ANNOUNCING: navX MXP Robotics Navigation Sensor

[slibert]

Originally Posted by sanddrag

Is it expected that more than 100 will be available? If you run out of stock, what's your lead time to get more up for sale?

Lead time is 5 weeks. We will be deciding soon when to send out the next order, based on initial sales velocity.

[Dunngeon]

Originally Posted by slibert

Lead time is 5 weeks. We will be deciding soon when to send out the next order, based on initial sales velocity.

Looks like you had that initial sales velocity. To those on CD, what is a good alternative to this IMU? If any.

[slibert]

Originally Posted by Dunngeon

Looks like you had that initial sales velocity. To those on CD, what is a good alternative to this IMU? If any.

Here's the link to the navX MXP on Andymark's website. They'll have 100 units in about a week. We are recommending people click on the "Email when available" link to be notified when they can be purchased.

http://www.andymark.com/product-p/am-3060.htm

[Dunngeon]

Originally Posted by slibert

Here's the link to the navX MXP on Andymark's website. They'll have 100 units in about a week. We are recommending people click on the "Email when available" link to be notified when they can be purchased.

http://www.andymark.com/product-p/am-3060.htm

Oh, so they haven't sold yet. Thanks for the info!

[cjl2625]

I'm trying to get the navX set up for some basic tests.
I plugged it into the roborio, then opened up the roborio example labview project.
I replaced the ip to roboRIO-2067.local and deployed the code (which succeeds), but I can't get any readings out of it..
It just throws a bunch of errors, starting with the serial block.

Am I doing something wrong here?

[Joe Ross]

Originally Posted by cjl2625

I plugged it into the roborio, then opened up the roborio example labview project.

Are you using the Nav6 project? If so, you need to add the serial port parameter to the serial open to use the MXP serial port, as it defaults to the onboard RS232 serial port. I believe there's a better library coming soon.

[slibert]

Originally Posted by Joe Ross

Are you using the Nav6 project? If so, you need to add the serial port parameter to the serial open to use the MXP serial port, as it defaults to the onboard RS232 serial port. I believe there's a better library coming soon.

As an example of what Joe's referring to, please see the attached image.

[slibert]

A good LabView library just got better.

Last year, the original LabView nav6 Serial Port-based libraries were created for the FIRST community by Joe Ross from Team 330 (Beachbots). Now, thanks to the efforts of James Parks from Team 900 (Zebracorns), these libraries have been enhanced to add SPI support and expose some navX MXP and RoboRio-specific features. Following the open-source tradition, these enhancements have generously been made available for all to use. The latest build of this LabView library, which now supports both Serial and SPI interfaces, is now available at https://code.google.com/p/navx.

The SPI Library features lower-latency communication and also lower RoboRio CPU bandwidth utilization. At the default update rate (60Hz), the Serial libraries were measured at 17% CPU utilization, whereas the SPI library was measured at 11% CPU utilization.

Note that the navX MXP also supports I2C communication, and an I2C version of the LabView library is planned; we'll send out an update on this thread when this work is completed.

Thanks to the ChiefDelphi community for continuing to support this open-source project.

[pschu5]

I missed the restock on AndyMark last night, I thought they were going to restock on Friday but I guess they must have got them earlier. Any word on when they will restock?

[slibert]

Originally Posted by pschu5

I missed the restock on AndyMark last night, I thought they were going to restock on Friday but I guess they must have got them earlier. Any word on when they will restock?

AndyMark has indicated that all of their units sold out yesterday, which is the same day they became available. More units are being manufactured, and are expected to arrive at AndyMark in early February.

There still are some remaining nav6 units on sale at www.kauailabs.com/store. While I realize this isn't an ideal situation, the navx MXP is backwards compatible with the nav6 serial protocols, so should you choose to use the nav6 now, an eventual upgrade to the navX MXP should be pretty straightforward.

[Thad House]

So for the NavX, would it be a problem to both hook up to the USB port, and hook up to the MXP port?. Where would the processor draw power from, and would this cause any issues with anything else?

[rich2202]

I convinced my team to get one to play with (when they are back in stock), but now we have a need for more DIO ports, so ...

All I can find on the navX is the data sheet. Is there a pin-out diagram? The ports are labeled well. I'm sure there is a standard, but I like to know for sure, which pin is for power (usually the middle), signal, and ground.

[slibert]

Originally Posted by rich2202

I convinced my team to get one to play with (when they are back in stock), but now we have a need for more DIO ports, so ...

All I can find on the navX is the data sheet. Is there a pin-out diagram? The ports are labeled well. I'm sure there is a standard, but I like to know for sure, which pin is for power (usually the middle), signal, and ground.

Checkout the newly-added diagram on the navX MXP IO Expansion Wiki Page. This adds an image to clarify the orientation of the ground, power and signal pins for the digital and analog I/O pins.

[Thad House]

Originally Posted by slibert

Checkout the newly-added diagram on the navX MXP IO Expansion Wiki Page. This adds an image to clarify the orientation of the ground, power and signal pins for the digital and analog I/O pins.

Can I request one more thing be added to that. Would you guys add a pinout for which IO goes to which port on the MXP connector. We noticed PWMs were 0-9, but DIOs were not that. like the 8th slot was DIO 12, and the 9th slot was DIO 13. We were able to look through the schematic and figure this out, but it would be nice if you guys had an easy was to figure that out on your website.

[slibert]

Originally Posted by Thad House

Can I request one more thing be added to that. Would you guys add a pinout for which IO goes to which port on the MXP connector. We noticed PWMs were 0-9, but DIOs were not that. like the 8th slot was DIO 12, and the 9th slot was DIO 13. We were able to look through the schematic and figure this out, but it would be nice if you guys had an easy was to figure that out on your website.

Good point; the navX MXP IO Expansion Wiki Page has been updated to include the addressing of all the I/O pins.