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-   -   FRC Blog - Behind the Scenes at IRI (http://www.chiefdelphi.com/forums/showthread.php?t=137825)

cgmv123 24-07-2015 14:35
FRC Blog - Behind the Scenes at IRI
 
http://www.usfirst.org/roboticsprogr...-SCENES-AT-IRI

Quote:
Today's blog comes from Kevin O'Connor, FRC Robotics Engineer.

As some of the best 2015 robots gathered in Indianapolis to create some incredible walls of totes and containers at the Indiana Robotics Invitational, I and a few other members of the FRC staff were behind the scenes working to gather information to help prepare for the 2016 season. FRC Kit of Parts Engineer Jonathan Bryant and FRC Team Advocate Jamee Luce were talking to teams to collect feedback about their experience with the Kit of Parts and more. We recognize that the type of team attending IRI is very specific and that even if all 67 teams participated, we’d have barely more than 2% of the 2015 FRC teams represented. These details will be taken into account when evaluating the feedback, and this will certainly not be the only opportunity teams have to provide feedback (see this blog for more info about the FRC Team Advocate and how to provide feedback). However, when you need to take a trip to AndyMark anyway, dropping by the largest offseason event in FIRST to talk to teams makes sense.

I was at IRI to do some testing of a potential new robot radio for 2016. Some of you may have noticed that finding a new-in-box D-Link DAP-1522 Rev. B is pretty much impossible and surmised that we will be using a different radio in 2016, and you are correct. The DAP-1522 Rev B has been discontinued and we will be using a different robot radio in 2016. With the assistance, and blessing, of the IRI Planning Committee and volunteers, we were able to get some valuable match testing of a potential candidate for the new radio. While things went fairly well, and certainly had no negative impact on teams or matches, we did see some things we need to investigate further before making a final decision. Many thanks to the IRI Planning Committee, IRI volunteers (especially FTA Jerry Budd), and the 11 teams who ran the radio for some or all of the event (20, 33, 330, 469, 1024, 1114, 2468, 2614, 2826, 3015, and 5188).

Lastly, I was observing the setup of the webcast and collecting feedback from the individuals who helped run the Indiana FIRST webcasts this season. FIRST worked with Indiana FIRST this season to pilot a web streaming solution that was used to broadcast all Indiana FIRST events, including IRI, and collecting feedback on that experience is important as we evaluate the effectiveness of the pilot. We will be compiling the results of that pilot and evaluating alternatives as we continue to move towards a way to get better access to real-time and archived video of all FRC events.
The radio in the picture appears to be a Open-Mesh OM5P-AN (possibly an OM2P-HS).

connor.worley 24-07-2015 15:02
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by cgmv123 (Post 1491213)
http://www.usfirst.org/roboticsprogr...-SCENES-AT-IRI



The radio in the picture appears to be a Open-Mesh OM5P-AN (possibly an OM2P-HS).
Nice, PoE.

marshall 24-07-2015 15:27
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by connor.worley (Post 1491214)
Nice, PoE.
They have a barrel jack and I'm guessing that is what teams will be using. They do look like nice APs though.

PayneTrain 24-07-2015 15:29
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by marshall (Post 1491215)
They have a barrel jack and I'm guessing that is what teams will be using. They do look like nice APs though.
I've heard it's the same barrel jack we already use, but it takes 12V.

Also a PSA: just because they have shown us what the radio is, don't go out and buy it expecting it to be official, then complain if FIRST takes a different direction.

RyanShoff 24-07-2015 15:57
Re: FRC Blog - Behind the Scenes at IRI
 
We use a lot of these in a mesh network. There are multiple versions. Some have POE, some don't. Even the same model number can have different amounts of memory installed.

Caleb Sykes 24-07-2015 21:10
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by cgmv123 (Post 1491213)
The radio in the picture appears to be a Open-Mesh OM5P-AN (possibly an OM2P-HS).
Also, in case anyone was wondering, the goat in the picture appears to be a Little Rocky the Stuffed Mountain Goat Mini Flopsie by Aurora. :D

Jon K. 24-07-2015 21:13
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Caleb Sykes (Post 1491238)
Also, in case anyone was wondering, the goat in the picture appears to be a Little Rocky the Stuffed Mountain Goat Mini Flopsie by Aurora. :D
Caleb,

Unfortunately you are incorrect. That would be one of the limited edition AndyMark AM-Goat goats. Since they are no longer for sale, I cannot link to one. But, having worked with every single one of those goats, I would recognize them anywhere.

page2067 24-07-2015 21:44
Re: FRC Blog - Behind the Scenes at IRI
 
Great blog post

1 feedback is that current system main point of failure we have seen is at the power input plug to the radio - which 1 reply indicated was the same(?)- this has been successfully mitigated by electrical tape applying sideway pressure for contact even during robot interaction (2014), but a better connector suited for some dynamic loading would be a plus.

