What more information on RIO

6 years 7 months ago #29528650 by roboteq
Replied by roboteq on topic What more information on RIO
The AHRS outputs Roll Pitch and Yaw data using either euler or quaternion angles. Values are ouput in degrees X 1000. So you must take the values and divide by 1000 to get degrees with 3 decimals.

The output is common all such devices. If you are unsure of what is what in the output string, position the board in certain way, look at the 3d cube to read the pitch roll and yaw angles. Then switch to the setup tab and look at the raw data in the console.

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6 years 7 months ago #29528651 by talgball
I do appreciate the information, and knowing the 1000x degress thing is very helpful.

However, each of the devices of this type (MEMS sensors) I've used have had different formula for converting the raw data to standard values, depending on the sensor and the scale and various option settings. For example, gyroscopes often have a max value that converts to degrees per second and is adjustable to give different sensitivity levels as a result of different max speed settings. I agree that I a lot can be learned by looking at the data and playing with the device. But we are designing a serious product and actually considering the RIO board as part of our design. An ETA on a more complete documentation set or acknowledgement that there is no plan for such or some statement about it being for educational purposes only, if that is case, would be helpful. Meanwhile, I have been assuming that the RIO is a 'real' Roboteq product at this point, just like your excellent motor controllers.

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6 years 7 months ago #29528652 by talgball
Is it possible for you to post the source code associated with the example in the video that shows how to use the Ping sensor? Any example that shows how to use the PWM capture capability from the library on the Pi would be great, and that one must certainly exist as shown in the video.

Thanks!

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6 years 7 months ago #29528659 by roboteq
Replied by roboteq on topic What more information on RIO
The product documentation is for the time beign the 15-page datasheet/user manual. It contains all the data that would be needed for its operation but given that this is a new document, it may have omissions.

The range for the accelerometer and gyroscope are missing from the documents and will be added. If there are other important data missing, please let us know.


The Gyroscope and Accelerometer are in the Invensense MPU6050. You may refer to the chip's datasheet for more information on range and units.

The MPU6050 Gyroscope has a programmable range. We have set it to 2000 degrees per second and it cannot be changed.

Information and reference about Microbasic can be found online at dev.roboteq.com/dev1/index.php/technolog...icrobasic-technology or in the roboteq motor control manual.

Regarding firmware features on RIO and future support, the current release provides most of the functionality we believe is needed in the product. Additional functionality (e.g. logic performed on IO, filtering, debouncing, toggling, ...) can be simply added with small scripts.

Additions to the firmware will be made based on user demand. Feel free to make your requests here or by email.

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6 years 7 months ago #29528662 by talgball
Thank you very much for the information! I've integrated the MPU6050 in a previous design.

Will continue working on the plan for the RIO, but I do like the product.

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