Battlebots

A new forum for battlebots enthusiasts, competitors, and fans.
 
HomeCalendarFAQUsergroupsRegisterLog inBuilders DB
Share | 
 

 Brushless ESC with full speed reverse?

View previous topic View next topic Go down 
AuthorMessage
Shadsez



People Skills: 722
Registration date: 2012-11-14

PostSubject: Brushless ESC with full speed reverse?   Wed Nov 14, 2012 6:06 pm

Hey guys! First poste here. I am excited to join!

My first question is does anyone know of an ESC for a brushless motor that has full speed reverse? So far I can only find portional reverse. How can I get one to go full speed in either direction? Thanks in advance!!


Last edited by Shadsez on Wed Nov 14, 2012 10:15 pm; edited 1 time in total
Back to top Go down
Shadsez



People Skills: 722
Registration date: 2012-11-14

PostSubject: Re: Brushless ESC with full speed reverse?   Wed Nov 14, 2012 10:20 pm

Lol I showed how newb I am. Yes I meant ESC. Truth is I am working on a robot. I need the ability to go full speed in both forward and reverse. It appears the Mambas have the ability (thanks), but I am having a hard time navigating the site.

With our current design we need both 10 and 24 inch pounds of torque and the capacity to run at least 3,000 RPM under full load. My buddy expects that at 12 volt we need roughly 40 amps.

Originally we were going to use industrial stepper motors but are seeing if hobby stuff can shave off some cost (the bot will currently cost about $10k).
Back to top Go down
Koensig



People Skills: 1449
Registration date: 2011-02-25
Age: 20
Location: Terre Haute, Indiana

PostSubject: Re: Brushless ESC with full speed reverse?   Thu Nov 15, 2012 11:08 am

What are you building?

Typically ESCs designed for rock crawlers will have full revers as well as no delay.
http://v2.teamnovak.com/products/index.php?main_page=product_info&cPath=5_143&products_id=46

Back to top Go down
Shadsez



People Skills: 722
Registration date: 2012-11-14

PostSubject: Re: Brushless ESC with full speed reverse?   Thu Nov 15, 2012 11:30 am

It is a mining robot for a university competition. We have to mine as much as we can in an allotted time. With our design we don't want to have to turn around when we go to dump the material. I will look into rock crawlers. Thanks.
Back to top Go down
Shadsez



People Skills: 722
Registration date: 2012-11-14

PostSubject: Re: Brushless ESC with full speed reverse?   Thu Nov 15, 2012 11:31 am

I should also mention that our controller will be sending out PWM signals to control direction and speed. A teammate just mentioned that there are some shields for Arduino boards that act as ESC's. Any experience with these? Good or bad, etc?

Thanks so much guys!
Back to top Go down
rdubard
mega contributor
mega contributor


People Skills: 2496
Registration date: 2009-06-10
Age: 49
Location: Ransom Everglades, Miami, FL

PostSubject: Re: Brushless ESC with full speed reverse?   Sun Nov 18, 2012 7:58 pm

Yeah, I'm pretty sure there's not an Arduino shield for brushless (yet). But the rock crawler ESCs, of which Castle sells, can be a pretty good solution. However, the robot community has not really come up with a good brushless drivetrain (in my opinion). Does it need to be brushless? What are you using for gearboxes? How long does it have to run for? What kind of batteries are you considering? These are all pretty important things to also know when designing a drivetrain. (however, the work you have done seems pretty legit).

The Castel site is a bit wierd, I admit. Tower Hobbies also carries some of their stuff, and if you are designing a robot, a great place to start is Robot Marketplace (not perfect, just a good starting point).

Back to top Go down
 

Brushless ESC with full speed reverse?

View previous topic View next topic Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
Battlebots ::  :: -