Thanks.

Nemo 25-07-2015 07:28
Re: FRC Blog - Behind the Scenes at IRI
 
One of these years, the radio will get smaller, right? I know practically nothing about wireless technology, but one of the things I do know is that you can fit it into a phone or a VexNet key.

DonRotolo 26-07-2015 17:45
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Nemo (Post 1491266)
One of these years, the radio will get smaller, right? I know practically nothing about wireless technology, but one of the things I do know is that you can fit it into a phone or a VexNet key.
One of the limits facing any radio equipment is the physics of antennas: These can be made only so small, after which they become ineffective. There is generally little need for a WiFi AP much smaller than, say, a paperback book, and so we're unlikely to see one on 2.4 or 5 GHz.

Ben Wolsieffer 26-07-2015 17:50
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Nemo (Post 1491266)
One of these years, the radio will get smaller, right? I know practically nothing about wireless technology, but one of the things I do know is that you can fit it into a phone or a VexNet key.
When they were evaluating the new control system, I remember hearing that a USB wifi dongle was tested, but it was not used in the end. I'm assuming it was smaller than the current bridge.

EDIT: This was the thread: http://www.chiefdelphi.com/forums/sh...d.php?t=129140

Jon Stratis 26-07-2015 18:06
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by lopsided98 (Post 1491347)
When they were evaluating the new control system, I remember hearing that a USB wifi dongle was tested, but it was not used in the end. I'm assuming it was smaller than the current bridge.

EDIT: This was the thread: http://www.chiefdelphi.com/forums/sh...d.php?t=129140
Yes, it was smaller, much smaller. There were technical issues with running it on a field with all 6 robots, so it was dropped.

Honestly, we don't really need anything smaller - our robots are certainly big enough that you can find room for our radios!

AdamHeard 26-07-2015 18:16
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Jon Stratis (Post 1491349)
Yes, it was smaller, much smaller. There were technical issues with running it on a field with all 6 robots, so it was dropped.

Honestly, we don't really need anything smaller - our robots are certainly big enough that you can find room for our radios!
My ideal is a pure mechanical robot, zero volume and weight allocated for electronics and wires. ;)

Richard Wallace 26-07-2015 18:23
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by AdamHeard (Post 1491350)
My ideal is a pure mechanical robot, zero volume and weight allocated for electronics and wires. ;)
This REALLY deserves a spotlight!

Mike Marandola 26-07-2015 18:31
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by AdamHeard (Post 1491350)
My ideal is a pure mechanical robot, zero volume and weight allocated for electronics and wires. ;)
Introducing the 2016 game, Automata Ascent! Once on the field, you will have 60 seconds for wind up.

theawesome1730 26-07-2015 18:34
Re: FRC Blog - Behind the Scenes at IRI
 
It would be nice for FIRST to be early adopters of 802.11AD since it utilized a 60GHz frequency. Less interruptions and interference, huge bandwidth (why it's called WiGig) and due to the nature of 60GHz antenna modules vs 2.4GHz antenna modules, the same size package can have far more antennas per module on the order of 32 vs 1. Additionally, there are benefits with efficiency and power consumption. Unfortunately 60GHz reflects rather than penetrates most surfaces so this does affect connection, but from previous network setups at competition, I doubt that would be a huge issue.

Source http://www.networkworld.com/article/...i-picture.html

E Dawg 26-07-2015 20:13
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by AdamHeard (Post 1491350)
My ideal is a pure mechanical robot, zero volume and weight allocated for electronics and wires. ;)
https://www.youtube.com/watch?v=s1i-dnAH9Y4

Here's a little something to get you started.

PayneTrain 26-07-2015 21:45
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Nemo (Post 1491266)
One of these years, the radio will get smaller, right? I know practically nothing about wireless technology, but one of the things I do know is that you can fit it into a phone or a VexNet key.
Pretty sure this radio is a hair smaller though, FWIW.

marshall 09-08-2015 21:55
Re: FRC Blog - Behind the Scenes at IRI
 
I don't know why but it just occurred to me that these new APs have a lesser number of ethernet ports on them. Not necessarily a problem but could facilitate adding a switch for some teams. Just a thought.

