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-   -   Van De Graff effect on shooter (http://www.chiefdelphi.com/forums/showthread.php?t=44283)

Wayne Doenges 24-02-2006 01:43
Re: Van De Graff effect on shooter
 
Would dragging a chain on the carpet do any good? All the teams have rubber wheels or tracks. That generates static too :ahh: Like walking across carpeting and touching a doorknob. Some of the regionals will be held in the north where humidity is low during the winter, there will be allot of static.
I wonder what it will be like when two robots touch :yikes:

Eldarion 25-02-2006 17:25
Re: Van De Graff effect on shooter
 
Quote:
Originally Posted by Wayne Doenges
I wonder what it will be like when two robots touch :yikes:
*ZAP!* Oh, shoot, my RC went out and all my electronics are blown! :D

phrontist 26-02-2006 10:09
Re: Van De Graff effect on shooter
 
Our robot actually generates terrifying/amusing arcs between the front roller and chassis after we shoot a few balls.

Tim566 26-02-2006 11:07
Re: Van De Graff effect on shooter
 
I have never visibly seen it but I have felt the small shock I hope the robots don't become like tasers on wheels or something... *shudders* (at zapping possibilities) It might be cool if no damage results from it though...

orelinde 26-02-2006 11:34
Re: Van De Graff effect on shooter
 
so drag chains would possibly work? ok umm wire is lighter i think would wire work dragging on the carpet? so stick the wire to the grounding bolt then down to the ground? am i right here?

Tim566 26-02-2006 11:37
Re: Van De Graff effect on shooter
 
Quote:
Originally Posted by orelinde
so drag chains would possibly work? ok umm wire is lighter i think would wire work dragging on the carpet? so stick the wire to the grounding bolt then down to the ground? am i right here?
I am fairly certain wire would work if you weighted it with a nut or something.

Mike Norton 26-02-2006 13:26
Re: Van De Graff effect on shooter
 
if you drag anything on that rug you will get even more of a zap. you need it to be "grounded" and you will not get that on the field. unless you run up and touch the rail system to get rid of the energy.

Cuog 27-02-2006 19:15
Re: Van De Graff effect on shooter
 
Quote:
Originally Posted by Mike Norton
if you drag anything on that rug you will get even more of a zap. you need it to be "grounded" and you will not get that on the field. unless you run up and touch the rail system to get rid of the energy.
I dont know how it will be at actual competition but at the DC scrimage there were massive amounts of static built up on the railing for the OI stations, i have decided that if i get roped into driving im going to were my antistatic wrist strap to keep from getting shocked too much, but for grounding just connect yourself to as many different things as possible so that the relative charge of the area is 000000.0000

Daniel Morse 27-02-2006 19:21
Re: Van De Graff effect on shooter
 
Quote:
Originally Posted by Not2B
This is part question, part help...

Has anyone else experienced any EMC issues with their shooter wheels? We spent alot of time calibrating our shooter / camera combo today, and we were running the shooter alot.

We had shot several hundred shots, when the radio starting cutting out.

After the electrical team spent time figuring out what was up, and working on the EMC type issues, we had our answer.

We've made a 120 lbs, mobile Van De Graff generator. Foam balls, foam rollers, plastic wheels, PVC frame, and high RPMs... And once we came up with this theory, everyone started remembering... "Hey, that's why the robot shocked me!" and "Oh yeah... that explains the shocks."

Anyway... anyone else experience this???
Team 213 did experience this, in our collector, which is a large belt that is stretched across 2 PVC rollers, and has few pieces of aluminum that are inside the belting, reaching across the belt and contacting for about 18 inches. We first discovered it when we tested it by hand, cranking the belt manually, and the designer got shocked. I think we managed to eliminate most of the charge buildup by taking most of the supports away, but it remains a running joke for our team.

Wayne Doenges 08-03-2006 23:07
Re: Van De Graff effect on shooter
 
In the past four regionals did anyone have a problem with too much static? I mean with the robot not the other teams :D

artdutra04 09-03-2006 00:30
Re: Van De Graff effect on shooter
 
Actually, our FVC robot builds up immense amounts of static - more so than our FRC robot does. Maybe it's the driving across a foam-padded floor, with rubber tires, and intake rollers made of plastic that pick up rubber raquetballs... :yikes: I guess they'll have to carry around one of these now...

Wayne Doenges 09-03-2006 03:13
Re: Van De Graff effect on shooter
 
Quote:
I guess they'll have to carry around one of these now...
Yes, but where would you attach the grounding end? I know, a FRESHMAN :D


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