X15 - any expansion boards for GPIO access?

[sfs...@gmail.com]

I purchased an X15 for a project that involves, in part, driving three or four LEDs and detecting some simple button-presses. I've been planning on using the GPIO pins, and of course the X15 has plenty - but they're accessible through a surface-mounted expansion port.

It looks like I'll need a breakout board to provide header pins. I'm not finding anything directly relevant.

Here's what I've found:

* Some posts from 2015 about the need for such a board soon after the X15 was released, but apparently no follow-up.

* A post identifying the connector type for the expansion ports (Hirose FX18-60S-0.8SV15), and some ancillary discussion of breakouts that referenced a PCI-e TI expansion board (AMxxxx?), but the conversation kind of petered out without resolution.

And... that's about it. Anyone have other info? Thank you for your help.

[Jeff Andich]

Hi,

I cannot find the post, but a few months ago, I asked if there was a breakout board planned for the 4 expansion headers on the X15.  I THINK Gerald responded by indicating that he had something already designed, but that he hadn't yet had the chance to release it and get it into the production pipeline.  

I'm sure that if there are any updates to that status, the BeagleBoard folks will update everyone on this forum accordingly.

[Gerald Coley]

I have something, but not tested. Not sure when I can get to it.

 

Gerald

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[kamesh]

Hello Gerald,

Do you have the schematics of the breakout board for accessing GPIO's somewhere in github? I would like to design my own adapter board with matching connectors for my experiments.

Thank you very much for your time.

Best
Naveen

[Gerald Coley]

All you need is a connector that plugs into the connector on the X15 that connects it to whatever connector you like. A schematic would connect the pins together in whatever order you like.

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[Vaddina Kameswar Rao]

Hello Gerald,

Thanks for your mail. I tried to search for that connector, but could
not find it. Hence I am posting it here.

The Beagle board has FX18‐60P‐0.8SV connector. A suitable receptacle
for that is FX18-60S-0.8SV15. To get access to GPIO pins to do some
LED blinking for example, I would need FX18-60S-0.8SV15 to some sort
of a GPIO expansion header. I could not find such a thing. Do you have
any recommendation for that type of a connector?

Thank again,
Naveen

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[Jeff Andich]

https://www.digikey.com/products/en/connectors-interconnects/20?keywords=FX18-60S-0.8SV15+&pkeyword=FX18-60S-0.8SV15+&v=26

I wish the distributors (Digikey, Mouser, etc) of the BB-X15 would list this on the same page as the BB-X15...

[Jeff Andich]

Also, 

I think there are 2-3 variants of the mating hirose connector.  I believe the differences are in the "heights" of the connector variants, so you may need to take that into account as well..

   

On Thursday, April 12, 2018 at 7:56:57 AM UTC-5, Jeff Andich wrote:

We made our own PCBA expansion board using this connector.  It only breaks out only 30/60 of the signals and has a single layer, so high speed signals might be an issue.  Also, the mating hirose connector is reversed 180 degrees with respect to the connector on the BB-X15...

[Jeff Andich]

We made our own PCBA expansion board using this connector.  It only breaks out only 30/60 of the signals and has a single layer, so high speed signals might be an issue.  Also, the mating hirose connector is reversed 180 degrees with respect to the connector on the BB-X15...  The mating connector is keyed, so if you're placing the connector on a PCBA, with fixed connections to the pins on the connector, then be sure to flush this out beforehand.

[Jason Kridner]

Contact me separately (bbb.io/about) if you have a design you’d like to be a standard BeagleBoard.org add-on for X15. No promises or simple process, just trying to get a clear picture of needs and how we can try to get the org to help.

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[stevendu...@gmail.com]

Hi Jeff,

     Is there any chance that you have any of the expansion boards you made for sale? I'd be interested in purchasing at least 4 of them if that's a possibility.

Thank You.

[jeff....@gmail.com]

Hi Steve,

I'm just picking back up Linux on the BB-X15, and was looking for expansion headers.  Saw a couple of designs online (someone had gerber files available for one design, downloadable online).

These were developed by a hardware engineer on our team to support our custom board port.  We really wanted to send this to BB.org after all the help they gave us.  But as noted above, the hirose connector was flipped, so we weren't able to expose the 30 pins we wanted and had to shift the pinmux around to bind peripherals to the available pins..  But still, it was useful.  I don't work there anymore.  At the time, talked to my manager about releasing this to BB.org, and we discussed it was best to submit to the patent attorney to make sure they were cool with us sending it to BB.org. I wrote something up for legal to get their blessing, but they never got back with me, and I didn't follow-up with them myself. I should have.   One of our Linux guru's left before this all happened.  If he had still been around, I'm sure he could have gotten them to take a look at this.   So I apologize for all of this!!