020-11-11 15:30:44 bbode890

Hey all,
I'm doing a thesis where I basically try to make my own stability system using the IMU and FSRs. I am reading the accelerometer values okay however when I move the robot backwards for example, the AX accelerometeter value changes as expected. However, the value stays to that amount, which doesn't make sense as an acceleration. This does not effect my ability to use the device or make a system, however I want to be clear on what I write about my project. What is this value supposed to represent? It should return back to 512 once movement has stopped but does not. If I were to read the data using the getting started information, apparently the Darwin is experiencing a constant acceleration.

Perhaps my understanding is wrong, but I have asked a couple of people and want to be clear. If anyone could help it would be a godsend.

Thank you so much in advance, Brendan.

2020-11-11 15:30:44
2020-11-11 15:33:33 Brendan

This is a log of the acceleration when the Darwin is pushed back. The AY moves to a higher value and stays around that much when movement is stopped. If I understand correctly the AY value should return to 512 when acceleration stops. Perhaps my understanding of physics is wrong...
2020-11-11 15:33:33
2020-11-16 18:41:39 Will Son


I'm sorry about the late reply.

The accelerometer provides a direction of gravity while the gyroscope provides angular velocity.

Therefore, gyroscope value will return to its median point when stationary, while accelerometer values are unchanged.

Thank you.

2020-11-16 18:41:39
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