Al Skierkiewicz 10-08-2015 07:48
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by theawesome1730 (Post 1491353)
Unfortunately 60GHz reflects rather than penetrates most surfaces so this does affect connection,
This includes plastics too...

The radio shown is very small, about 1/4 the footprint of the current radio. It is available with or without the dual band capability. Currently FRC is using the 5 GHz band for competition. The radios tested at IRI did have a POE marking on the jack although I would expect that feature would not be used if this radio will be used. In watching mounting the radio on the various robots, the current general rules for radio mounting still applies. That is high on the robot, away from surrounding metal objects and local interference devices like open frame motors. It does have a 12 volt input. The antennas are mounted on the sides of the radio so conventional wisdom would be to mount horizontally to maximize coverage and to keep objects away from the sides. Robot rules about keeping the LEDs visible should still apply.

evanperryg 10-08-2015 09:13
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by PayneTrain (Post 1491216)
I've heard it's the same barrel jack we already use, but it takes 12V.

Also a PSA: just because they have shown us what the radio is, don't go out and buy it expecting it to be official, then complain if FIRST takes a different direction.
I would think we'll still be using a barrel jack. There would be minimal benefit to using PoE in FRC, especially considering there's only one or two ethernet cables in the entire robot.

Nemo 10-08-2015 20:20
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Al Skierkiewicz (Post 1492978)
The radio shown is very small, about 1/4 the footprint of the current radio.
I didn't realize how small this was when I first saw the picture with the goat. I am pleased.

MikeE 10-08-2015 21:10
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by AdamHeard (Post 1491350)
My ideal is a pure mechanical robot, zero volume and weight allocated for electronics and wires. ;)
That would be ideal for next season's game: http://tinyurl.com/frc2016

Could we re-schedule IRI for June 20th?

Richard Wallace 11-08-2015 05:56
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by MikeE (Post 1493047)
That would be ideal for next season's game: http://tinyurl.com/frc2016

Could we re-schedule IRI for June 20th?
Take FRC back to the Stone Age? Pity teams who have to queue up and place robots like this on the field. Pity volunteers if these are the field elements.

Replace software development with ritual chanting. Replace auton with waiting for sunrise.

marshall 11-08-2015 07:56
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Richard Wallace (Post 1493068)
Take FRC back to the Stone Age? Pity teams who have to queue up and place robots like this on the field. Pity volunteers if these are the field elements.

Replace software development with ritual chanting. Replace auton with waiting for sunrise.
I think I'm more excited to see stonehenge than I am to watch another round of recycle rush though...

Gdeaver 11-08-2015 08:04
Re: FRC Blog - Behind the Scenes at IRI
 
We are in a revolution of automation and mechatronics. Learn it , embrace it. It is your future.

evanperryg 11-08-2015 10:10
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by marshall (Post 1493071)
I think I'm more excited to see stonehenge than I am to watch another round of recycle rush though...
Introducing the 2016 FRC game, stonehenge strike!

marshall 11-08-2015 10:21
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by evanperryg (Post 1493089)
Introducing the 2016 FRC game, stonehenge strike!
You have 100ms to knock down as many stones as possible and then thousands of years to wait for the score. :yikes:

What was this thread about? Ohh yeah, IRI and the new wireless widgets.

Anyone have experience with putting an ethernet switch on the robot. Is it legal? I recognize that we use more ethernet ports than the average team but just curious.

Joe Ross 11-08-2015 11:16
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by marshall (Post 1493092)
Anyone have experience with putting an ethernet switch on the robot. Is it legal? I recognize that we use more ethernet ports than the average team but just curious.
Per the current rules, the roboRIO must be directly connected to the radio, but I can't find anything that disallows a switch on the robot for other devices. With the VRM, its definitely much easier to get power to a switch then the old control system.

Jon Stratis 11-08-2015 11:27
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by marshall (Post 1493092)
You have 100ms to knock down as many stones as possible and then thousands of years to wait for the score. :yikes:

What was this thread about? Ohh yeah, IRI and the new wireless widgets.

