Chief Delphi
Page 4 of 4 < 123 4
Show 100 post(s) from this thread on one page

Chief Delphi (http://www.chiefdelphi.com/forums/index.php)
-   General Forum (http://www.chiefdelphi.com/forums/forumdisplay.php?f=16)
-   -   FRC Blog - Behind the Scenes at IRI (http://www.chiefdelphi.com/forums/showthread.php?t=137825)

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?


All times are GMT -5. The time now is 11:39.
Page 4 of 4 < 123 4
Show 100 post(s) from this thread on one page

Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi