|
|
|
![]() |
|
|||||||
|
||||||||
![]() |
| Thread Tools | Rate Thread | Display Modes |
|
#1
|
|||||
|
|||||
|
Illuminated Switches
I was reading through the IFI Operator Interface Guide just to freshen up and i came across a passage that said "Do Not use illuminated switches". Is this a Rule that we must follow or is this just a recommendation on the part of IFI?
Are the instructions in these manuals the official rules for the controllers and such? Because as far as switches go in the manual it says we can use any switch in any quantity (i think its any quantity)....so can i use illuminated switches? Why would using them be frowned upon by IFI? |
|
#2
|
||||||
|
||||||
|
There is a rule in the rule book that prohibits illuminated switches. I can't get into Hyperrules at the moment or I'd give you the reference (must be that silly firewall they have here at work).
There IS a technical reason for the rule, but you'll have to ask one of the electricals what it is. Hopefully Al S or Rbayer or one of those guys will explain it. This has been a topic of discussion before, but I think it's been a few months or does it just seem that way? I may be suffering the usual "Build Season Time Distortion Syndrome". |
|
#3
|
|||||
|
|||||
|
well if any other teams want to find out the reason i found an old thread that tells why
http://www.chiefdelphi.com/forums/sh...ted +switches Thanks everyone. |
|
#4
|
||||
|
||||
|
Quote:
Code:
'Code exerpt from the 2003 default code, 2.0 and 2.5 versions. Output 7 'define Basic Run LED on RC => out7 Output 8 'define Robot Feedback LED => out8 => PWM1 Green Output 9 'define Robot Feedback LED => out9 => PWM1 Red Output 10 'define Robot Feedback LED => out10 => PWM2 Green Output 11 'define Robot Feedback LED => out11 => PWM2 Red Output 12 'define Robot Feedback LED => out12 => Relay1 Red Output 13 'define Robot Feedback LED => out13 => Relay1 Green Output 14 'define Robot Feedback LED => out14 => Relay2 Red Output 15 'define Robot Feedback LED => out15 => Relay2 Green Code:
out9 = p1_sw_trig As a side note, during the WRRF's Programming Workshop, before Kickoff, one of the tasks for people to complete was to make a rate display for a PWM output, both forwards, using the green LEDs, and backwards, using the red LEDs. It was very fun to just watch what people were able to do with these LEDs, seeing as how I was staffing the event (with Ken Krieger (formerly of 192, currently of WRRF) in the lead, and Mark Whitehouse (formerly of 232 and 814) as a fellow assistant. Fun stuff. |
|
#5
|
|||||
|
|||||
|
The main reason is any illuminated switch is expected to be driven by a lamp output on the OI. Those outputs are only able to sink 10 ma (milli amps) which is fine for LEDs but way low for lamps. Additionally, any operator box would receive power through the OI and by making this rule, it will keep teams from blowing fuses or killing the OI. As of yet, FIRST is not allowing separate power for the operator interface. I concur that with all the variables that would result in failures, this is a good general rule for all teams.
See Robot Control System p. 12 @ http://www.innovationfirst.com/FIRST...ence_Guide.pdf Last edited by Al Skierkiewicz : 30-01-2003 at 14:00. |
![]() |
| Thread Tools | |
| Display Modes | Rate This Thread |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Limit switches | Team168 | Programming | 8 | 10-02-2003 16:22 |
| switches in order | PBoss | Programming | 5 | 26-01-2003 22:02 |
| Team selector switches on ISAAC | Lloyd Burns | Robotics Education and Curriculum | 0 | 17-12-2002 08:32 |
| I need help with the reed switches!!!!!!! | archiver | 2001 | 2 | 24-06-2002 00:40 |
| Need help with custom switches | archiver | 2001 | 3 | 24-06-2002 00:35 |