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 Need help with our drive system and electronics

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ringgold15




People Skills : 3877
Registration date : 2013-08-30
Age : 26
Location : Ringgold High School

Need help with our drive system and electronics Empty
PostSubject: Need help with our drive system and electronics   Need help with our drive system and electronics I_icon_minitimeFri Aug 30, 2013 9:57 pm

Last year we ran into problems with our drive system.  We bought a Sabertooth dual 60A motor driver and used two RS775 Motors - 12V.  we tested the bot by driving it straight into the wall and going full speed forward then straight into reverse at full speed without any problems.  As soon we hit into another bot, it would completely shut down. Each motor has a stall current of 30 amps and the sabertooth has a max peak of 120 amps per channel so we can not figure out why it would shut down.  does any body have any advice on how to fix this?
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ringgold15




People Skills : 3877
Registration date : 2013-08-30
Age : 26
Location : Ringgold High School

Need help with our drive system and electronics Empty
PostSubject: the rs-775-12v motor actually has a stall current of 30 amps you are thinking of the rs-775-18v   Need help with our drive system and electronics I_icon_minitimeSun Sep 01, 2013 12:27 am

Performance
Model M5-RS775-12
Operating v : 6v - 18v
Nominal v : 12v
No Load RPM : 7300
No Load A : 1.1A
Stall Torque : 61.1 oz-in 431.5 mN-m
Stall Current : 30A
Kt : 2.04 oz-in/A 14.4 mN-m/A
Kv : 608 rpm/V
Efficiency : 76.8%
RPM - Peak Eff : 7300
Torque - Peak Eff : 11.69 oz-in 82.6 mN-m
Current - Peak Eff : 5.7A
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ringgold15




People Skills : 3877
Registration date : 2013-08-30
Age : 26
Location : Ringgold High School

Need help with our drive system and electronics Empty
PostSubject: Re: Need help with our drive system and electronics   Need help with our drive system and electronics I_icon_minitimeSun Sep 01, 2013 12:34 am

we are using a 16:1 gear ratio

a whyachi MS05 DC Power Switch

and we do not have a video of it. it only happens when it hits into another bot.  we have rammed it up against walls and nothing has happened and also basically sat on top of it and tried to make it move and it wont shut down like it does in the arena
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ringgold15




People Skills : 3877
Registration date : 2013-08-30
Age : 26
Location : Ringgold High School

Need help with our drive system and electronics Empty
PostSubject: Re: Need help with our drive system and electronics   Need help with our drive system and electronics I_icon_minitimeSun Sep 01, 2013 11:30 pm

What is a brown out?
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Need help with our drive system and electronics Empty
PostSubject: Re: Need help with our drive system and electronics   Need help with our drive system and electronics I_icon_minitime

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Need help with our drive system and electronics
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