Search found 4 matches
- Thu Nov 21, 2019 2:46 pm
- Forum: Developer Discussions
- Topic: Optical Flow signal delay
- Replies: 4
- Views: 2276
Re: Optical Flow signal delay
No I am not using the flow deck, however the data I collected and plotted is the scaled raw output of the sensors before any fusion or processing, the driver I used to interface with the SPI module is the Bitcraze one: https://github.com/bitcraze/Bitcraze_PMW3901 The results should be repeatable usi...
- Wed Nov 20, 2019 3:09 pm
- Forum: Developer Discussions
- Topic: Optical Flow signal delay
- Replies: 4
- Views: 2276
Re: Optical Flow signal delay
Here's an example comparing the gyroscope and velocity sensor: Screen Shot 2019-11-20 at 10.00.40 AM.png I am rotating the board back and forth, I would expect the angular velocity and the velocity read by the sensor to be aligned, but as you can see the velocity sensor is ever so slightly lagging b...
- Tue Nov 19, 2019 10:11 pm
- Forum: Developer Discussions
- Topic: Optical Flow signal delay
- Replies: 4
- Views: 2276
Optical Flow signal delay
Hello, I have been playing around with the PMW3901 optical flow sensor for a little while, and I noticed something I could not find any reference to anywhere else. I was trying to validate the gyroscopic compensation for rotational velocity readings, when I noticed that the gyro signal and the optic...
- Wed Sep 04, 2019 8:08 pm
- Forum: Developer Discussions
- Topic: Flow deck parameter question
- Replies: 0
- Views: 54285
Flow deck parameter question
Hi everyone, I am currently learning about Kalman Filters and studying how data is fused together from multiple sensors to obtain state estimations. I have been studying the flow deck and how the data obtained from it is used in the EKF to obtain an estimation of the drone's velocity. I have read th...