Anyone have experience with putting an ethernet switch on the robot. Is it legal? I recognize that we use more ethernet ports than the average team but just curious.
In the 2015 rules, this would be covered by R48:
Quote:
Ethernet-connected COTS devices or CUSTOM CIRCUITS may connect to any remaining Ethernet port on the DAP-1522 Wireless Bridge but must not transmit or receive UDP packets using ports 1100-1200 with the exception of ports 1130 and 1140.
Note that R47 specifies that the roboRIO be connected directly to the bridge (or through an Ethernet pigtail), and that all applicable power rules be followed (R32 comes to mind)- if it's a powered switch you would probably want to supply it with regulated voltage, and odds are it would want 5V.

marshall 11-08-2015 11:33
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Jon Stratis (Post 1493101)
In the 2015 rules, this would be covered by R48:


Note that R47 specifies that the roboRIO be connected directly to the bridge (or through an Ethernet pigtail), and that all applicable power rules be followed (R32 comes to mind)- if it's a powered switch you would probably want to supply it with regulated voltage, and odds are it would want 5V.
Guess that answers my concerns. The joys of building complex systems. :)

Greg McKaskle 11-08-2015 21:17
Re: FRC Blog - Behind the Scenes at IRI
 
Out of curiosity, how many ports does your team use/need? Answers welcome from all comers.

Greg McKaskle

marshall 11-08-2015 21:26
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Greg McKaskle (Post 1493159)
Out of curiosity, how many ports does your team use/need? Answers welcome from all comers.

Greg McKaskle
Ideally, we'd like a minimum of 3 but 4 would be better. The ports are used as follows:

Port 1 - RoboRIO
Port 2 - Co-Processor (Nvidia Jetson, Raspberry Pi, Etc)
Port 3 - First Laptop (or External Switch, meaning not on the robot, a static feature in our pit)
Port 4 - Second Laptop

Laptops being used are typically for debugging or updating code. The first is typically for the drive code and the second is typically for the co-processor.

****I realize we're in the minority on this before anyone starts throwing <strikethrough>stones</strikethrough>DAP-1522s at me.****

Greg McKaskle 11-08-2015 21:47
Re: FRC Blog - Behind the Scenes at IRI
 
Asking, ..., not judging. Thanks for the info. Anyone typically use more?

Greg McKaskle

Ari423 11-08-2015 22:30
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Greg McKaskle (Post 1493162)
Asking, ..., not judging. Thanks for the info. Anyone typically use more?

Greg McKaskle
One year I believe we used 5 (cRIO, coprocessor, camera 1, camera 2, and laptop for deploying code). This was the year before I joined, however, so take this information with a grain of salt. We haven't used more than 3 since then, and I doubt whether we will ever use more than 4 again.

timytamy 11-08-2015 23:01
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by cgmv123 (Post 1491213)
http://www.usfirst.org/roboticsprogr...-SCENES-AT-IRI



The radio in the picture appears to be a Open-Mesh OM5P-AN (possibly an OM2P-HS).
It looks like these, as access points, don't have an inbuilt DHCP server. Can anyone confirm/deny this? Similarly with mDNS?

Jon Stratis 11-08-2015 23:02
Re: FRC Blog - Behind the Scenes at IRI
 
Having two ports available for laptops is nice - debugging from one while driving from another is often a nice way to split up responsibilities and ensure you have screen room for everything.

Other than that... the roboRio is still pretty new. A lot of teams are still using old Axis camera's that use ethernet, although USB ones are pretty easy to use now (and bonus - you don't have to provide USB cameras with additional power... the barrel jack for the axis camera was always a bit touchy). So one for a camera is enough for most teams, although some teams have used two in some years (I know my team has talked about it a couple of different times, for various reasons, and even did it once).

Given all that, I would personally say 3 is necessary, while 4 would be nice to have. Even if you have an ethernet camera and only 3 ports, you can utilize an off-robot switch to hook up multiple laptops for debugging/tethered driving as necessary in your shop/pit/practice field. Maybe in a couple of years we'll find that ethernet cameras become so extremely rare that we could drop that down to 2 minimum... but we can't get less than 2, as we need to be able to tether in the pits at competition.

orangelight 11-08-2015 23:15
Re: FRC Blog - Behind the Scenes at IRI
 
You can always use the USB on the roborio

Alan Anderson 11-08-2015 23:18
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by timytamy (Post 1493169)
It looks like these, as access points, don't have an inbuilt DHCP server. Can anyone confirm/deny this? Similarly with mDNS?
Nothing can be fully confirmed or denied yet. They'll most likely be set up with customized FRC firmware (based on DD-WRT), and I don't think the final decision on configuration and features has been made.

