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Unread 18-02-2006, 18:54
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Exclamation PLEASE HELP: OI switch box not working

Hi,

We have a switch box for our OI this year, and whenever one of the switches is pressed, the voltage drops and so changes the analog inputs.

We have the switches going from signal to ground. When nothing is pressed, there are 4.9 volts on the supply, but when we press something it drops to 4.7 volts.

So, we need a resistor (1k) on the switches, and it works fine. However, the buttons on the joystick do not have a resistor and they work fine.

And shoving a piece of wire to connect the pins as the switch would has the same voltage dropping problem.

Thanks so much for any help!
~Stephanie
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Unread 18-02-2006, 19:22
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Re: PLEASE HELP: OI switch box not working

How do you have your switches wired? Specifically, what are the two terminals on your switch connected to?
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Unread 18-02-2006, 19:34
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Re: PLEASE HELP: OI switch box not working

thanks but we just found the problem
one of our joysticks was drawing current for an unknown (as of now) reason. We're switching joysticks.

Thanks
__________________
2004 Founding member and Arm leader, 2005 Lead programmer, 2006 Controls leader, 2007 Project Manager/President
Thanks for making FIRST such a great experience for me. I'm no longer on 1351, and I'm not currently planning to mentor team 97, but FIRST has meant so much in getting me to where I am now, in life and at MIT, class of 2011.
I met Billfred! He recognized me!
SVR 04: 11th seed - Highest Rookie Seed - Semifinalists w/ 1120 and 568 - GM Industrial Design Award
SVR 05: Semifinalists w/ 8 and 766
SVR 06: 6th seed - Quarterfinalists w/ 368 and 1072
Davis 06: 1st seed - Quarterfinalists w/ 649 and 100 - KPCB Entrepreneurship Award
SVR 07: 36th seed
David 07: 4th seed - Semifinalists w/ 1280 and 692 - Johnson and Johnson Sportsmanship Award
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