Ari423 11-08-2015 23:24
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Jon Stratis (Post 1493170)
... but we can't get less than 2, as we need to be able to tether in the pits at competition.
We didn't try it this year because it's new and might have bugs, but I believe it is possible to deploy code, etc through the USB B port on the RoboRIO. Perhaps someone who actually used this functionality can comment on how well it worked or whether it would be feasible to eventually replace the Ethernet teather with a USB cable. If it is, we would then not need the port for the laptop on the radio.

Jon Stratis 11-08-2015 23:29
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Ari423 (Post 1493174)
We didn't try it this year because it's new and might have bugs, but I believe it is possible to deploy code, etc through the USB B port on the RoboRIO. Perhaps someone who actually used this functionality can comment on how well it worked or whether it would be feasible to eventually replace the Ethernet teather with a USB cable. If it is, we would then not need the port for the laptop on the radio.
Yes, it is possible (We've done it)... but keep in mind that running tethered the maximum length for USB is about 5 meters, generally... while you can get 100 meters in an ethernet cable. When trying to test auto routines on the practice field, extra length is always a plus - it's amazing how quickly you run out when the robot makes a turn or two, and I don't want to have to run behind it to keep the laptop in range!

orangemoore 11-08-2015 23:40
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Ari423 (Post 1493174)
We didn't try it this year because it's new and might have bugs, but I believe it is possible to deploy code, etc through the USB B port on the RoboRIO. Perhaps someone who actually used this functionality can comment on how well it worked or whether it would be feasible to eventually replace the Ethernet teather with a USB cable. If it is, we would then not need the port for the laptop on the radio.
At one point at our competition this year we could only deploy to the Roborio Via the USB port. For us it worked just fine. Not that I timed the difference but it seemed to take the same time to deploy code. (We used Labview)

However using a USB cable to connect is only really feasible when the robot is on blocks. If you are testing on the practice field an Ethernet cable is still going to be required if you are moving long distances.

(We figured out the Ethernet issue, it had something to do with the computer but since this happened over 5 months ago I can't remember what it was specifically.)

timytamy 11-08-2015 23:56
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Alan Anderson (Post 1493173)
Nothing can be fully confirmed or denied yet. They'll most likely be set up with customized FRC firmware (based on DD-WRT), and I don't think the final decision on configuration and features has been made.
DD-WRT or something in that vein would be amazing. Anything with a SSH terminal for config would be a god-send.

jlindquist74 10-09-2015 19:12
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Alan Anderson (Post 1493173)
Nothing can be fully confirmed or denied yet. They'll most likely be set up with customized FRC firmware (based on DD-WRT), and I don't think the final decision on configuration and features has been made.
"Most likely"? Has there already been work done (code altered, deployed, and abused, not mere theoretical explorations) on an FRC-specific firmware build?

kyle_hamblett 10-09-2015 19:19
Re: FRC Blog - Behind the Scenes at IRI
 
If they do follow through and change the radio, it looks like we'll be using Velcro for mounting again...

runneals 10-09-2015 23:59
Re: FRC Blog - Behind the Scenes at IRI
 
ANYTHING that doesn't use the 2.8 Ghz Channels would be GREAT! Outreach events with 2.8 Ghz radio could literally injure a group of people if you're not careful. We were at an outreach even on Monday where we took out (ran through) 3 rows of chairs. Thank god that no one was sitting in those like they had been earlier in the day because I could just envision the headlines "Robots gone awry, injures 4" *facepalm*

Even in the FTC, I notice that using 2.8Ghz has issues with interference. One would think that issues would be minuscule since you are able to stream videos and do other stuff over them just fine :P

marshall 11-09-2015 08:41
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by runneals (Post 1495691)
ANYTHING that doesn't use the 2.8 Ghz Channels would be GREAT! Outreach events with 2.8 Ghz radio could literally injure a group of people if you're not careful. We were at an outreach even on Monday where we took out (ran through) 3 rows of chairs. Thank god that no one was sitting in those like they had been earlier in the day because I could just envision the headlines "Robots gone awry, injures 4" *facepalm*

Even in the FTC, I notice that using 2.8Ghz has issues with interference. One would think that issues would be minuscule since you are able to stream videos and do other stuff over them just fine :P
2.4 GHz?

jlindquist74 14-09-2015 14:56
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by kyle_hamblett (Post 1495669)
If they do follow through and change the radio, it looks like we'll be using Velcro for mounting again...
3M's Dual Lock product works well for this, we used four squares at the corners. (This is the same stuff many tolling authorities ship to attach their transponders to windshields.) Regular soft velcro always wears out at the worst times.

cadandcookies 14-09-2015 15:06
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by jlindquist74 (Post 1495983)
3M's Dual Lock product works well for this, we used four squares at the corners. (This is the same stuff many tolling authorities ship to attach their transponders to windshields.) Regular soft velcro always wears out at the worst times.
Dual Lock is a magical and fantastic product. I support this suggestion.

cgmv123 14-09-2015 16:56
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by jlindquist74 (Post 1495983)
(This is the same stuff many tolling authorities ship to attach their transponders to windshields.)
Also used by FLL for attaching mission models to the mat. (Meaning you may already have some.)

EricH 14-09-2015 20:40
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by cadandcookies (Post 1495984)
Dual Lock is a magical and fantastic product. I support this suggestion.
I have to agree on this... caveat, make sure to use enough.

I've been known to use it to solve various "interesting" attachment problems...

jlindquist74 08-10-2015 14:58
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by cgmv123 (Post 1495998)
Also used by FLL for attaching mission models to the mat. (Meaning you may already have some.)
FLL uses the "Low Profile" variety of Dual Lock. I've never seen it in stores, but it's available from Amazon. Very neat stuff I should probably use more often.

jwfoss 08-10-2015 15:03
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by kyle_hamblett (Post 1495669)
If they do follow through and change the radio, it looks like we'll be using Velcro for mounting again...
It looks like the radio is compatible with some pretty nice looking enclosures designed for use for indoors and outdoors.
These might be a nice way of keeping the power and ethernet cables secured.

Al Skierkiewicz 08-10-2015 15:07
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by jlindquist74 (Post 1499179)
FLL uses the "Low Profile" variety of Dual Lock. I've never seen it in stores, but it's available from Amazon. Very neat stuff I should probably use more often.
Look here...
http://www.mcmaster.com/#hook-and-lo...teners/=za4c3t

fovea1959 07-01-2016 12:39
Re: FRC Blog - Behind the Scenes at IRI
 
Back to the Ethernet port count: yeah, having only 2 is gonna be a pain if you have an onboard coprocessor. Finding a small/light Ethernet switch so we can attach roboRio / coprocessor / laptop(s) is gonna be a priority. USBing into the roboRio works in the pits, but not on the practice field!

marshall 07-01-2016 13:42
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by fovea1959 (Post 1517572)
Back to the Ethernet port count: yeah, having only 2 is gonna be a pain if you have an onboard coprocessor. Finding a small/light Ethernet switch so we can attach roboRio / coprocessor / laptop(s) is gonna be a priority. USBing into the roboRio works in the pits, but not on the practice field!
Done: http://www.amazon.com/gp/product/B002HH0W5W

Foster 07-01-2016 14:28
Re: FRC Blog - Behind the Scenes at IRI
 
Why not this 5 port switch that works on 5 volts that is $15 less than the one you posted? Please don't say "it's a gigabit switch".

marshall 07-01-2016 14:29
Re: FRC Blog - Behind the Scenes at IRI
 
Quote:
Originally Posted by Foster (Post 1517634)
Why not this 5 port switch that works on 5 volts that is $15 less than the one you posted? Please don't say "it's a gigabit switch".
Nothing wrong with it either... if you don't need gigabit. ;)

cglrcng 08-01-2016 03:38
Re: FRC Blog - Behind the Scenes at IRI
 
Or a USB to RJ45 Network adapter

http://www.ebay.com/itm/Black-USB-3-...AOSw9r1WBkV z

Or a combo USB hub and network adapter

http://www.ebay.com/itm/3-Ports-USB-...AOSw37tWCkQ k

All are avail in 3.0 & 2.0 and you can isolate the roboRio plug in by using it so there is less chance of USB port damage on the roboRio if you securely mount the hub and remove the locking tang on the network cable so if pulled hard it will simply disconnect from the hub easily. Safety first.

Many cheap 4/5 port small lightweight 10/100-10/1000 switches avail out there though also. Some externally powered, some PoE. (too many to list)

BTW: When tethered laptop to roboRio via USB to drive...Is it the host (USB A type/rectangle) or the device port (USB B type/D shaped) that is used? Can you tell I stayed away from the robot last year?

Foster 08-01-2016 05:52
Re: FRC Blog - Behind the Scenes at IRI
 
I have one of those 3 USB / Ethernet adapters for my RaspPi Zero. Problem I'm facing is drivers to make the Ethernet part work. Wouldn't that be a problem with the RoboRio?


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